Math Homework Answers - Recent questions and answers in Algebra 1 Answers
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Powered by Question2AnswerAnswered: How to find y-intercept with 5x=1?
https://www.mathhomeworkanswers.org/243508/how-to-find-y-intercept-with-5x-1?show=243526#a243526
<p><span style="text-decoration: underline;">How to find y-intercept with 5x=1? </span></p>
<p>Well, you can't use the above to find a y-intercept.</p>
<p>The above is the equation of a straight line, 5x = 1, or <span style="text-decoration: underline;">x = 1/5</span>.</p>
<p>In other wirds, the line x = 1/5 is a vertical line, cutting the x-axis at the point (x=1/5, y=0).</p>
<p>Since this is a vertical line, at x = 1/5, then it never cuts the y axis, <span style="text-decoration: underline;"><strong>There is no y-intercept.</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243508/how-to-find-y-intercept-with-5x-1?show=243526#a243526Tue, 27 Jun 2017 07:22:18 +0000Answered: how do I write a math problem for my chart, that only gives the years and the amount of babies born for each year from 2006-2015 when each year is larger or smaller but never equal?
https://www.mathhomeworkanswers.org/243456/problem-chart-years-amount-babies-larger-smaller-never-equal?show=243499#a243499
<p style="text-align:justify">First, plot the data:</p>
<p style="text-align:justify"><img alt="" src="https://www.mathhomeworkanswers.org/?qa=blob&qa_blobid=6251963080657715173" style="height:284px; width:500px"></p>
<p style="text-align:justify">Then we manually fit a straight line through the points (black dots) --- line of best fit --- so that there are about as many points above the line as below it. This is shown as a red dotted line. Using that line we can add three points corresponding to the next three years so that they lie on the line. This gives us predicted data (red dots) for 2016, 2017, 2018. From this we can make a rough prediction by reading off the values from the vertical axis: 2016-500, 2017-523, 2018-545. Only when the figures become available can we see how accurate the prediction is. There are other ways of approaching this problem, for example, by calculating the equation of the line that gives us the minimum sum of perpendicular distances between the given points and the line. This is a tedious process and may only give us predictions that are close to those obtained using the manual method. Another approach is to fit a curve to the points, which is more difficult, and again there is no guarantee of better accuracy in the predictions.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243456/problem-chart-years-amount-babies-larger-smaller-never-equal?show=243499#a243499Mon, 26 Jun 2017 20:01:38 +0000Answered: explain why 19 -x is not a correct translation of "19 less thana number."
https://www.mathhomeworkanswers.org/243455/explain-why-not-correct-translation-of-19-less-thana-number?show=243479#a243479
<p style="text-align: justify;">The operands are the wrong way round: it should be x-19, which means 19 less than a number x. 19-x means a number less than 19.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243455/explain-why-not-correct-translation-of-19-less-thana-number?show=243479#a243479Mon, 26 Jun 2017 12:04:57 +0000Answered: A is twice as good a workman as B andtogether they finish a piece of work in 18 days. In how many days will A alonefinish the work?
https://www.mathhomeworkanswers.org/243373/twice-workman-andtogether-finish-piece-days-will-alonefinish?show=243380#a243380
<p style="text-align:justify">Workman B counts as half of workman A, so the job is completed in 18 days by 1½ workmen. It will take one workman longer to do the work by himself, so workman A would take 18*1½=27 days.</p>
<p style="text-align:justify">If you find this problem difficult imagine this:</p>
<p style="text-align:justify">The two workmen are given the job of reshelving a warehouse that's divided into 3 sections. Between them, they decide that A will cover two sections while B covers the remaining section, because he's slower than A. It will take them 18 days each to do their work. Now workman B goes sick so A has to do all the work. He completes his two sections in 18 days, but he has one more section to go. It will only take him 9 days to complete it because he works twice as fast as B. So the total number of days is 18+9=27 days. (If workman A had gone sick it would have taken B 54 days, because each section would have taken 18 days to complete; and 54=2*27.)</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243373/twice-workman-andtogether-finish-piece-days-will-alonefinish?show=243380#a243380Fri, 23 Jun 2017 13:22:11 +0000Answered: Prove that Principle for equality of fraction?
https://www.mathhomeworkanswers.org/243331/prove-that-principle-for-equality-of-fraction?show=243355#a243355
Multiply both sides by b: ab/b=bc/d, so a=bc/d; multiply both sides by d: ad=bcd/d=bc QED.Algebra 1 Answershttps://www.mathhomeworkanswers.org/243331/prove-that-principle-for-equality-of-fraction?show=243355#a243355Thu, 22 Jun 2017 23:28:16 +0000Answered: For what values of m does the equation has reciprocal roots.
https://www.mathhomeworkanswers.org/243334/for-what-values-of-m-does-the-equation-has-reciprocal-roots?show=243343#a243343
<p><em>For what values of m will the equation x²-2mx+7m-12=0 has reciprocal roots?</em></p>
<p>Let there be reciprocal roots x1 = a and x2 = 1/a, where these two roots are reciprocal to each other.</p>
<p>Taking these roots as the solutions to a quadratic equation alows us to recreate the quadratic as,</p>
<p>(x - a)(x - 1/a) = 0</p>
<p>Multiplying out gives us,</p>
<p>x^2 - (a + 1/a)x + 1 = 0</p>
<p>Comparing this quadratic with the original x²-2mx+7m-12 = 0, and comparing the coefficient of x and the constant term,</p>
<p>-(a + 1/a) = -2m</p>
<p>1 = 7m - 12 ---> m<span style="text-decoration: underline;"> = 13/7</span></p>
<p><span style="text-decoration: underline;"><strong>The equation has reciprocal roots for m = 13/7</strong></span></p>
<p>Then,</p>
<p>(a + 1/a) = 26/7</p>
<p>7a^2 + 7 = 26a</p>
<p> 7a^2 - 26a + 7 = 0</p>
<p>Solution here gives the reciprocal roots as <span style="text-decoration: underline;">a1 = 13/7 + (2/7)sqrt(30)</span> and <span style="text-decoration: underline;">a2 = 13/7 - (2/7)sqrt(30)</span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243334/for-what-values-of-m-does-the-equation-has-reciprocal-roots?show=243343#a243343Thu, 22 Jun 2017 16:27:38 +0000Answered: if x=2-√3 find x^4 - 3x^3+ 7x^2 +6x - 10
https://www.mathhomeworkanswers.org/243305/if-x-2-%E2%88%9A3-find-x-4-3x-3-7x-2-6x-10?show=243319#a243319
If x=2-√3, x^2=4+3-4√3=7-√3 and x^4=49+3-14√3=52-14√3=2(26-7√3).<br />
<br />
x^3=x * x^2=(2-√3)(7-√3)=14-9√3+3=17-9√3.<br />
<br />
The expression is: 52-14√3-3(17-9√3)+7(7-√3)+6(2-√3)-10=<br />
<br />
52-51+49+12-10+√3(-14+27-7-6)=52.Algebra 1 Answershttps://www.mathhomeworkanswers.org/243305/if-x-2-%E2%88%9A3-find-x-4-3x-3-7x-2-6x-10?show=243319#a243319Thu, 22 Jun 2017 09:50:49 +0000Answered: Question about Proof of Real Number..?
https://www.mathhomeworkanswers.org/243294/question-about-proof-of-real-number?show=243298#a243298
<p style="text-align: justify;">Let c be a real number, then the associative rule says that (a*b)*c=a*(b*c); the commutative rule says that a*b=b*a, a*c=c*a and b*c=c*b. a*c=a*-1=c*a=-1*a=-a and b*c=c*b=-1*b=-b, when c=-1.</p>
<p style="text-align: justify;">(-a)(b)=(ca)b=(ac)b=a(cb)=a(-b).</p>
<p style="text-align: justify;">Let x=c*c=c^2=(-1)^2=1. (ca)(cb)=(ac)(cb)=a(c*c)b by the associative rule=a(x)b=(xa)b=x(ab)=1(ab)=ab.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243294/question-about-proof-of-real-number?show=243298#a243298Wed, 21 Jun 2017 20:26:49 +0000Answered: if a = 0 ; b = 0 ; then prove it a\b =2
https://www.mathhomeworkanswers.org/243292/if-a-0-b-0-then-prove-it-a-b-2?show=243296#a243296
<p style="text-align: justify;">Let a=2b then a/b=2b/b=2. If a=2b=0 then a/b still equals 2 even though both a and b are zero and 0/0 would otherwise be undefined.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243292/if-a-0-b-0-then-prove-it-a-b-2?show=243296#a243296Wed, 21 Jun 2017 19:36:05 +0000Which expression is equivalent to mc018-1.jpg? Assume x mc018-2.jpg 0 and y > 0.
https://www.mathhomeworkanswers.org/243289/which-expression-equivalent-mc018-jpg-assume-mc018-jpg-and
jimmy johns subsAlgebra 1 Answershttps://www.mathhomeworkanswers.org/243289/which-expression-equivalent-mc018-jpg-assume-mc018-jpg-andWed, 21 Jun 2017 15:34:11 +0000convert 2.712
https://www.mathhomeworkanswers.org/243210/convert-2-712
i dont get the real answerAlgebra 1 Answershttps://www.mathhomeworkanswers.org/243210/convert-2-712Tue, 20 Jun 2017 15:55:33 +0000Answered: x^2 + (mx+c)^2 = a^2
https://www.mathhomeworkanswers.org/243044/x-2-mx-c-2-a-2?show=243060#a243060
<p>I assume this needs to be solved for x?</p>
<p>x^2+m^2x^2+2mcx+c^2=a^2.</p>
<p style="text-align:justify">x^2(1+m^2)+2mcx+c^2=a^2.</p>
<p style="text-align:justify">x^2+(2mc/(1+m^2))x+c^2/(1+m^2)=a^2/(1+m^2).</p>
<p>Complete the square:</p>
<p style="text-align:justify">x^2+(2mc/(1+m^2))x+(mc/(1+m^2))^2+c^2/(1+m^2)=</p>
<p style="text-align:justify">a^2/(1+m^2)+(mc/(1+m^2))^2.</p>
<p style="text-align:justify">(x+(mc/(1+m^2))^2=a^2/(1+m^2)+(mc/(1+m^2))^2-c^2/(1+m^2)=</p>
<p style="text-align:justify">(a^2-c^2)/(1+m^2)+(mc/(1+m^2))^2.</p>
<p style="text-align:justify">Take square roots of each side:</p>
<p style="text-align:justify">x+(mc/(1+m^2)=±√(a^2-c^2)(1+m^2)+(mc/(1+m^2))^2)/(1+m^2).</p>
<p style="text-align:justify">So x=-(mc/(1+m^2)±√(a^2-c^2)(1+m^2)+(mc)^2)/(1+m^2).</p>
<p style="text-align:justify">x=(-mc±√((mc)^2+(a^2-c^2)(1+m^2))/(1+m^2).</p>
<p style="text-align:justify">The same result is obtained by applying the quadratic formula.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243044/x-2-mx-c-2-a-2?show=243060#a243060Fri, 16 Jun 2017 16:30:52 +0000Answered: (x^3-19x-30)÷(x-5)
https://www.mathhomeworkanswers.org/243010/x-3-19x-30-x-5?show=243012#a243012
<p>x - 5) x^3 - 19x - 30 (x^2 + 5x + 6</p>
<p> <span style="text-decoration: underline;">x^3 - 5x^2</span></p>
<p> 5x^2 - 19x</p>
<p> <span style="text-decoration: underline;">5x^2 - 25x</span></p>
<p> 6x - 30</p>
<p> <span style="text-decoration: underline;">6x - 30</span></p>
<p> ----------</p>
<p><strong><span style="text-decoration: underline;">So, (x^3-19x-30)÷(x-5) = x^2 + 5x + 6 = (x + 2)(x + 3)</span></strong></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/243010/x-3-19x-30-x-5?show=243012#a243012Thu, 15 Jun 2017 16:11:47 +0000Answered: the coefficient of r in the expression 23qrs is:
https://www.mathhomeworkanswers.org/242984/the-coefficient-of-r-in-the-expression-23qrs-is?show=242997#a242997
The coefficient is the constant part of the term, not a variable, so in this case, the coefficient is 23.Algebra 1 Answershttps://www.mathhomeworkanswers.org/242984/the-coefficient-of-r-in-the-expression-23qrs-is?show=242997#a242997Thu, 15 Jun 2017 08:01:39 +0000Answered: Lowest term
https://www.mathhomeworkanswers.org/242806/lowest-term?show=242809#a242809
412230/999990=41223/99999=13741/33333, the most reduced form.Algebra 1 Answershttps://www.mathhomeworkanswers.org/242806/lowest-term?show=242809#a242809Sat, 10 Jun 2017 14:52:13 +0000Answered: (3x + 4) + (4x - 5)
https://www.mathhomeworkanswers.org/242788/3x-4-4x-5?show=242800#a242800
Expand brackets and add like terms: 7x-1Algebra 1 Answershttps://www.mathhomeworkanswers.org/242788/3x-4-4x-5?show=242800#a242800Sat, 10 Jun 2017 12:26:34 +0000Answered: mixture problem
https://www.mathhomeworkanswers.org/242744/mixture-problem?show=242748#a242748
<p><em>A pharmacist wishes to strennghten a mixture that is 10% alchohol to one that is 30% alchohol. How much pure alchohol should be added to 7 liters of the 10% mixture?</em></p>
<p>7 litres of 10% mixture contain <span style="text-decoration: underline;">0.7 litres</span> of alcohol.</p>
<p>Add x litres of pure alcohol to the current 7 litres of 10% mixture.</p>
<p>Volume of new mixture is <span style="text-decoration: underline;">(7 + x) litres</span>.</p>
<p>Amount of alcohol in this new mixture is (0.7 + x) litres.</p>
<p>Concentration of new mixture is (0.7 + x) / (7 + x) = 30% = 0.3</p>
<p>0.7 + x = 0.3(7 + x) = 2.1 + 0.3x</p>
<p>x - 0.3x = 2.1 - 0.7</p>
<p>0.7x = 1.4</p>
<p><span style="text-decoration: underline;">x = 2</span></p>
<p><span style="text-decoration: underline;"><strong>Answer: add 2 litres of pure alcohol to the original mixture</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242744/mixture-problem?show=242748#a242748Fri, 09 Jun 2017 10:34:55 +0000Answered: 2/5n-9=7-3/5n what is n?
https://www.mathhomeworkanswers.org/78878/2-5n-9-7-3-5n-what-is-n?show=242680#a242680
Assume this is (2/5)n-9=7-(3/5)n, n=7+9=16.<br />
<br />
If the question was 2/(5n)-9=7-3/(5n), we have 1/n=16 so n=1/16.Algebra 1 Answershttps://www.mathhomeworkanswers.org/78878/2-5n-9-7-3-5n-what-is-n?show=242680#a242680Wed, 07 Jun 2017 15:22:47 +0000Answered: What goes into 3 and 5 Factoring the GCF
https://www.mathhomeworkanswers.org/242644/what-goes-into-3-and-5-factoring-the-gcf?show=242677#a242677
<p style="text-align:justify">Only 1 goes into 3 and 5, because 3 and 5 are prime numbers. 1 goes into all number. So perhaps the question is: what is the smallest number that 3 and 5 both go into. The answer is 15, but it's called the lowest common multiple (LCM). To find the GCF of two numbers, they must be broken down into their factors first. Then you look at the factors of the numbers to find the largest common factor. So, for example, the GCF of 30 and 50 is 10, because 10 is the largest number that goes into both 30 and 50. 2 and 5 are also common factors, but 10 is the largest.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242644/what-goes-into-3-and-5-factoring-the-gcf?show=242677#a242677Wed, 07 Jun 2017 14:17:13 +0000Answered: 3/7 times 3/7
https://www.mathhomeworkanswers.org/242631/3-7-times-3-7?show=242641#a242641
<p style="text-align: justify;">3/7 * 3/7 = 9/49</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242631/3-7-times-3-7?show=242641#a242641Tue, 06 Jun 2017 21:44:59 +0000Answered: IF x=(ab)▲1/3-(ab)▲-1/3 prove that x▲3+3x=ab-1/ab
https://www.mathhomeworkanswers.org/242484/if-x-ab-%E2%96%B21-3-ab-%E2%96%B2-1-3-prove-that-x%E2%96%B23-3x-ab-1-ab?show=242497#a242497
<p style="text-align: justify;">Let y^3=ab, then x=y-1/y; x^3=y^3-3y^2/y+3y/y^2-1/y^3=y^3-3y+3/y-1/y^3.</p>
<p style="text-align: justify;">3x=3y-3/y; so x^3=y^3-3x-1/y^3 and x^3+3x=y^3-1/y^3=(ab)-1/(ab) QED</p>
<p> </p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242484/if-x-ab-%E2%96%B21-3-ab-%E2%96%B2-1-3-prove-that-x%E2%96%B23-3x-ab-1-ab?show=242497#a242497Sat, 03 Jun 2017 12:16:47 +0000Answered: Y=(x-3)^2-4
https://www.mathhomeworkanswers.org/242428/y-x-3-2-4?show=242476#a242476
<p style="text-align:justify">This equation expresses a relationship between y and x. So the relationship can be shown as a graph, a parabola. It's useful to use a table to plot the graph, so I guess that this is what the question is asking for.</p>
<p style="text-align:justify">Here is a sample table for values of x and y for x between -5 and 5:</p>
<table border="1" cellpadding="1" cellspacing="1" style="width:500px">
<tbody>
<tr>
<td>x</td>
<td>y</td>
</tr>
<tr>
<td>-5</td>
<td>60</td>
</tr>
<tr>
<td>-4</td>
<td>45</td>
</tr>
<tr>
<td>-3</td>
<td>32</td>
</tr>
<tr>
<td>-2</td>
<td>21</td>
</tr>
<tr>
<td>-1</td>
<td>12</td>
</tr>
<tr>
<td>0</td>
<td>5</td>
</tr>
<tr>
<td>1</td>
<td>0</td>
</tr>
<tr>
<td>2</td>
<td>-3</td>
</tr>
<tr>
<td>3</td>
<td>-4</td>
</tr>
<tr>
<td>4</td>
<td>-3</td>
</tr>
<tr>
<td>5</td>
<td>0</td>
</tr>
</tbody>
</table>
<p style="text-align: justify;">Other values can be added as necessary. Note the symmetry: when x=3 y has its lowest value; when x=2 or 4, y=-3; when x=1 or 5, y=0; and so on.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242428/y-x-3-2-4?show=242476#a242476Fri, 02 Jun 2017 19:51:33 +0000Answered: what percent of 897.77 is 84.95?
https://www.mathhomeworkanswers.org/10429/what-percent-of-897-77-is-84-95?show=242463#a242463
How would I know?Algebra 1 Answershttps://www.mathhomeworkanswers.org/10429/what-percent-of-897-77-is-84-95?show=242463#a242463Fri, 02 Jun 2017 12:59:26 +0000Answered: Determine the values of x,y and z for the following system of linear equations.
https://www.mathhomeworkanswers.org/242263/determine-the-values-the-following-system-linear-equations?show=242270#a242270
Call the equations A, B and C.<br />
<br />
B-A=2y+2z=6, y+z=3, so we can substitute z=3-y in A, B, C:<br />
<br />
3x+5y+12-4y=25, 3x+7y+18-6y=31, 11x-2y+24-8y=17;<br />
<br />
3x+y=13, 3x+y=13, 11x-10y=-7. Substitute y=13-3x into 11x-10y=-7:<br />
<br />
11x-130+30x=-7, 41x=123, x=3; y=13-9=4; z=3-4=-1<br />
<br />
SOLUTION: x=3, y=4, z=-1.Algebra 1 Answershttps://www.mathhomeworkanswers.org/242263/determine-the-values-the-following-system-linear-equations?show=242270#a242270Mon, 29 May 2017 18:06:07 +0000Answered: what is the average of the first 50 positive integers?
https://www.mathhomeworkanswers.org/124741/what-is-the-average-of-the-first-50-positive-integers?show=242253#a242253
<p><strong>when ever you need the average oof a group of evenly sapced numbers, you just have to take the average oof the smallest number and the largest number and divide by two. </strong></p>
<p> </p>
<p><strong>1+50= 51/2 = 25.5</strong></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/124741/what-is-the-average-of-the-first-50-positive-integers?show=242253#a242253Mon, 29 May 2017 06:59:03 +0000Answered: Complete the square: x^2+3x-38
https://www.mathhomeworkanswers.org/242097/complete-the-square-x-2-3x-38?show=242108#a242108
Halve the coefficient of the x term: 3/2 and square it: 9/4.<br />
<br />
Now rewrite: x^2+3x+9/4-9/4-38=(x+3/2)^2-(9/4+38)=<br />
<br />
(x+1.5)^2-40.25=(x+1.5)^2-6.3443^2=<br />
<br />
(x+1.5-6.3443)(x+1.5+6.3443)=<br />
<br />
(x-4.8443)(x+7.8443).Algebra 1 Answershttps://www.mathhomeworkanswers.org/242097/complete-the-square-x-2-3x-38?show=242108#a242108Thu, 25 May 2017 22:23:38 +0000Answered: if y=11, b=2 so plus y&b together what is yoyr answer
https://www.mathhomeworkanswers.org/242051/if-y-11-b-2-so-plus-y%26b-together-what-is-yoyr-answer?show=242084#a242084
<p style="text-align: justify;">You want to know what y+b equals? In this case it's the same as 11+2, which you probably know is 13, because it's just arithmetic. All that's happened is that in algebra letters represent numbers. You're not adding letters. So all we do is substitute 11 where we see y and substitute 2 where we see b.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/242051/if-y-11-b-2-so-plus-y%26b-together-what-is-yoyr-answer?show=242084#a242084Thu, 25 May 2017 18:09:50 +0000Answered: Yinka bought 8 plates at p nairas each and 4 bowls at q naira each. How much has he spent
https://www.mathhomeworkanswers.org/242019/yinka-bought-plates-nairas-each-bowls-naira-each-much-spent?show=242082#a242082
8p+4q is the total in algebraic formatAlgebra 1 Answershttps://www.mathhomeworkanswers.org/242019/yinka-bought-plates-nairas-each-bowls-naira-each-much-spent?show=242082#a242082Thu, 25 May 2017 17:51:44 +0000Answered: solve the inequality of 1/11c greater or equal to 9
https://www.mathhomeworkanswers.org/241999/solve-the-inequality-of-1-11c-greater-or-equal-to-9?show=242005#a242005
<p><em><a href="https://www.mathhomeworkanswers.org/241999/solve-the-inequality-of-1-11c-greater-or-equal-to-9" rel="nofollow">solve the inequality of 1/11c greater or equal to 9 </a></em></p>
<p>the inequality is: 1/11c <= 9</p>
<p>There are two possibilities here, 1) that c is positive. 2) that c is negative</p>
<p><span style="text-decoration: underline;">c positive</span> <span style="text-decoration: underline;">c negative</span></p>
<p>multiply both sides of multiply both sides of</p>
<p>the inequality by 11c, the inequality by 11c,</p>
<p>giving reverse the direction of the inequality</p>
<p>1 <= 99c 1 >= 99c</p>
<p><span style="text-decoration: underline;"><strong>c >= 1/99 </strong></span> <span style="text-decoration: underline;"><strong>c <= 1/99</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241999/solve-the-inequality-of-1-11c-greater-or-equal-to-9?show=242005#a242005Wed, 24 May 2017 09:34:02 +0000Answered: Which equation best represents the line of best fit for the scatterplot? A) y = x + 6 B) y = 2x + 6 C) y = -x + 6 D) y = -2x + 6
https://www.mathhomeworkanswers.org/241832/which-equation-best-represents-line-best-for-the-scatterplot?show=241838#a241838
<p><em>Which equation best represents the line of best fit for the scatterplot? </em><em>A) y = x + 6 B) y = 2x + 6 C) y = -x + 6 D) y = -2x + 6</em></p>
<p>It would be better here if we had an idea of what the scatter plot looked like.</p>
<p>Let’s look at the four options.</p>
<p>A) y = x + 6</p>
<p>B) y = 2x + 6</p>
<p>C) y = -x + 6</p>
<p>D) y = -2x + 6</p>
<p>They are all straight lines.</p>
<p>They all have the same y-intercept. They all pass through the point y = 6.</p>
<p>Options A and B have positive slopes, while options C and D have negative slopes.</p>
<p>If the y-values of the points in your scatter plot are <em>increasing</em> as the x-values <em>increase</em>, then you should consider the first two options, A and B. Otherwise consider C and D.</p>
<p>A close scrutiny of the points in the scatter plot should give you an idea of just how fast they are increasing, or decreasing, and whether the slope is 1 (option A) or 2 (option B).</p>
<p>The above comments should help you to identify the correct choice for your scatter plot.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241832/which-equation-best-represents-line-best-for-the-scatterplot?show=241838#a241838Thu, 18 May 2017 06:13:01 +0000Answered: how do you solve 3y +17 = -13
https://www.mathhomeworkanswers.org/241783/how-do-you-solve-3y-17-13?show=241790#a241790
<p><em><a rel="nofollow" href="https://www.mathhomeworkanswers.org/241783/how-do-you-solve-3y-17-13">how do you solve 3y +17 = -13 </a></em></p>
<p>The equation is,</p>
<p>3y + 17 = -13 now subtract 17from both sides</p>
<p>3y + 17 - 17 = -13 - 17 simplify</p>
<p>3y = -30 divide both sides by 3</p>
<p><span style="text-decoration: underline;">y = -10</span></p>
<p><span style="text-decoration: underline;"><strong>The answer is: y = -10</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241783/how-do-you-solve-3y-17-13?show=241790#a241790Tue, 16 May 2017 05:51:19 +0000Answered: What are the two numbers?
https://www.mathhomeworkanswers.org/241775/what-are-the-two-numbers?show=241776#a241776
A+B=6<br />
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A-B=3<br />
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Add: 2A=9 A=4.5, so B=6-A=6-4.5=1.5.<br />
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The two numbers are 4.5 and 1.5.Algebra 1 Answershttps://www.mathhomeworkanswers.org/241775/what-are-the-two-numbers?show=241776#a241776Sun, 14 May 2017 19:50:01 +0000Answered: If you know that $5 buys 7 tickets and $25 buys an unlimited, all you can ride wristband, how would you write an equation in slope-intercept form?
https://www.mathhomeworkanswers.org/211083/tickets-unlimited-wristband-write-equation-slope-intercept?show=241734#a241734
zfsfsddAlgebra 1 Answershttps://www.mathhomeworkanswers.org/211083/tickets-unlimited-wristband-write-equation-slope-intercept?show=241734#a241734Fri, 12 May 2017 15:30:57 +0000Answered: find the value of a+b+c
https://www.mathhomeworkanswers.org/241666/find-the-value-of-a-b-c?show=241673#a241673
<p>find the value of a+b+c, if a^2 + b^2 + c^2 + 3 = 2(a + b + c)</p>
<p>By inspection, <span style="text-decoration: underline;">a = b = c = 1</span></p>
<p><span style="text-decoration: underline;"><strong>Answer: (a + b + c) = 3</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241666/find-the-value-of-a-b-c?show=241673#a241673Tue, 09 May 2017 16:41:01 +0000Answered: hello I need help with this problem 3d + 23 + d = 263
https://www.mathhomeworkanswers.org/23686/hello-i-need-help-with-this-problem-3d-23-d-263?show=241626#a241626
3d+23+d=263<br />
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4d=240<br />
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d=240/4<br />
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d=60Algebra 1 Answershttps://www.mathhomeworkanswers.org/23686/hello-i-need-help-with-this-problem-3d-23-d-263?show=241626#a241626Mon, 08 May 2017 06:24:11 +0000Answered: if a*b= (a+b)squared divided by (a )squared - (b)squared find 3*4
https://www.mathhomeworkanswers.org/241603/if-a-b-a-b-squared-divided-by-a-squared-b-squared-find-3-4?show=241620#a241620
<p style="text-align: justify;">ab=(a+b)^2/(a^2-b^2)=(a+b)/(a-b) Note that if a=3 and b=4: 3*4=12≠(3+4)/(3-4), because 12≠-7.
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ab(a-b)-a-b=0; a^2b-ab^2-a=b; a^2-a(b^2+1)/b=1
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Complete the square: a^2-a(b^2+1)/b+(b^2+1)^2/(4b^2)=1+(b^2+1)^2/(4b^2)
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(a-(b^2+1)/(2b))^2=1+(b^2+1)^2/(4b^2)
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a-(b^2+1)/(2b)=√(1+(b^2+1)^2/(4b^2)) so we can relate a and b.
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One solution is b=1, a=1+√2.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241603/if-a-b-a-b-squared-divided-by-a-squared-b-squared-find-3-4?show=241620#a241620Sun, 07 May 2017 22:58:03 +0000Answered: Can you help me solve this equation (3a^3)^2
https://www.mathhomeworkanswers.org/241602/can-you-help-me-solve-this-equation-3a-3-2?show=241611#a241611
(3a³)²=3².a³+² =9a^5Algebra 1 Answershttps://www.mathhomeworkanswers.org/241602/can-you-help-me-solve-this-equation-3a-3-2?show=241611#a241611Sun, 07 May 2017 21:06:33 +0000Answered: factorise 2x^2+7x+6
https://www.mathhomeworkanswers.org/241578/factorise-2x-2-7x-6?show=241580#a241580
<p><em><span style="text-decoration: underline;"><a rel="nofollow" href="https://www.mathhomeworkanswers.org/241578/factorise-2x-2-7x-6">factorise 2x^2+7x+6 </a></span></em></p>
<p>2x^2 + 7x + 6 = <span style="text-decoration: underline;"><strong>(2x + 3)(x + 2)</strong></span></p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241578/factorise-2x-2-7x-6?show=241580#a241580Fri, 05 May 2017 15:46:02 +0000Answered: evaluate 12 C5
https://www.mathhomeworkanswers.org/241563/evaluate-12-c5?show=241564#a241564
12C5=12/5;(12-5);=12;/5;*7;=792Algebra 1 Answershttps://www.mathhomeworkanswers.org/241563/evaluate-12-c5?show=241564#a241564Thu, 04 May 2017 19:00:31 +0000Answered: 10x + 11y = -4 in slope intercept form
https://www.mathhomeworkanswers.org/241525/10x-11y-4-in-slope-intercept-form?show=241526#a241526
<p style="text-align:justify">Divide through by 11: 10x/11+y=-4/11. So y=-10x/11-4/11 or y+4/11=-10x/11. Slope = -10/11, y-intercept=-4/11.
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This can also be written y=-10/11(x+2/5), where x-intercept is -2/5.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241525/10x-11y-4-in-slope-intercept-form?show=241526#a241526Wed, 03 May 2017 22:04:15 +0000Answered: sqrt(1/5) - sqrt(5)
https://www.mathhomeworkanswers.org/241473/sqrt-1-5-sqrt-5?show=241481#a241481
sqrt(1/5) - sqrt(5) = 1/sqrt(5) - sqrt(5) = (1-5)/sqrt(5) = -4 / sqrt(5) = -4*sqrt(1/5) = -4*sqrt(0.2)Algebra 1 Answershttps://www.mathhomeworkanswers.org/241473/sqrt-1-5-sqrt-5?show=241481#a241481Wed, 03 May 2017 09:54:47 +0000Answered: what is a tape diagram?
https://www.mathhomeworkanswers.org/52063/what-is-a-tape-diagram?show=241465#a241465
Who likes buttsAlgebra 1 Answershttps://www.mathhomeworkanswers.org/52063/what-is-a-tape-diagram?show=241465#a241465Tue, 02 May 2017 22:20:14 +0000Answered: (X²+3x-28÷(x+7)
https://www.mathhomeworkanswers.org/241379/x%C2%B2-3x-28-x-7?show=241433#a241433
x^2+3x-28=(x+7)(x-4), so (x+7)(x-4)/(x+7)=x-4 provided x≠-7.Algebra 1 Answershttps://www.mathhomeworkanswers.org/241379/x%C2%B2-3x-28-x-7?show=241433#a241433Tue, 02 May 2017 08:07:01 +0000Answered: WHAT IS 25 DIVIDED BY 3?
https://www.mathhomeworkanswers.org/51206/what-is-25-divided-by-3?show=241283#a241283
Its 8.3. There is no actual real answer that u would get 25 instead its 24.9 which is close. If ur stuck tell ur teacher or ur parent to help :)Algebra 1 Answershttps://www.mathhomeworkanswers.org/51206/what-is-25-divided-by-3?show=241283#a241283Mon, 01 May 2017 21:36:09 +0000Answered: For which value of x should the expression be further simplified? The square root of 33x A.7 B. 13 C. 15 D, 35
https://www.mathhomeworkanswers.org/241326/which-value-should-expression-further-simplified-square-root?show=241374#a241374
<p style="text-align: justify;">When x=15, this becomes √495=√9*55=3√55. No other value of the choices given produce this simplification.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241326/which-value-should-expression-further-simplified-square-root?show=241374#a241374Mon, 01 May 2017 13:56:55 +0000Answered: find the value of r in the equation given: 17663.7= 25000 + 15247/(1+r) + 15247/(1+r)^2 + 15247/(1+r)^3 + 15247/(1+r)^4
https://www.mathhomeworkanswers.org/241021/find-value-equation-given-17663-25000-15247-15247-15247-15247?show=241184#a241184
<p style="text-align: justify;">Let A=(17663.7-25000)/15247=-0.4812 approx, and x=1/(1+r), this equation can be written:</p>
<p style="text-align: justify;">A=x+x^2+x^3+x^4=x(1-x^4)/(1-x) using the formula for the sum of terms for a geometric progression. Clearly x≠1 because that would make A=4.</p>
<p style="text-align: justify;">Since A is a negative value, the expression in x must also be negative. When x<-1 or x>0 the expression is positive. Therefore, if there is a solution, it must be when -1<x<0. When x=-0.6058 approx the expression is -0.3264 which is 0.8076 short of A. Since r=1/x-1, r=2.6506 when x=-0.6058. This value of r is the closest to solving the equation, but it does not fulfil the equation because the right-hand side of the original equation is bigger than 25000. The equation has no solution for r.</p>Algebra 1 Answershttps://www.mathhomeworkanswers.org/241021/find-value-equation-given-17663-25000-15247-15247-15247-15247?show=241184#a241184Thu, 27 Apr 2017 08:13:29 +0000Answered: Find a polynomial that fits the points (2,3),(-1,5),(0,1)(1,4) and (2,10)
https://www.mathhomeworkanswers.org/241081/find-a-polynomial-that-fits-the-points-2-3-1-5-0-1-1-4-and-2-10?show=241114#a241114
sorry i am only in 7th grade i don't know this stuffAlgebra 1 Answershttps://www.mathhomeworkanswers.org/241081/find-a-polynomial-that-fits-the-points-2-3-1-5-0-1-1-4-and-2-10?show=241114#a241114Tue, 25 Apr 2017 18:11:31 +0000Answered: find the product of 6x ( a3-b3 )
https://www.mathhomeworkanswers.org/127654/find-the-product-of-6x-a3-b3?show=241011#a241011
If you remember that 6 x 4 (say) is 6 lots of 4 or to write out a long way 4+4+4+4+4+4 when you've 6 lots of anything you just write it down 6 times.<br />
<br />
so you've got<br />
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a3-b3<br />
<br />
a3-b3<br />
<br />
a3-b3<br />
<br />
a3-b3<br />
a3-b3<br />
a3-b3 <br />
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Which is 6a3-6b3Algebra 1 Answershttps://www.mathhomeworkanswers.org/127654/find-the-product-of-6x-a3-b3?show=241011#a241011Sun, 23 Apr 2017 07:30:09 +0000Answered: what is the x & y-intercepts of y=3x+3 (-1,-1)
https://www.mathhomeworkanswers.org/240944/what-is-the-x-%26-y-intercepts-of-y-3x-3-1-1?show=241009#a241009
This question does not completely make sense as (-1,-1) is not a point on the line. We c an show this because if x=-1 we have y=3*-1+3=-3+3=0.So when x=-1 y=0. Therefore the x intercept is -1.<br />
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The y intercept is always easy to find becuase it is the number on its own in the equation +3<br />
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so the x intercept is (-1,0) The y intercept is (0,3)Algebra 1 Answershttps://www.mathhomeworkanswers.org/240944/what-is-the-x-%26-y-intercepts-of-y-3x-3-1-1?show=241009#a241009Sun, 23 Apr 2017 07:21:56 +0000How can you tell from the model if the ratio is increasing or decreasing
https://www.mathhomeworkanswers.org/240926/can-you-tell-from-the-model-the-ratio-increasing-decreasing
The model was (2/9)-(8/9t+99)Algebra 1 Answershttps://www.mathhomeworkanswers.org/240926/can-you-tell-from-the-model-the-ratio-increasing-decreasingThu, 20 Apr 2017 13:36:06 +0000