if x>0 and x3 + 1/9x3 = 25/36, find x3 + 1/27x3?

this is an question from the chapter expansions i am unable to find it. please give me this answer if u see this question.....
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

me assume that stuf shood be..... x^3 +(1/9)x^3 =25/36..... or (10/9)x^3=25/36.... so x^3=(9/10)*(25/36)=225/360 =0.625.... then, x=kube root(0.625)=0.854987973.... ######## me ges yu want x^3 +(1/27)x^3.... or (28/27)x^3.... =(28/27)*0.625.... =0.648148148148148... about 41/64 or 24/37
by

Related questions

6 answers
solve 27X3+54X2+198X-73=0
asked Nov 27, 2013 in Algebra 1 Answers by Mahendra kalita | 2.3k views
1 answer
Select the difference of (4x2 - 7x3) - (2x2 - 9x3).
asked Aug 13, 2014 in Algebra 1 Answers by capoislamort Level 1 User (580 points) | 772 views
1 answer
what is The coefficients of the expression 7x4-9x3+2x2
asked Jul 1, 2013 in Algebra 1 Answers by anonymous | 748 views
1 answer
relative extrema for 9x3+y3/3-4xy
asked Oct 20, 2011 in Calculus Answers by anonymous | 874 views
1 answer
if 213=25,214=36,215=47,216=58 then 218=?
asked Apr 14, 2013 in Algebra 1 Answers by anonymous | 638 views
1 answer
Find the real root of the equation x3+6x+5=0 using bisection?
asked Feb 18, 2013 in Statistics Answers by reshma Level 1 User (120 points) | 1.5k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,775 users