Soebody please help? PLease solve this question?

Question

THE SAINT LOUIS GATEWAY ARCH

The Saint Louis Gateway Arch (pictured at right) has a shape much like a parabola. Suppose the Gateway Arch can be approximated by , where both x and y represent distances in feet and the origin is the point on the ground directly below the arch's apex (its highest point).

a. Find the x–intercepts of the Gateway Arch. What does this information tell you? Use a calculator to evaluate your answers.

b. How wide is the arch at its base?

c. How tall is the arch? How did you find your solution?

Answer 1

A)
y=630-0.00635xx
x intercepts:
0=630-0.00635xx
-630=-0.00635xx
99212.5984251968=xx
sqrt(99212.5984251968)=
314.980314345511
and
-314.980314345511

X intercepts:
(-314.980314345511,0)
and
(+314.980314345511,0)

y intercept:
y=630-0.0065xx
y=630-0.0065*0
y=630
(0,630)

B)
Width
abs(x intercept)+abs(x intercept)
abs(+314.980314345511)+abs(-314.980314345511)=
629.960628691022 feet

C)
Height
630 feet (y intercept)

Answer 2

work force of 350 men with a contractor can finish a work in 12 months how many more men should be employed so that the work is completed in 7 month??

Answer 3

A sum of money is divided among three persons X, Y, and Z, in the ratio 10:7:5. If Y gets $14 more than Z, how much will X get and what is the total sum of moner?