Question

If y is directly proportional to the square root of x, and y = 25 when x = 3, find x when y = 100.

Answer 1

√x/100 = √3/25
√x = (√3/25)(100)
x = [(√3/25)(100)]^2
x = 48

Hence, x = 48 when y = 100
does that help?

Answer 2

yes it does thnks :)

Answer 3

welcome:)

Answer 4

can u help me w another one?

Answer 5

yeah!

Answer 6

The volume of a cone varies jointly as the height and the square of the radius of the base. A cone height 8 cm and a base of diameter 9 cm has volume 54π. Find the constant of variation and use it to develop the general formula for the volume of a cone.

Answer 7

is it multiple chose

Answer 8

yes
V = 0.33π , V = 54πr2h
V = 0.33πr2h, V = 3πr

Answer 9

V = (1/3)h*r^2 this is what i came up with

Answer 10

im not sure how to turn in 1/3 into a decimal

Answer 11

v= 0.33 pi r2h?

Answer 12

yes!

Answer 13

aa okaii :)