algebra 2

If Q varies inversely as the square root of R and Q=2 when R=4, what is Q when R is 25?

does Q=625
im not sure can someone double check it for me.

1. 👍 0
2. 👎 0
3. 👁 50
1. Q = k/sqrt(R) = 2,
k / sqrt(4) = 2,
k = 2*sqrt4 = 2*2 = 4.

Q = k/sqrt(R) = 4/sqrt25 = 4/5.

1. 👍 0
2. 👎 0
posted by Henry

Similar Questions

1. Inverse Variation

Help me please.. Explain also :( 1. E is inversely proportional to Z and Z = 4 when E = 6. 2. P varies inversely as Q and Q = 2/3 when P = 1/2. 3.R is inversely proportional to the square of I and I = 25 when R = 100. 4. F varies

asked by Elmo Schnittka on November 9, 2011
2. Math/Algebra

Im stuck on two problems and would really appreciate the help. 1. y varies jointly as a and b, and inversely as the square root of c. y=28 when a=2, b=7, and c=9. Find y when a=4, b=2, and c=4 2. y varies directly as x and

asked by Jay on October 2, 2015
3. Pre Cal

If x varies directly as y62, inversely as z, and inversely as the square root of w, what happens to x when y is multiplied by 3, z is doubled, and w is quadrupled? I would really appriciate it if someone could help me understand

asked by Marie on February 21, 2007

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s

asked by Soly on October 10, 2007
5. Variation-Check Problems

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s

asked by Soly on October 8, 2007
6. variation

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s

asked by Soly on October 9, 2007
7. variation

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s

asked by Soly on October 9, 2007
8. Pre Cal

Ooops! I wrote it wrong, here's the problem: if x varies directly as y^2, inversely as z, and inversely as the square root of w, what happens to x when y is multiplied by 3, z is doubled, and w is quadrupled? I would really

asked by Marie on February 22, 2007
9. precalculus

the variable j varies jointly as the square of h and as the cube root of a, and it varies inversely as s. What happens to j when h is doubled, a is multiplied by 8, and s is multiplied by 4?

asked by cody on August 31, 2011
10. math

W varies directly to the squard of a and inversely as the square root of d

asked by Elscy on July 3, 2016

More Similar Questions