Posted by **Trey** on Sunday, September 16, 2012 at 8:56pm.

If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?

- Math -
**Reiny**, Sunday, September 16, 2012 at 9:28pm
" b varies directly as the square root of w" --> b = k√w, where k is a constant

given: b = -24 , w = 36

-24 = k√36

k = -24/6 = -4

b = -4√w

1/8 = -4√w

√w = -1/32

by definition √w will be a positive number , so there is no solution.

Are you sure b wasn't -1/8 ?

- Math -
**edwin**, Monday, September 17, 2012 at 8:01pm
yes this is off a take home test

## Answer this Question

## Related Questions

- Pre-Algebra - If negative 20 equals 168, negative 15 equals 153, negative 10 ...
- math - a variable y varies directly as the square root of a varies x,and equals ...
- math - t varies directly as the square root of l. If l=81, then t=10 what is the...
- Pre-Algebra - If negative 20 equals 168, negative 15 equals 153, negative 10 ...
- Year 11 maths - My teacher said If x-2(square root xy)=9-4(square root 2) so ...
- Math - i^6 = (i^2)^3 = (-1)^3 = -1 The square, not the square root of -1 is 1...
- algebra - Could someone show me how to solve this joint variation problems? Y ...
- math - student claims that the square root of -x equals three has no solution, ...
- College Prep Math 4 - The formula is S=2 times the square root of 5 times L. S ...
- Math - DIRECT VARIATION 1. a is directly proportional to b.If a=15,then b=9 2. m...