# Math Ratios

posted by Nikki

Suppose A is directly proportional to B, B is inversely proportional to C and C is inversely proportional to D. Determine whether A and D are directly proportional, inversely proportional, or neither.

1. Reiny

C is inversely proportional to D ---> C = p/D
B is inversely proportional to C ---> B = qC
so B = q/(p/D) = (q/p)D

A is directly proportional to B --> A = rB
A = r(q/p) D
looks like A is directly proportional to D

## Similar Questions

1. ### physical science

the wavelength of an electromagnetic wave is ____________. a. directly proportional to its frequency b.inversely proportional to its velocity c. inversely proportional to its frequency d. none of the above
2. ### Algebra

x is directly proportional to y and is inversely proportional to the cube of z.
3. ### physics

If two different masses have the same kinetic energy, their momenta are: 1. inversely proportional to their masses 2. inversely proportional to the square roots of their masses 3. proportional to the squares of their masses 4. proportional …
4. ### Physics

If two different masses have the same kinetic energy, their momenta are: a. proportional to the squares of their masses b. proportional to their masses c. proportional to the square roots of their masses d. inversely proportional to …
5. ### 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 inversely …
6. ### physics

if a stone at the end of a string is whirled in a circle, the inward pull on the stone A) is known as the centrifugal force B) is inversely proportional to the speed of the object C) is inversely proportional to the square of the speed …
7. ### physics

The magnitude of the magnetic field produced by a long straight current-carrying wire is: proportional to both the current in the wire and the distance from the wire proportional to the current in the wire and inversely proportional …
8. ### chemistry

According to Boyle, pressure and volume of a confined gas are ____ proportional, and according to Charles, the volume of a gas at a constant pressure is____ proportional to its Kelvin temperature. A. directly; inversely B. directly; …
9. ### Physics

How does the electrical force relate to the charge of an object?
10. ### Math

This table shows the number of hours Harry spent watching television and the hours he spent doing his homework on three days last week. hours of tv: 1.5 2 3 hours of homework: 2 1.5 1 What kind of relationship do these data appear …

More Similar Questions