Math homework help!

Question

Write an equation that expresses the statement. (Use k as the constant of proportionality.)

y is proportional to s and inversely proportional to t.

Write an equation that expresses the statement. (Use k as the constant of proportionality.)

A is proportional to the square of x and inversely proportional to the cube of t.

Write an equation that expresses the statement. (Use k as the constant of proportionality.) Qis proportional to the product of the squares of M and u and inversely proportional to the cube of a.

Express the statement as an equation. (Use k as the constant of proportionality.)

A varies inversely as r.

Use the given information to find the constant of proportionality.

If r = 6, then A = 10.

k=____

Express the statement as an equation. (Use k as the constant of proportionality.)

W is inversely proportional to the square of r.

Use the given information to find the constant of proportionality.

If r = 5, then W = 12.

k=____

Answer 1

y=ks/t

Q=k(Mu)^2/a^3 or Q =k(Mu/a)^2/a

A =k/r

10=k(6)

k = 10/6

k = 1 2/3

W=kr^2

12 =k(5^2) =25k

k = 12/25