If y varies directly as x and y = 70 when x = 10, find y when x = 36.
252
2,520
25,200
5.14

252

Step-by-step explanation:

y varies directly with x means y=kx where k is a constant.

A constant means it never changes no matter what the point (x,y) they give.

So y=kx means y/x=k (I just divided both sides by x here).

So we have the following proportion to solve:

70/10 reduces to 7:

Multiply both sides by 36:

Simplify left hand side:

So y is 252 when x is 36.

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.