Q3.
r varies directly as the cube root ofy.
x = 6 when y = 8.
Find the value of x when y=64.

x = 12

Step-by-step explanation:

Given x varies as the cube root of y then the equation relating them is

x = k ← k is the constant of variation

To find k use the condition x = 6 when y = 8, thus

k = = = = 3

x = 3 ← equation of variation

When y = 64, then

x = 3 × = 3 × 4 = 12

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3