The density of a certain material is such that it weighs 9 kilograms per cubic foot of volume. Express this density in grams per cup. Round your answer to
the nearest tenth.

15 units use socratic

step-by-step explanation: 15 units

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

8.3 and the 3 is repeating

hope this .