Answer:
48
Step-by-step explanation:
2x + 3 = 15
2x = 15-3
2x = 12
x = 12 ÷ 2
x = 6
8x = 6 × 8
8x = 48
Answer:
3 and 4 are the only ones that are right angles.
Step-by-step explanation:
A^2+B^2=C^2
Direct variation is of the form y=kx, where k is the constant of variation. It is "direct" because as x increases/decreases so does y in the same magnitude.
y=kx, In this case the dependent variable y, is miles and the independent variable x, is gallons. We are told that the car gets 28mi/gal so
y=28x