Question

Need help with these questions

Answer 1

9. C = -32y + 72

10. B 12(3/8x) + 9(1/3)

Answer 2

Question 9) c. -32y + 72

Question 10) B. 12 3/8 x + 9 1/3

Explanation:

Question 9

-8(4y - 9)

First open the parenthesis

-8(4y - 9) = (-8×4y) - (-8×9)

= -32y + 72

Question 10

3(4x - 2/9) + 1/2(3/4x + 20)

The first thing is to open the parenthesis:

3(4x - 2/9) + 1/2(3/4x + 20) =12x - 6/9 + (3/8)x + 1/40

Put the like erms together

3(4x - 2/9) + 1/2(3/4x + 20) =12x - 6/9 + (3/8)x + 10

= 12x + (3/8)x - 6/9 + 10

= (99/8)x - 2/3 + 10

= (99/8)x - 28/3

= 12 3/8 x + 9 1/3