Which is equivalent to (-5)(8)? A. (5)(8)
B. (-5)(-8)
C. -[(5)(8)]. D. -[(5)(-8)]

D

Step-by-step explanation:

-((5)(-8))= (-5)(8)

- + = -

- - = +

c

Step-by-step explanation positive times a negative is a negative

positive times a positive is a positive

negative times a negative is a positive

pemdas look it up if you dont know what it is

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

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