Question

20 POINTS FOR ANYONE TO ANSWER CORRECTLY PLEASE HELP!!!!

Answer 1

Lets solve this step by step. A is not a positive because (-9)*8=-72. B if positive because -12*(-3)=36. A negative times a negative is a positive. C is also a positive because (-2/5)*(-4) is a positive. D is not a positive because like A, one is negative and the other number is positive. A negative times a positive is a negative. I hope it helped!

Answer 2

We need to solve this by looking at each answer choice.

A. $- \frac{w}{9}=8$

To solve for w, we need to multiply by -9 on both sides.

So, $-\frac{w}{9} \times -9 = 8 \times -9\\\\w = -72$

This is not a positive solution. So eliminate A.

B. $(-12) = \frac{y}{(-3)}$

To solve for y, we need to multiply by -3 on both sides.

So, $(-12) \times (-3) = \frac{y}{(-3)} \times (-3)\\\\y = 36$

This is a positive solution. This is one of our answers.

C. $[tex]-4\times \frac{-5}{2}= -\frac{2}{5}z\times -\frac{5}{2}\\\\z = 10$[/tex]

We need to multiply by -5/2 on both sides to solve for z.

This is a positive solution. This is one of our answers.

D. $\frac{1}{7}x = -2$

We need to multiply by 7 on both sides to solve for x.

So, $\frac{1}{7} x \times 7 = -2 \times 7\\\\x = -14$

This is a negative solution. So this is not the answer.

So your final answer is B and C.