Question

Pls help me, Me and my mom have been doing this for like 3 hours

Answer 1

Answer:

9: -9

10: 18

11: 40

12: -4.5

1st number:-9

2nd number: -180

3rd number: -9

Step-by-step explanation:

I did it on paper but typed it on this stuff so you can understand it

PLEASE GIVE ME BRAINLIEST AND THANK YOU FOR THIS CHALLENGE VERY EASY TO DO.

Answer 2

Answer:

-9,4.5,90

Step-by-step explanation:

9) $\frac{12xy}{x-y}$

So you basically substitute the values in for x and y which give you

$\frac{12(3)(-1)}{3-(-1)}$

$\frac{12(-3)}{3+1}$

$\frac{-36}{4} \\-9$

10)    Same thing:

$\frac{4xy}{2x} \\\\\frac{4(3)(9)}{2(3)} \\\\\frac{4(27)}{6} \\\\4.5$

11)  Same for this:

$\frac{2}{3}(9x+xy)\\\\ \frac{2}{3}(9(5)(3)\\\\\frac{2}{3}( 135)$

3*45=135

$2(45)\\90$

Based on this information, I want you to figure out the last one. If you need help reply to this answer and I will respond.