Answer:
D
the first one obviously isnt random
the second one is selective then random
the third one is also selective
the fourth one is random
Multiply first equation by -5 and 2nd by 2, add them
15x+20y=-100
<u>2x-20y=32 +</u>
17x+0y=-68
17x=-68
divide both sides by 17
x=-4
the x value is -4
Answer:
9.5
Step-by-step explanation:
Add all the sides together
