Answer:
4
Step-by-step explanation:
-8+12=4
4-12=-8
Substitution or elimination
If you add that together you get 28
Answer:
1/2y > 22
Step-by-step explanation:
This can also be written as
y/2 > 22
and
0.5y >22
Hope this helps!
Answer:
2√21
Step-by-step explanation:
1) Simplify.
√84
2) Simplify √84 to 2√21.
2√21