Answer:
-12
Step-by-step explanation:
-15+x+y=
-15+(-3)+6
-15-3+6
-15+3
-12
Emma: Isosceles
Gabriel: Scalene
Jorge: idk
Makayla: Equilateral
Answer:
20
Step-by-step explanation:
You use the distributive property.
Distribute the 2 to whatever is inside the parentheses. (You will multiply)
4×2=8
2×6=12
Substitute the answers above into the parentheses.
(8+12)=20