Answer:
x=3
Step-by-step explanation:
-3x=-7-2=-9
x=-9/-3=3
Answer:

Step-by-step explanation:


Answer:
They all look right but i'm not sure about the last one?
Step-by-step explanation:
Answer:
E
Step-by-step explanation:
2^2 = 4
√(4^2 + √5 ^2) = √21
Answer:
number of fourths in 3, 3÷ 1/4
Step-by-step explanation:
It shows 3 split up into fourths, 3÷ 1/4 equals 12 which is the amount of sections there are