Answer:

Step-by-step explanation:
1. Combine like terms
2y-7y = -5y
-5y=5
2. Divide by -5 and the answer is 
Answer:
80
Step-by-step explanation:
2, 0 1/2 X+5. x>2
answer 80
Answer:
Yes
Step-by-step explanation:
In right-angled triangles, the Theorem of Pythagoras can be applied. (The hypotenuse squared is equal to the sum of the other two sides squared).
The hypotenuse is always the longest side, therefore if it's a right-angled triangle:
15²+35² should equal to 38² and in this case it does.