Answer:
-8.5
Step-by-step explanation:
-4x+8=42
42-8=34
34/-4=8.5
Answer:
Look below.
Step-by-step explanation:
Good ol' Pythagorean Theorem.
To find the short side of the larger triangle, we'll use this equation:

You can solve the rest on your own.
Use the same type of equation for the smaller triangle, except your b would be the hypotenuse, so that equation would look something like this:

Hope it helped! Also, there seems to be a help video, if you didn't understand this explanation, why don't you go ahead and watch it?
In the box at the top, it would be 8.
The boxes that are side by side would be 85+40.
the box all the way at the bottom would be 125
Answer:
108
Step-by-step explanation: