Answer:
I got the same question on Khan Academy. I was going to ask that too but saw that you already did. Maybe try to point it out to someone else on Brainly. Sorry that I could not help.
Step-by-step explanation:
The answer is 38 degrees because for every triangle, the angles add up to 180 and the small square on the triangle represents it is a right triangle, which has 90 degrees. 38 + 52 + 90 = 180
Answer:
(-7, -10)

Step-by-step explanation:

Substitute x for -7.

Multiply 4 by -7.

Add 28 on both sides.

Divide -4 on both sides.

Try using the back of the book.