Answer:
If you take your computer screen and look at the corner, that is 90 degrees. If you cut that in half, you have a 45 degree angle.
Step-by-step explanation:
Answer: a = (1/4)a
x = 8°
y = 21°
27 + 3y = 90
3y = 63
x + 8x + 18 = 90
9x = 72
How are we supposed to help...?
x = 2 or
x = -7
(x - 2)(x + 7) = 0
x - 2 = 0
Add 2 to both sides
x - 2 + 2 = 2 + 0
x = 2
OR
x + 7 = 0
Subtract 7 from both sides
x + 7 - 7 = 0-7
Therefore
