Answer:
140°
Step-by-step explanation:
The other angle inside is 40 so 180-40 is 140°
a 10-by-10 grid means there are 100 squares and percent is out of 100 so if you have 42% then you just need to fill in 42 squares
Answer:

Step-by-step explanation:
Given the function

We can find the inverse function by exchanging x and y, and then solve for y.

Replace x with y.

square both sides


Hence,

It is a right, isosceles triangle.
Time of the 20 to the x then get 420