i'm not sure how to help with the second thing, but for what looks like a quizzes, i think it should be 186
Answer:
4-9=-5
Step-by-step explanation:
do the work you get that
Answer: G = 2E + 3
<u>Step-by-step explanation:</u>
Let E represent Elena's age.
Then Gary(G) is two times Elena(E) plus 3 --> G = 2E + 3
Answer:
144°
Step-by-step explanation:
step 1
Find the measure of the central angle of the regular pentagon
Divide 360 degrees by 5 (the number of sides)

Let
c----> the center of the pentagon
we know that
m∠ECA=72°
m∠ACB=72°
therefore
m∠ECB=m∠ECA+m∠ACB
substitute the values
m∠ECB=72°+72°=144°
The measure of angle ECB is equal to the degrees that the pentagon rotate
24 maybe because 24 is a even number so it has to be 24 as the answer