Question

I really need help??

Answer 1

I know the answers are
2. 86
3. 19
4. 7

Answer 2

but I need someone to explain how to get those answers?

Answer 3

HI :DD

Answer 4

for question 2.

you need to use the angle sum formula.

As you have 5 sides i think it is (n-2) x 180 degrees

n = number of sides on polygon.

so you have 5 sides sub that into equation.

you get 3 x 180 = 540 degrees.

So total sum of that pentagon ( 5 sides) must equal to 540.

you have 124 , 95, 143, 92. Add all 4 up and minus that from 540.

So 540- 454 = 86 degrees.

Answer 5

HIII sour

Answer 6

For number 3 you set the equation up like this: 2(3x-5)=5x-2
6x-10=5x-2
x=8
Then plug back in to the 3x-5 to get 19.

Answer 7

For number 4, you should first start with the fact that the 3 angles of a triangle add up to 180. The equation would be set up as follows:
8x+11x-1+7x-1=180

Solve for x and you have your answer.

Answer 8

thnk you both

Answer 9

nws clara :)

Answer 10

Are you good or do you need one written out?

Answer 11

you're welcome :)