Question

Can someone help me find x?

Answer 1

2x + (x+15) = 90

You tell me why.

Answer 2

I don't have any idea why........

Answer 3

Do you know what all the angles of a triangle add up to?

Answer 4

180 i believe

Answer 5

Yes. And do you see that your triangle has a right angle?

Answer 6

Yeah

Answer 7

How many degrees is a right angle?

Answer 8

90

Answer 9

How many degrees does that leave for the other 2 angles?

Answer 10

90

Answer 11

So you need to write and solve the equation that says that the sum of the other two angles = 90.

Answer 12

Those angles are 2x and x+15

Answer 13

okay... so how do i find x?

Answer 14

What equation did you write?

Answer 15

2x + (x+15) = 90

Answer 16

is that right?

Answer 17

Yes. Now solve it?

Answer 18

1. Add 2x +x
2. Subtract 15 from both sides
3. Divide both sides by 3

Answer 19

And the answer i get will be what x is?

Answer 20

What did you do? Show your work and I will see what you did right or wrong.

Answer 21

2x+(x+15)=90
3x=75
x=25

Answer 22

Perfect!! Good for you.

Answer 23

Thank you so much!!!

Answer 24

yw