Question

find the value of x.

Answer 1

are these in degrees?

Answer 2

Is that a right angle?

Answer 3

yeah

Answer 4

yeah they are in degrees

Answer 5

3x-9=90

solving for x gives x=33

making the second one 40 degrees

Answer 6

That is if that 3x-9 is the angle of the vertical line to the ground and the angle is "right"

Answer 7

3x-9 is a right angle

Answer 8

@bcdrane42

Would it be correct to write:

3x - 9 + x + 7 = 90 because perpendicular lines meet to form right angles and right angles have a measure of 90. There's one more theorem that goes with that.

Answer 9

Well you have to combine the 3x-9 and x+7 = to 90
3x-9+x+7=90 combine like terms
4x=92 Divide to get x by itself
x=23 Then plug that back into x to get the two other angles.

Answer 10

so i would go
3*23-9 = 60
23+7=30

Answer 11

Yep should be that.

Answer 12

Actually it looks like 3x-9 represents the angle between the vertical line and the 2ND LINE, not the ground. That would make what directx says correct:

3x-9+x+7=90

solving for x gives you:

23

Answer 13

right angels give you 90 derees so it should add up to 90 degrees