ruizjenny622
ruizjenny622
12-01-2020
Mathematics
contestada
I NEED HELP ON DOING THIS
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samboss8982
samboss8982
12-01-2020
If all the angles add up to 90 degrees then you can set the equation 7x-9*2x=90
Simplify
9x-9=90
Plus 9 both sides
9x=99
Divide by 9 on both sides
X=11
Answer Link
oliviango2005
oliviango2005
12-01-2020
1. Write out an equation to solve this.
2x + 7x - 9 = 90 degrees
2. Add 2x to 7x
9x - 9 = 90 degrees
3. Add 9 to both sides of the equal sign
9x = 99 degrees
4. Divide 9x by 9 to get x
x = 11 degrees
Answer Link
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