Find the value of x using supplementary angles

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Mathematics
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of angles in a triangle?
270 degrees
360 degrees
180 degrees
90 degrees
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do supplementary angles add up to?
90 degrees
360 degrees
180 degrees
270 degrees
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If angle A is 6X + 2 and angle B is 2X + 10, what is the equation to find X if they are supplementary?
6X + 2 + 2X + 10 = 90
6X + 2 + 2X + 10 = 180
6X + 2 + 2X + 10 = 360
6X + 2 + 2X + 10 = 270
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving the equation 8X + 12 = 180?
Multiply both sides by 8
Subtract 12 from both sides
Add 12 to both sides
Divide both sides by 8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of X after solving the equation 8X = 168?
22
23
21
20
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