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Sagot :
Answer:
Angle A is 46. Angle B is 134
Step-by-step explanation:
If two angles are supplementary, they equal 180 degrees. So in order to find the measure of each angle, you need to find out what x is, by setting both equations equal to 180.
So it would look a little like this:
6x-8+9x+53=180.
Group like terms together
15x+45=180
get x alone by subtracting 45 on both sides
15x=135
and divide by 15 on both sides
x=9
So now we figured out that x = 9. Now plug that number in for both equations to find the angles of both
6(9)-8
54-8
angle A is 46
9(9)+53
81+53
angle B is 134
And you can check your work by seeing if both angles actually add up to 180, by definition being supplementary
134+46.. is 180
So there you have it
Answer:
∠ A = 46° , ∠ B = 134°
Step-by-step explanation:
Supplementary angles sum to 180° , then
6x - 8 + 9x + 53 = 180 , that is
15x + 45 = 180 ( subtract 45 from both sides )
15x = 135 ( divide both sides by 15 )
x = 9
Then
∠ A = 6x - 8 = 6(9) - 8 = 54 - 8 = 46°
∠ B = 9x + 53 = 9(9) + 53 = 81 + 53 = 134°
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