Answer:
D
You use algebra and solve it for y.
Step-by-step explanation:
4x-3y=18
3y=4x+18
y=4/3x +6
The value of 'x' is 10°
<h3>How to determine the angles</h3>
We have that supplementary angles sum up to 180
M∠A = (6x +4)° and m∠B = (10x + 16)°.
Then,
6x + 4 + 10x + 16 = 180
Collect like terms
16x + 20 = 180
16x = 180 - 20
16x = 160
x = 160/ 16
x = 10°
Thus, the value of 'x' is 10°
Learn more about supplementary angles here:
brainly.com/question/2046046
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Answer:
215
Step-by-step explanation:
you add all three together and then divide by three to get the average.
