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Find the measure of M

Find The Measure Of M class=

Sagot :

Answer:

∠M = 78º

∠N = 68º

∠P = 34º

Step-by-step explanation:

we know that the inside of a triangle is equal to 180º. we also know that angle p and angle q equal 180º when added together because that's the angle of a straight line. first we need to find angle p.

180 - 146 = 34º

now we can set it up so that all the angles equal 180º when added together.

(5y + 3) + (4y + 8) + 34 = 180

5y + 4y = 9y

9y + 3 + 8 + 34 = 180

3 + 8 + 34 = 45

9y + 45 = 180

    -45      -45

-------------------

9y = 135

÷9      ÷9

y = 15

now we can plug 15 in for y

(5 x 15 + 3) = 78º

(4 x 15 + 8) = 68º

to double check, add all three angles and make sure they equal 180º

78 + 68 + 34 = 180

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