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3 years ago

HELPPP!!! 10 PTS! M angle (6x + 15) = _____

Mathematics

2 answers:

Vilka [71]3 years ago

5 0

Answer:

57°

Step-by-step explanation:

Exterior Angle Theorem: An exterior angle of a triangle is equal to the sum of the opposite interior angles.

(9x+16) + (6x+15) = 136

15x + 31 = 136

15x = 105

x = 7

plug into (6x + 15)

6(7) + 15 = 42 + 15 = 57

vodka [1.7K]3 years ago

3 0

I think it is 90 :p (Good Luck)

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Ksenya-84 [330]

Assuming LCD means Lowest Common Denominator
Assuming by "and" you mean adding the two

Well, you go by the multiples of 7;
7, 14, 21, 28, 35, 42, 49, 56, 63, 70
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10, 20, 30, 40, 50, 60, 70, 80, 90, 100

Straight away you can see the lowest common multiple is 70,
Now to go about adding them,
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Then you add the two; 20/70 + 63/70 - now we can add them because they share the same denominator
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The LCD is 70

Quick tip, to find a common multiple (not necessarily the lowest) multiply the two denominators.

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