for what value of x is <1 complementary to <2, if m <1=5x+4 and m <2=7x+2. a. 3 b.7 c.1 d.14.5

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13-01-2017
Mathematics

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for what value of x is <1 complementary to <2, if m <1=5x+4 and m <2=7x+2. a. 3 b.7 c.1 d.14.5

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apologiabiology apologiabiology · Answer 1 · 2017-01-13T22:51:10+01:00

apologiabiology apologiabiology

13-01-2017

complementary means adds to 90 degrees

so
∠1+∠2=90

given
∠1=5x+4 and
∠2=7x+2
so

∠1+∠2=90
5x+4+7x+2=90
5x+7x+4+2=90
12x+6=90
minus 6 both sides
12x=84
divide both sides by 12
x=7

answer is B

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610032197 610032197 · Answer 2 · 2019-06-12T02:48:57+02:00

610032197 610032197

12-06-2019

Answer: B. 7

Step-by-step explanation:

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