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nikitadnepr [17]
3 years ago
11

∠E and ∠F are vertical angles with m∠E=5x+10 and m∠F=7x−12 . What is the value of x?

Mathematics
2 answers:
galina1969 [7]3 years ago
8 0

Answer:  11

Step-by-step explanation:

We are given that ∠E and ∠F are vertical angles with m∠E=5x+10 and m∠F=7x−12 .

We know that vertical angles are congruent, then their measures must be equal.

i.e. if ∠E and ∠F are vertical angles.

⇒ m∠E=m∠F

\Rightarrow\ 5x+10=7x-12   [Substitute the measures of ∠E and ∠F]

Subtract 5x from both sides , we get

10=2x-12

Add 12 on both sides , we get

22=2x

Divide both sides by 2 , we get

11=x or x=11

Hence, the value of x= 11

IgorC [24]3 years ago
5 0
Vertical angles are equal

5x + 10 = 7x - 12
5x - 7x = -12 - 10
-2x = -22
x = -22/-2
x = 11 <===
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