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Andrei [34K]
2 years ago
6

What’s the value of x? and what’s the measure of angel JHK?

Mathematics
2 answers:
quester [9]2 years ago
5 0

Answer:

<u>Because ∠GHI and ∠JHK are vertical angles, they're congruent. Therefore, set their angle measures equal to each other & solve for x.</u>

<u />x+7=3x-21\\x-3x=-7-21\\-2x=-28\\x=\frac{-28}{-2} =14\°

<u>Substitute in the value of x to find ∠JHK:</u>

<u />3x-21=3(14)-21=42-21=21\°

enot [183]2 years ago
3 0

Answer:

x = 14

JHK =  21

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

3x-21 = x+7

Subtract x from each side

3x-x -21 = x+7-x

2x-21 = 7

Add 21 to each side

2x-21+21 = 7+21

2x = 28

Divide by 2

2x/2 =28/2

x = 14

JHK = 3x-21 = 3(14) -21 = 42-21 = 21

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