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Sauron [17]
3 years ago
14

Solve for x A. 9 B. 10 C. 42 D. 12

Mathematics
2 answers:
Eva8 [605]3 years ago
8 0

Answer:

Given:-  

m∠DEF= (4x-8) °

m DE= 80°

Using a property :- m ∠DEF= 1/2 (m DE)

(4x-8) ° = 1/2 (80)

(4x-8)° =(40) °

4x-8=40

Add 8 to both sides:-

4x=48

Divide both sides by 4:-

\frac{4x}{4}=\frac{48}{4}

x=12

<u>OAmalOHopeO</u>

Cloud [144]3 years ago
4 0

Answer:

Option D, 12

Step-by-step explanation:

4x-8=80/2

or, 4x-8=40

or, 4x=48

or, x=12

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