Answer:
(b) the unknown angle is 80°
Step-by-step explanation:
The unkown angle is:
[2(x-10)]°
Substituting "x" by 50 (part a)
[2(50-10)]°=[2(40)]°=80°
Answer:

it must always have one of the sign
Answer:
|−∣=7
Explanation:
∣−∣
= |(-2-5)|
= |-2-5|
= | -7|=7
I think the correct answer is b 75
Hi there!
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I believe your answer is:

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Here’s why:
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Hope this helps you. I apologize if it’s incorrect.