X = - 23 y = - 5 z = - 10
2 answers:
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ANSWER
Step 3
EXPLANATION
The given polynomial expression is:
Fatau correctly expanded the parenthesis in the first step.
Fatau also correctly grouped the like terms to obtain:
Fatau committed a mistake at the third step.
Instead of obtaining,
He mistakenly got:
The measure of the exterior angle x is 90°.
We need to find the measure of the exterior angle x.
<h3>What is the exterior angle theorem formula? </h3>An exterior angle of a triangle is equal to the sum of its two opposite non-adjacent interior angles.
Now, x°=∠A+∠B
⇒x°=30°+60°=90°
Therefore, the measure of the exterior angle x is 90°.
To learn more about the exterior angle visit:
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