<h2><u>
Answer:</u></h2><h2>

</h2><h2 /><h2><u>Solution Steps:</u></h2>
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<h3>(Below)</h3>
(2x+40)+(3x+20)=180
because they are supplementary angles
therefore:
2x+3x+40+20=180
5x+60=180
5x=120
x=24
Answer:
The answer is option B. 240
If i = √-1 ,
then ...
i² = (√-1)² = -1
i³ = - √-1 = -i <== the answer to the question
i⁴ = (i²) · (i²) = (-1) · (-1) = 1
and then the whole thing starts over again, for higher powers of i .