<em>Question 5</em>
Vertical angles are <u>congruent</u>. Therefore,
. The sum of two supplementary angles equals
.
Therefore, 
<em>Question 6</em>

<em>Question 7</em>
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<em>Question 8</em>
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Answer:Since the vehicles are travelling in the exact opposite direction, the sum of their rates is the rate at which they are separating. 48 + 64 = 112 miles per hour of separation.
728 miles ÷ 112 miles/hour = 6.5 hours
Step-by-step explanation:
THE ANSWER IS THE COMMON DIFFERENCE IS -7.2 (first answer)
PLEASE MARK BRAINLIEST :)
There are about 1241.4 miles of coast line in New Hampshire