Answer:

Step-by-step explanation:
To solve this problem, you must:
- Subtract 7 from both sides of the equation:

- Now, you can factor it. Choose two numbers whose sum -14 and whose product is 45. These numbers would be -9 and -5. Therefore, you obtain the following solution:

Answer:
I'm pretty sure it's A since B,C,and D wouldn't make sense.
Let's go through the answer choices one by one:
A. False. The line segment contains more than just the endpoints
B. False. There are points in this description that extend beyond the endpoints. If this was a line instead of a segment, then choice B would be the answer
C. True. This is the answer. Though your teacher should have added "collinear" to the sentence to make it clear that the points are between M and N, and also collinear to M and N. All of these points form the line segment MN
D. False. That would be the perpendicular bisector of MN
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So once again, the final answer is choice C
Answer:
Step-by-step explanation:
Let the number of mysteries solved=x, then according to question, number of mysteries Evan solved=
, also together they solve all the mysteries, thus






Thus, total number of mysteries solved=63.
Also, total number of mysteries Evan solved=
.