Answer:
7. 8200 miles
8. $350
Step-by-step explanation:
7. The first trip nets 3400 miles; the next four trips (for a total of five) net 1200 miles each, so the total for 5 round trips is ...
... 3400 + 4×1200 = 8200 . . . miles
8. The first month costs $100; the next 5 months (for a total of 6) cost $50 each, so the total for 6 months is ...
... $100 + 5×$50 = $350
Answer:
150°
Step-by-step explanation:
It's congruent to the one across from it which is 150°.
Answer:
x = -5
Step-by-step explanation:
-9(x+3) = -9x-27
Add 27 onto both sides and get -9x = 45
Divide -9 on both sides and you'll see that x = -5 because 45/-9
Answer: B. 5/13
This is the same as writing 
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Reason:
We have two given sides of this right triangle. Use the pythagorean theorem to find the missing side.
a = 5 and b = 12 are the two known legs; c is the unknown hypotenuse

The hypotenuse is exactly 13 units long. This is a 5-12-13 right triangle.
Now we can compute sine of theta

This points us to choice B as the final answer.
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Extra Info (optional)
- 5/12 is the value of tan(theta) since it's opposite/adjacent
- 12/5 is the value of cot(theta), the reciprocal of tangent
- 12/13 is the value of cos(theta), because cos = adjacent/hypotenuse