Answer:
n+12=31
n=31-12
n=19
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Use SOHCAHTOA.
sinθ = 
Opposite side length= 12
Hypotenuse length = 37
Find the adjacent side length (b) using the Pythagorean theorem.

b = 35
tanθ =
= 12/35
Choice B is the correct answer.
Mean= (5+6+5+6+9)/5= 7.2 coins
Explanation: The mean is the average of a data set. Add the numbers from the data set and divide by how many numbers.
Answer:a reflection across the line containing AB
Step-by-step explanation:
Part A: a percent decrease
part B: 12.5 percent decrease