Answer:
x = 15
Step-by-step explanation:
The sum of the angles in a triangle is 180º
3x + 5x + 4x = 180
Combine like terms
12x = 180
Divide both sides by 12
x = 15
C = 5x
C = 5 * 15
C = 75º
Answer:
Step-by-step explanation:
4x-8y
Answer:
17.5
Step-by-step explanation:
15^2+9^2=225+81=306 then sqrt 306
You are going to pay for a total of 22 months, so the answer will be 12*22. This equals $264, or the first option.