Answer:
a=50
Step-by-step explanation:
a + 2a + 30 = 180
3a + 30 = 180
(-150 from both sides)
3a = 150
(Divide by 3 from both sides)
a = 50
Answer:
5n units
Step-by-step explanation:
C=2πr =2·π·2.5
Answer:
the answer is 15 because you have to do the problem in the parentheses first then multiply by 5
Answer:
-3
Step-by-step explanation:

First, you can factor out a 6:

Next, you can factor the quadratic:

Since the only value of x that could set this equation equal to 0 is -3, that is the answer. Hope this helps!
This is middle school work woah