Hello!
The angles are supplementary meaning they add to 180°
a + 2a + 3 = 180
Combine like terms
3a + 3 = 180
Subtract 3 from both sides
3a = 177
Divide both sides by 3
a = 59
the answer is 59°
Hope this helps!
90 degrees
Each angle of a rectangle equals 90 degrees.
Answer:
74 books
Step-by-step explanation:
2(3b+1)
2(3(12)+1
2(36+1)
2(37)
74
Answer:
Option B.
Step-by-step explanation:
The future value formula, for an annuity, is:

An annuity means that a number of payments happen during the period(an year, for example).
P is the value of the deposit, r is the interest rate, as a decimal, and n is the number of deposits.
In this question:
Deposits of $765.13, so 
Each month, for 3 years. An year has twelve months, so 
2% Interest a year. An year has 12 months, so 
Find the final amount of the account.

The final amount of the account will be $28,363.46, which is option B.
Here is the answer to your question