13 1/4 is the answer
9 7/8 + 3 3/8
12 10/8
13 2/8
13 1/4 (simplified)
Sin404 = sin(360 + 44)
as sin(360 + α) = sinα
= sin44
we have
<u>Pieces of mail delivered in December by the US postal service</u>

<u>Pieces of mail delivered in January by the US postal service</u>

To find the total mail delivered for these two months, sum the two quantities
so

therefore
the correct solution is 
the error is in this part

To move decimal over one place 10 to the power of 10 should be 10 to the power of 11
Answer:
a
Step-by-step explanation:
i just did it