Answer:
the answer is 82° because if u added 45+53+82 it would come out to be 180° which is the overall degrees of a triangle.
Letter B is the answer to your question
I'd personally go with A and C, The rest don't make too much sense. Don't count on my answer just yet though.

Change the mixed fractions to improper fractions.
To do this, multiply the whole number part by the denominator. Add that to the numerator. Then write the result on top of the denominator.
You would now have:

Change the division sign to a multiplication sign by turning the second fraction upside down.
That is,

The answer is:

This can be simplified to:
Answer:
<em>B.) 440</em>
Explanation:
I added everything together.