_121_ R7 or 121 7/13
13)1580
13
28
26
20
13
7
Without seeing the picture, we don't know how DE and UV are related.
Answer:
63
Step-by-step explanation:
First, I wrote the fraction as 1 63/100. I believe this is simplest form so the numerator is 63.
ANSWER
b=11
EXPLANATION
The given quadratic equation is

We expand to get:

We simplify further by combining the x terms.

This is the standard form.
Comparing to

We have b=11