Answer:
35%
Step-by-step explanation:
See attached for visual
- 160= 8*20
- 8 = 1/20 = 5% of 160
- 56= 8*7
- 7*5% = 35%
56 is 35% of 160
The reason the "+ C" is not needed in the antiderivative when evaluating a definite integral is; The C's cancel each other out as desired.
<h3>How to represent Integrals?</h3>
Let us say we want to estimate the definite integral;
I = 
Now, for any C, f(x) + C is an antiderivative of f′(x).
From fundamental theorem of Calculus, we can say that;

where Ф(x) is any antiderivative of f'(x). Thus, Ф(x) = f(x) + C would not work because the C's will cancel each other.
Read more about Integrals at; brainly.com/question/22008756
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Answer:
B. juans solution is incorrect
Step-by-step explanation:
The answer to this is,1/4.