Answer: 35%
1. 26 fiction books divided by all 40 books equals 65% fiction books.
2. Then do 100% - 65% to get 35%
OR
1. All 40 books minus 26 fiction books
= 14 nonfiction books.
2. Do 14 divided by 40 to get 0.35, = 35%
Step-by-step explanation:

The formula for circumference is C= 2(pi)(r)^2. Because diameter is double the radius, and the diameter is 8 ft, the radius is 4 ft. So, plug that into the equation, and you get: C=2(pi)(4)^2. The answer is 32 pi ft. If the question asks for the exact answer, keep the pi as it is, but if it says to round, multiply 32 by pi and round.
Answer:
y = 1/4 - 4
Step-by-step explanation:
This is because -4 is where the line intercepts with the y - axis while 1/4 is 1 up, over 3
This looks like scalar matrix multiplication. The idea here is to multiply the scalar 3 by each item inside the matrix.
Doing so leads to the answer [3 -12 15 -21]
Side note: I'm assuming the matrix given to you has 1 row and 4 columns.