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a librarian put 30 books back on the shelves before lunch. of the books, 10 were non-fiction. what is the ratio of the number of non-fiction books to the total number of books the librarian put away before lunch?
a. 1 to 3
b. 1 to 2
c. 2 to 1

1 to 3

Step-by-step explanation:

Out of 30 books, 10 were non fiction. So the ratio of non fiction books to total number of books is 10 to 30

10 to 30 can be simplified to 1 to 3.

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices