There were 1125 books sold last week at Sid's Bookstore. The circle graph below summarizes these books by genre. The central angle for the Self-Help slice is 80.64. How many of the books sold were Self-Help books?

Number of self-Help books sold = 252 books

Step-by-step explanation:

Total books sold last week = 1,125

Central angle for the Self-Help slice = 80.64°

Total angle in a circle = 360°

How many of the books sold were Self-Help books?

Number of self-Help books sold =

Central angle for the Self-Help slice / Total angle in a circle × total number of books sold

= 80.64° / 360° × 1,125

= 0.224 × 1,125

= 252

Number of self-Help books sold = 252 books

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!