Determine the number of girls in a math class with 91 students, if there are 180 girls for every 184 boys?

explain how you got answer

45

Step-by-step explanation:

180 + 184 = 364

If there are 180 girls for every 184 boys, then there are 180 girls for every 364 students.

The fraction of girls is 180/364 = 45/91

If a class has 91 students, and the fraction of girls is 45/91, then there are

45/91 * 91 = 45 girls

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true