jonathans class has 30 boys, of the students of his class, 60 percent are girls. how many girls are in the class

Using coupons, you spend $135 grocery shopping. this is 75% of the total retail price of the groceries. how much would you have spent if you had not used the coupons?

Which answer correctly estimates the quotient of 102.02 : 4.011? a. about 25 b. about 250 c. about 2,500 d. about 25,000

A student uses 3.14 for π to calculate the approximate circumference of a circle, 150.72 meters. Given this, find the approximate area of the circle. Use 3.14 for π.

Gavin plays a soccer video game he earns 2 stars for every goal he scores and loses 1/2 star every time he misses a goal He scores 7 goals and misses 6 goals. How many stars does he have

The half-life of radium is 1690 years. If 20 grams are present now, how much will be present in 250 years?

Write a number with the digit 8 in the tens place

A 4-foot-wide walkway surrounds a 10-foot square wading pool. What is the perimeter of the outside of the walkway?

Find the difference. (-ab+8a-5) - (-8ab-4)

Daryl hit a home run 8 out of 32 times. if he is at bat 224 times how many home runs will he hit

The sales tax for an item was $12.90 and it cost $430 before tax. Find the sales tax rate. Write your answer as a percentage.