a scientist has grams of a radioactive substance. write an expression that shows the amount of the substance that remains after one half life.

What is a rectangles dimensions if the perimeter is 20 and the area is 24?

University Law School accepts 2 out of every 7 applicants. If the school received 959 applications, find how many students were accepted

Find the annual interest rate paid on this loan: interest=$75 principal=$5,000 time=3 months

The sum of five times a number and 25 is more than the number increased by 12. Which inequality represents this situation? A. x - 25 > 5x + 12 B. 5x + 25 > X + 12 C. 5x + 25 < x + 12 D. 5 (x + 25) > x + 12

A rectangular region is removed from another rectangular region to create the shaded region shown below. Find the area of the shaded region 4 mm mm 1 mm 15 mm

A scientist collected 7 water samples from local streams. Each sample was the same size, and she collected 0.7 liters of water in all. What was the volume of each water sample?

Write a story to represent what percent is 12 out of 25?

David estimates that he will have expenses totaling $24,870 for one year of college. He will receive $7,560 in grants. How much will David have to contribute each semester during this year?

What value of x makes this question true - 3/2x+1=x+7

Lindsay ordered twice as many blankets as she did quilts for the department store where she works. The order was for 129 items. How many blankets and how many quilts did Lindsay order?