What is the sum of (1.3 * 10-7) and (-3.8 * 10-3) ?

a. 2.5 * 10-10

b. - 2.5 * 10-4

c. 3.8 * 10-3

d. - 3.8 * 10-3

There are 3 green apples and 8 red apples in a basket. (a) What is the ratio of all apples in the basket to green apples? (b) What is the ratio of red apples to all apples in the basket?

Reyna wants to mail a birthday package to her cousin. The post office told her it would take $5.70 in postage to send the package. Reyna has 3 75-cent stamps and 20 45-cent stamps.

What is the area of a circle with the diameter of 1.5?

Any has 2 rows of 4 sports trophies on each of her 3 shelves. How many sports trophies does Amy have?

Write the number in expanded form. seven hundred twenty-one thousand nine hundred four

A city which has a population of 250,000 has been experiencing a population decline of 5.5% every year. What will the population be in 9 years?

3 (4b - 2) = - 6 + 12b

Use the net to find the lateral area of the prism 8cm 15cm 17cm 11cm

For each stapler, there are 25 staples. Mr. Henry has s staplers. How many staples does Mr. Henry have?

Is 1/4 greater or less than 8/10