An auditorium has 20 seats. there are 20 seats in the first row, 21 seats in the second row, 22 seats in the third row, and so on. how many seats are there in all 20 rows.

A parachutist's rate during a free fall reaches 162 kilometers per hour. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during 20 seconds of free fall? Don't round answers.

Your friend has a bag of 20 marbles. Seven are blue, four are red, two are green, and three are yellow. If the rest are white, what percent of the marbles are white?

A pet store has 7 cats. Here are their weights (in pounds). 5, 10, 11, 8, 16, 16,5 Find the mean weight of these cats. If necessary, round your answer to the nearest tenth. pounds Х 5 ?

Circle the correct responses to describe the representations of each situation. Celine worked 32 hours last week and earned $232.

Samantha deposit 300 in an account that earns an annual interest rate of 2.5 after nine months she computes the simple interest. What mistakes did Samantha make?

Does any on know what prime and composite mean

Centerville Middle School spends $11 for every workbook it buys. At most how many workbooks can Centerville Middle School buy if it has $22 to spend?

The ratio of the surface areas is. If the surface area of the windows of the model is 100 square inches, the surface area of the windows of the building is square yards.

Find the perimeter of the rectangle for my last question

Mark all true statements. Group of answer choices If a, b, q and r are integers and a = bq + r, then gcd (a, b) = gcd (b, r). To test whether 101 is prime, you only need to divide it by 2,3,5 and 7.