An inlet pipe can fill an empty swimming pool in 5 hours, and another inlet pipe can fill the pool in 4 hours. How long will it take both pipes to fill the pool?

Round 2169421 to the nearest ten thousand

The speed of a roller coaster depends on the height it drops from. Which expression represents the speed of a roller coaster if it drops from a height of 200 feet? A. speed (200) B. 200 (speed) C. 200-speed D. speed-200

For a sine function with amplitude = 0.75 and period = 10, what is y (4) ?

1 over 3 + 2over 5) x 2 over 3

Gil's aunt cut his birthday cake into 32 equal pieces. Eighteen pieces were eaten at his birthday party. What fraction of the cake was left? A. 7/16 B. 9/16 C. 7/12 D. 9/14

A softball is thrown straight up, reaching a maximum height of 20 meters, what is the ball's approximate vertical speed when it hits the ground?

What is the radius of a circle with a sector area of 7 ft. and an arc whose measure is 70°

Mark, Carrie, Max and Jane are doing a probability experiment in math class. They flip a coin 200 times and record their results. Heads: 120 Tails: 80 Question 1 on their lab sheet asks for the experimental probability of flipping heads.

Jim has 4 New York quarters, 3 Pennsylvania quarters, and 3 Virginia quarters in his pocket. What is the probability that he will get a Pennsylvania quarter followed by a Virginia quarter when he pulls two quarters out of his pocket?

Delia worked 45 minutes on her oil painting. She took a break at 10:35 a. m. At what time did Delia start working on her painting