A woman bought a horse for $800 and then sold it for $900. She bought it back for $400 and then sold it again for $600. How much did she gain or lose on these transactions?

a ruby throated hummingbird is about 4 in long and is it noted for its annual non-stop migration of 500 miles across the Gulf of Mexico and for the rabbit flopping of its wings some hummingbirds flap their wings 55 times per second if the

If 3gallon containers of paint are on sale for 15.39, what is the price for 2gallon container

Simplify 2x+3y2-2 (x+y)

A floor of a large hall is in the shape of a rectangle. It is to be covered with square tiles that each have an area of 16 square feet. If the length of the floor is 52 yards and width is 40 yards, how many tiles are needed to cover the floor?

A teacher wants to compare the mean geology scores of two different classes. She is testing the null hypothesis that there is no difference in the population mean scores of the two classes. The difference of the sample means is 51.4.

Susan tossed a die 1,194 times. Which of the following would be a good estimate of the number of times she got the number 3 on the die?

What is 2√-108 simplified expression

An adult elephand drinks about 325 liters of water each day. is the number of days the water supply lasts proportional to number of liters of water the elephant drinks?

Which irrational number can be added to pi to get a sum that is rational? 1/pi -1/pi -pi pi

Andy runs 436.8 meters in 62.08 seconds. I'd Andy runs at a constant speed, how far does he run in one second? Give you answer to the nearest tenth of a second.