A cyclist rode at constant speed of 23 mph for 4 hours. Then, she decreased her rate of speed to 16 mph for 5 hours. How far did the cyclist ride in 9 hours?

A force of 72 pounds stretches a spring 2 inches. how much force is required to stretch the spring 3 inches?

Raj builds a side table in the shape of a cube. Each edge of the cube measures 30inches. Raj wants to cover the top and four sides of the table with ceramic tiles. Each tile has an edge length of 6inches. How many tiles will we need?

Jing and Bob are each invited to a party. From previous experience, it is known that there is a 95% probability that at least one of them will actually go to the party.

Three of the angles of a quadrilateral are 120° 48° and 92° what is the size of the fourth angle

A new machine can produce 5000 bolts in two - thirds the time required by the old machine. If it takes the new machine six hours to do this job, how long did it take the old machine?

What is x1/2 * x1/3 =

Adam drew two samw size rectangles and divide them into the same number of equal parts. He shaded 1/3 of one rectangle an 1/4 of the other rectangle. What is the west number of parts into which both rectángles could one divided

Two trains start heading toward each other from two cities, the distance between which is 720 km and meet right in the middle. The second train left 1 hour after the first train, but traveled at a speed 4 km/hour faster than the first train.

Divide X^2+77x+20 by x+9 what is the quotient and remainder?

Brass is made from a mixture of copper and other elements. A mixture that is 80% copper is combined with a mixture that is 60% copper, resulting in 100 pounds of brass that is 65% copper.