there are 20 balls numbered 1 to 20. in a bag. if a person selects one at random, what is the probability that the number printed on the ball will be a prime number greater than 5

A group of 92 students went on a field trip to a nature preserve. When they arrived they were separated into 4 groups. If each group had the same number of students, how many students were in each group

ethan and david are brother. ethan is three years older than david, and the sum of their ages is 17, how old is david?

If the scale factor of my dilation is 4, what is happening to my shape?

20 divided by 5 plus 4 • 2

A boy standing on the shore of a lake 1 mile wide wants to reach the Golden Arches 3 miles down the shore on the opposite side of the lake.

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 520 and a standard deviation of 180. The grading process of this year's exam has just begun.

What is 425plus 389 minus 125

Felipe rides the bus 9 times a week. He pays $1.75 each time he rides the bus. How much money does Felipe spend to ride the bus each week?

572 to the nearest hundred

What is 1/2m inches in feet as and indicated expression