I need to know unknown value 9 is 25 % of what number

there are 20 students in the group, 15 from them are athletes. it is taken for competition 10 students. find the probability that 10 students are 5 athletes.

Cuanto es la mitad de 2/8

What is the value of the 8 and 48?

If the smaller of two consecutive intergers is subtracted from two times the larger then the result is 17. find the intergers

A high school debate team is made up of 9 boys and 7 girls. Their coach is going to choose four of them to go to a competition. 1) In how many different ways can the coach choose 3 girls and 1 boy to go?

Solve the system by substitution. -8x - y = 30 -2y = x

Mary owns a small business. She spent $4,500 to get the business started. She has noticed that her monthly operating costs have been consistent. After five months, she has spent a total of $5,250 in start-up costs and monthly operating costs.

Steve's savings account has a balance of $1287. After 4 years, what will the amount of interest be at 6% compounded semiannually?

A cake recipe calls for 559 grams of flour. about how many pounds of flour do you need? Using conversion factors.

Emma kept track of the number of puzzles solved during the past 10 days. She realized that she didn't solve any puzzles in the last 2 days. She graphed the data using a line plot.