Amiddle school has 250 students. jenny surveys a random sample of 50 students and finds that 15 of these students picked math as their favorite subject. how many students at the school are likely to pick math as their favorite subject?

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Can someone me and explain..will award brainlest!

What is the length of ac in the given triangle?