gisela

Find the sum of the first 60 terms of the arithmetic sequence whose first term is −15 and whose common difference is 7.

A tennis ball is dropped from a height of 7 ft. If the ball rebounds 2/3 of its height on each bounce, how far will the ball travel before coming to rest? (Find the total distance that the ball will travel before it stops bouncing.) i need help i don't kn...

A car dealer will sell you a used car for $6,298 with $798 down and payments of $165.51 per month for 48 months. i found the total amount paid which is 8742.48 and interest paid is 2444.48 how do i find the interest rate?

In how many ways can a row of three contestants for a TV game show be selected from an audience of 350 people?

In how many ways can a full house of three jacks and a pair of twos be obtained from an ordinary deck of cards?

In how many ways can four aces be drawn from a deck of cards? (Order is not important.)

A boat travels 23 mph relative to the riverbank while going downstream and only 11 mph returning upstream. What is the boat's speed in still water?

A plane makes an 900-mile flight in 3 1/3 hours against a strong head wind, but returns in 50 minutes less with the wind. What is the plane's speed without the wind?