Apiggy bank contains only quarters and dimes, and there is a total of 80 coins. if the value of the coins = to $15.20, how many quarters and dimes are in the piggy bank?

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?

Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10