There are 6 times as many dogs as cats. if the total number of dogs and cats is 21, how many dogs are there?

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Find the distance between (0,5) & (-4,2)

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?