The prime factorization of a number is 2x2x3x7x7. Is the number a perfect square? how do you know ?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

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?