Which of the following sets of numbers could represent the three sides of a right
triangle?
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{54, 72,91}
{20, 22, 29}
{5, 12, 14}
{48,64, 80}

Use the matrix-column representation of the product to write each column of ab as a linear combination of the columns of a.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

Ithink i know it but i want to be sure so can you me out ?