Pythagorean Triplets are sets of three whole integers (i. e., no decimal or fractional numbers included) that fit the Pythagorean Rule c2  a2  b2 . Determine whether the following sets of numbers are Pythagorean Triples. Write yes or no for each set of numbers.
a) 8, 15, 17 b) 15, 20, 25 c) 20,48,52
d) 2,9,11 e)39,80,89

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out