A right triangle has side lengths of 4 cm and 5 cm. What is the length of the hypotenuse? (pythagorean theorem)

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?