The vertices of DEF are D(-7,-2) E(-6, -6) and F(-1,-1). Find the coordinates of D' after a rotation of 270° about the origin. Write your answer as coordinates
(x, y).

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.