1. what is c / 3; when c = 42 2. what is 5(9 + d) - 6; when d = 3
3 what is a + 7; when a = 23
4. what is r(r^2)(t); when r = 2, and t = 5

please help asap!!

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation