You have a string. you can look at it, but not touch it. you cannot use any measuring device to measure it. how long is it?

Choose all answers that apply: a) ab and a’b’ are one the same line. b) quadrilaterals abcd and a’ b’ c’ d’ have the same perimeters. c) points a and a’ have the same coordinates. d) none of the above

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

If f(x)=x+7 and g(x)=1/x what is (fog)(x)