The length of a rectangle is twice its width. the perimeter of the rectangle is 90 cm. what are the length and width?

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

Which system of linear inequalites is represented by the graph?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2