Iwill brainliest plz !
(a) surface a and b are identical trapezoids. what are the lengths of the bases of the trapezoids? what is the height?
(b) surfaces a and b will be painted blue. what is the total area that will be painted blue?
(c) the edges of the trapezoids need to be sanded. a piece of sandpaper advertises that it can sand up to 80 cm. will one piece of sandpaper be enough to sand the edges of one trapezoid? explain.

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events