Gretchen and ezia received equal scores on a test made up of multiple choice questions and an essay. gretchen got 18 multiple choice questions correct and received 19 points for her essay. ezia got 15 multiple choice questions correct and received 31 points for her essay. how many points was each multiple choice question worth? enter your answer in the box.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.