Misha’s group was asked to write an expression equivalent to 7y2z+3yz2-3 . when mr. chen checked their answers, he found only one to be correct. who had the correct answer? misha’s group student equivalent expression misha juan joe helena misha juan joe helena

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.