If a quadrilateral does not have two pairs of opposite sides that are parallel, then it may be a
a. parallelogram
b. rhombus
c. trapezoid
d. square
e. rectangle

6(2x+y)+2(x+4y) how can i solve this

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

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.