PLEASE HEL Can the following be assumed from a diagram?

Perpendicular lines and right angles

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42

What is the area of the wall surface of a room that is 16’ x 18’ with 9 ceilings?