I'll give brainliest! whats the value of r that makes the equation true? r+(-0.16)=0.37 a)-0.53 b)-0.21 c)0.21 d)0.53

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

What is the area of the trapezoid shown ?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60