Find the standard deviation marks obtained 0-10l0-20l0-30l0-40l0-50l0-60] and no of students l8l20l40l80l92l100l please fast solve this

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

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