A​ salesperson's commission rate is 4%. What is the commission from the sale of 44,000 worth of​ furnaces? Use pencil and paper. Suppose sales would double. What would be true about the​ commission?

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

explanation:

step-by-step explanation: