The knitting club sold 40 scarves and hats at a winter festival and made 700 from the sales. They charged 18 for each scarf and $14 for each hat. If s represents the number of scarves sold and h represents the number of hats sold, which system of equations represents the constraints in this situation? a. {40s+h=700 18s+14h=700} b. {18s+14h=40 s+h=700} c. {s+h=40 18s+14h=700} d. {40(s+h)=700 18s=14h}

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.

c

step-by-step explanation:

(1,-1) i hope this

step-by-step explanation: