In a class 40%of students were girls. if the number of girls were 16 then how many students were in the class?

Me asap! what is the slope of this line? enter your answer in the box.

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how