At a local high school, 40% of all students who are enrolled in precalculus finish the semester with an A in the class. Of the students who finish precalculus with an A, 80% go on to receive an A in calculus. Of the students who do not finish precalculus with an A, only 30% of the students go on to receive an A in calculus. What is the probability that a randomly chosen student from this school receives an A in both precalculus and calculus?

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

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the answer should be a. snail

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"