Destiny needs to prepare some props for Friday afternoon's pep rally. She is placing red tape along the diagonals of 3 identical square pieces of wood. One of the square props is shown below. Destiny uses a meter stick that is accurate to the millimeter to measure the pieces of tape. Which expression is equal to the length of tape, in centimeters, that Destiny will use to prepare the 3 props?

518,400

step-by-step explanation:

the area is multiplying all the given measurements together.

40 * 18 * 30 * 24 = 518,400

the answer is b

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)