8x+y=300the elevator in a trade center is moving down from a height of 300 feet. the equation above can be used to model the height of an elevator, y, above the lobby. where x is the time in seconds. if the ordered pair (x, y) satisfies the equation, what does (37.5,0) mean? a. an elevator stops at a height of 37.5 b. the elevator is moving down at a constant speed of 37.5 feet/seconds. c. the elevator moves 37.5 feet down from the lobby. d. the elevator takes 37.5 seconds to move down to the lobby.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it