Crystal has 121 compact discs that she wants to put into boxes. Each of the
boxes that she brought home holds 25 discs. How many of these boxes will
she need for all of her discs?
O
O
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A. b+ 25 = 121
B. 121 - b = 25
c. 25b 2 121
D. 25b < 121

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

y + 11 = (1/4)(x + 16)

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a