A parallelogram has vertices at (−5, −5), (0, 1), and (5, −5). Which could be the fourth vertex of the parallelogram? Select all that apply. A (−10, 1)
B (0, −11)
C (5, 1)
D (10, 1)
E (−5, −11)

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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mean, 40.6

step-by-step explanation:

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