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15.07.2019 •
Mathematics
20 points and brainliest to the fastest, right answer! answer asap: use cross products to determine which of the following proportions are equivalent to each other. select all situations that apply. a/b=c/d a/c=b/d a/d=c/b b/a=d/c d/a=c/b
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Ответ:
cross multiply
ab -ad +bc -cd = ab +ad -bc -cd
cancelling ab and -cd, on both sides of eqn
combining like terms
-2ad = -2bc
dividing both sides by (-2)
ad =bc
dividing both sides by (bd)
a/b = c/das required
Ответ:
the answer is A on edge i took the test .
Step-by-step explanation: