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Vika [28.1K]
3 years ago
10

The sides of ΔDEF are d, e, and f. If the lengths of d = 12 and e = 19, what are the possible lengths of f? ANSWERS: A) 7 < f

< 19 B) 7 < f < 31 C) 12 < f < 19 D) 12 < f < 31
Mathematics
1 answer:
elixir [45]3 years ago
6 0

Answer:

B

Step-by-step explanation:

There are two cases: Either f is the longest side or f is the shortest side. If we look at the first case, f < 12 + 19 which means f < 31. The second case tells us that 12 + f > 19 which means f > 7 so the answer is 7 < f < 31.

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