Polygon ABCDEF is translated 12 units to the left to create polygon A′B′C′D′E′F′. If DE = 7 units, what is D′E′ ?
2 answers:
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Answer:
b
Step-by-step explanation:
Evaluate using the definition
n =
where n ! = n(n - 1)(n - 2)(n - 3)..... × 3 × 2 × 1
Given
9
=
=
=
Cancel 6.5.4.3.2.1 on numerator and denominator, leaving
=
=
= 84 → b
