roberta is 6 times danielles age. in 12 years, roberta will only be 2 times danielles age. how old is danielle now?
1 answer:
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Step-by-step explanation:
check the picture below.
if ∡F = 90° and ∡D = 30°, then the ∡A = 60°, meaning the triangle is a 30-60-90 triangle and therefore we can use the 30-60-90 rule as you see in the picture.
