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Today at 4:12 AM
Mathematics

Answered

Need help with this geometry poblem

Need help with this geometry poblem class=

Answer :

Today at 4:17 AM

Answer:

17.5

Step-by-step explanation:

Because the lines of the trapezoid are parallel that means that side ratios are similar mainly: BC/AB = DE/EF

Which yields: DE = CB * EF/ AB = 18.5 * 8.5 / 9 ~ 17.5

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