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Can someone pls help

Can someone pls help-example-1
User Coolie
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1 Answer

6 votes

Answer:

x=5

Explanation:

An isosceles trapezoid has two pairs of congruent base angles. This means angle F has to equal angle E. So we have 2x^2+21=3x^2-4. Move the variables to one side and we get 25=x^2. Square root both sides and we get two values x=5 and x=-5. Since angles cannot necessarily be negative, we only want the positive value. In this case x=5.

User Suite Resources
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