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sp2606 [1]
2 years ago
6

RSTU is an isosceles trapezoid with bases RS and TU. Find x and m/S if m/R=4x +11 and m/T=2x-5.

Mathematics
1 answer:
Lorico [155]2 years ago
8 0

\angle R and \angle S are supplementary by the same-side interior angles theorem, and \angle S \cong \angle T because of the properties of an isosceles trapezoid, meaning that \angle R and \angle T are supplementary.

4x+11+2x-5=180\\\\6x+6=180\\\\6x=174\\\\x=\boxed{29}\\\\\implies m\angle S=m\angle T=2(29)-5=\boxed{53^{\circ}}

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