Arc QVT measures 156°. Which statement must be true? Angles QRT and QST both measure 78°. Angles QRT and QST both measure 156°. Angle QRT measures 78° and angle QST measures 102°. Angle QRT measures 156° and angle QST measures 24°.
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The duration of a railway journey varies as the distance and inversely as the velocity; the velocity varies directly as the square root of the quantity of coal used, and inversely as the number carriages in the train.
In a journey of 50 km in half an hour with 18 carriages, 100 kg of coal is required.
64 kg of coal will be consumed in a journey of 42 k in 28 minutes with 16 carriages.
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A. Angles QRT and QST both measure 78°.
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