exam Maths Puzzle Numerical Ability

help on this please,,thanks
x+1= sqrt x+7

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exam Other Question

Solve the problem. A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream. Two angles are complementary. The sum of the measure of the first angle and half of the second angle is 72.5*. Find the measures of the angles.
What is the measure of the smaller angle?
What is the measure of the other angle?