exam Maths Puzzle Numerical Ability

One day, the temperature at 11:00 A.M. was 45°F, and by 2:00 P.M. the temperature was 63°F. What was the hourly rate of temperature change?

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square root 3 * square root x + 1 = square root 3x - 5 A highway makes an angle of 6 degree with the horizontal. This angle is maintained for a horizontal distance of 8 miles.

a. Draw and label a diagram to represent this situation