Arjun is admiring a statue in Arcadia Park from 7 meters away. If the distance between the top of the statue to Arjun's head is 8 meters, how much taller is the statue than Arjun? If necessary, round to the nearest tenth.

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David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0