Find the geometric mean x of each pair of numbers. If necessary, give the answer simplest radical form.
4. 5 and 20
12
10
25
100

At a point on the ground 50 meters from the foot of a tree, the angle of elevation to the tree is 48°. find the height of the tree to the nearest meter.

If an athlete can bike 6 miles in 25 minutes, how many miles will he bike in an hour and half if he continues to bike at the same rate?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?