There is a bridge that goes over the river below the Hartford Dam.
The distance to the bottom of the bridge changes along the bridge
span. The distance at point B is three times as high as it is at point
A. The distance at point C is twice as high as it is at point A, less
20 feet. The total of these distances is 160 feet. How far from the
top of the bridge to the bottom is each point?

step-by-step explanation:

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cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

b. ol

step-by-step explanation:

i got the answer right on edg.

congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.