Suppose a railroad rail is 5 kilometers and it expands on a hot day by 18 centimeters in length. approximately how many meters would the center of the rail rise above the ground?

  21.2 m

Step-by-step explanation:

The Pythagorean theorem tells you the second side of a right triangle with hypotenuse 2500.09 meters and one side 2500 meters will be ...

  height = √(2500.09² -2500²) = √450.0081 ≈ 21.2 . . . . meters

The rail will rise approximately 21 meters above the ground.

If the rail forms an arc of a circle, the center of the arc will be about 18 meters above the ground. Solving that involves some iteration (or a graphing calculator).

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

step-by-step explanation: 4 cause 2+2=4