A parasail is 1/20 of a meter above the water. Then, after 10 minutes, the parasail is 1/50 of a meter above the water. What is the change in height?

To find the change in height, we need to subtract the initial height from the final height.

The initial height is 1/20 of a meter above the water.
The final height is 1/50 of a meter above the water.

The change in height is: Final height - Initial height = (1/50) - (1/20).

To subtract these fractions, we need to find a common denominator. The least common multiple of 20 and 50 is 100.

(1/50) - (1/20) = (2/100) - (5/100) = (2 - 5)/100 = -3/100.

Therefore, the change in height is -3/100 of a meter above the water.

To find the change in height, we need to subtract the initial height from the final height.

Initial height: 1/20 of a meter
Final height: 1/50 of a meter

Change in height = Final height - Initial height

Change in height = (1/50) - (1/20)

Now we need to find a common denominator for the fractions, which in this case is 100.

Change in height = (2/100) - (5/100)

Simplifying the fractions:

Change in height = (2 - 5)/100

Change in height = -3/100

Therefore, the change in height is -3/100 of a meter.