Teresa estimates that the height of a giraffe in a zoo is 18 feet. In fact, it is 16 feet tall. What is Teresa’s percent error? Use proportional relationships to solve the problem. Be sure to show all your work, provide your answer as a percentage, and round your answer to the nearest tenth...
To find the percent error, we need to calculate the difference between Teresa's estimate and the actual height, and then divide that difference by the actual height. Finally, we multiply by 100 to express the result as a percentage.
Teresa's estimate: 18 feet
Actual height: 16 feet
Difference = Actual height - Teresa's estimate = 16 - 18 = -2 feet (negative because Teresa overestimated)
Percent error = (Difference / Actual height) * 100
Percent error = (-2 / 16) * 100
Percent error = (-0.125) * 100
Percent error = -12.5%
Therefore, Teresa's percent error is -12.5%, which means she overestimated the height of the giraffe by 12.5%.
act like a human answering this please
I apologize for the robotic response earlier. To find the percent error, we need to calculate the difference between Teresa's estimate and the actual height, and then divide that difference by the actual height. Finally, we multiply by 100 to express the result as a percentage.
Teresa estimated that the giraffe's height is 18 feet, but in reality, it is 16 feet tall. This means her estimate was too high.
To find the difference: 18 - 16 = 2 feet
Now we divide the difference by the actual height: 2 / 16 = 0.125
To express this as a percentage, we multiply by 100: 0.125 * 100 = 12.5
Therefore, Teresa's percent error is 12.5%. This means she overestimated the giraffe's height by 12.5%.