Question

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.(4 points)
BoldItalicUnderlineIncrease indentDecrease indentFormula keypad
make it sound like a 12 year old wrote it

Answer 1

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.(4 points)
make it sound like a 12 year old wrote it

Answer 2

To find Teresa's percent error, we first need to know the formula for calculating percent error:

\[
\text{Percent Error} = \left( \frac{\text{Estimated Value} - \text{Actual Value}}{\text{Actual Value}} \right) \times 100
\]

Now, let's plug in the values. Teresa estimated the height of the giraffe to be 18 feet, but the actual height is 16 feet. So:

- Estimated Value = 18 feet
- Actual Value = 16 feet

Now we can do the math step by step:

1. Subtract the actual value from the estimated value:
\[
18 - 16 = 2
\]

2. Now, we need to divide this difference by the actual value:
\[
\frac{2}{16} = 0.125
\]

3. Next, we multiply by 100 to convert this to a percentage:
\[
0.125 \times 100 = 12.5
\]

So, Teresa's percent error is **12.5%** when rounded to the nearest tenth.

In conclusion, Teresa's percent error in estimating the height of the giraffe is **12.5%**!

Answer 3

To figure out Teresa’s percent error in estimating the height of the giraffe, we can use this formula:

\[
\text{Percent Error} = \left( \frac{\text{Estimated Value} - \text{Actual Value}}{\text{Actual Value}} \right) \times 100
\]

1. **Identify the values**:
- Teresa’s estimate: 18 feet
- Actual height of the giraffe: 16 feet

2. **Calculate the difference**:
\[
\text{Difference} = \text{Estimated Value} - \text{Actual Value} = 18 - 16 = 2
\]

3. **Divide the difference by the actual value**:
\[
\frac{2}{16} = 0.125
\]

4. **Convert to a percentage**:
\[
0.125 \times 100 = 12.5
\]

So, after doing the math, we find that Teresa’s percent error is **12.5%** when we round it to the nearest tenth.

To sum it up, Teresa thought the giraffe was 18 feet tall, but it was actually only 16 feet tall, making her percent error **12.5%**!