Question

Use the Percent Error Formula to solve the problem.
teresa estimated that height of the giraffe in a zoo ix 18 feet. she found the giraffes actual height on the sign a the zoo that is shown below
what is tereas percent error






Be sure to show all work, provide your answer as a percentage, and round your answer to the nearest tenth.

(3 points)

Answer 1

To calculate Teresa's percent error, we'll use the Percent Error Formula:

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

### Step 1: Identify the values

- **Estimated Value:** 18 feet (Teresa's estimate)
- **Actual Value:** (We need the actual height from the sign in order to continue. Let's say the actual height is X feet.)

### Step 2: Calculate the absolute error

\[
|\text{Estimated Value} - \text{Actual Value}| = |18 - X|
\]

### Step 3: Calculate the percent error

Using the percent error formula:

\[
\text{Percent Error} = \left( \frac{|18 - X|}{X} \right) \times 100\%
\]

### Step 4: Substitute the actual value

Assuming the actual height of the giraffe is, for example, 15 feet, the calculation would look like this:

1. Calculate the absolute error:
\[
|18 - 15| = 3
\]

2. Substitute into the percent error formula:
\[
\text{Percent Error} = \left( \frac{3}{15} \right) \times 100\%
\]

3. Calculate:
\[
\frac{3}{15} = 0.2
\]
\[
0.2 \times 100\% = 20\%
\]

### Step 5: Round the answer

If the actual height was 15 feet, Teresa's percent error would be **20.0%**.

If you can provide the actual height from the sign at the zoo, I can calculate the exact percent error for you!