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11 April, 19:15

On a recent test, Shawna was given the following problem:

A right triangle has side lengths 7 meters and a hypotenuse of 25 meters. The other side is labeled a.

Shawna's work is shown below:

1. a2+72=252

2. a2+14=50

3. a2=36

4. a=6 m

In which step did Shawna make an error?

Step 1. She incorrectly applied the Pythagorean theorem.

Step 2. She incorrectly squared the numbers.

Step 3. She incorrectly isolated a2

Step 4. She incorrectly solved for a.

+2
Answers (2)
  1. 11 April, 19:29
    0
    Step 2

    Step-by-step explanation:

    She multiplied by 7 and 25 by 2 instead of 7x7 and 25x25
  2. 11 April, 19:44
    0
    Step 2. She incorrectly squared the numbers.
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