Question

Analyzing Work

Did Bryn come to the correct conclusion? If not
explain her error.
Bryn checked the measures of the stairs to make sure
they formed a right triangle. The measures of the steps
were 5 in., 13 in., and 12 in.
Bryn's work is shown below:
1 5² + 13² = 12²
2. 25 + 169 = 144
3. 194. 144
Conclusion: Not a right triangle
No. In step 1 she did not apply the Pythagorean
theorem correctly.
C No. In step 2 she did not square each term
correctly
No. She should have used the outcome from step
3 to conclude that the triangle is a right triangle.
Yes, Bryn came to the correct conclusion

Answer 1

a

Explanation:

Answer 2

she did not apply the Pythagorean theorem correctly

Explanation:

It should be
`5^(2) +12^(2) =13^(2)`

the sum of the squares of smaller sides equals to the square of the longest side. So in this case it is a right triangle: 25+144=169