Question

What error did the student make in their work?

A) There is a calculation error (added, subtracted, multiplied or divided incorrectly).
B) BD is the midsegment and should be multiplied by 2, not AE.
C) BD is the midsegment and should be multiplied by 1/2, not AE.
D) AE is the midsegment and should be multiplied by 1/3.

Answer 1

B.

Explanation:

The error is on the first line:

4x + 20 = 2(3x + 5) is correct

- because AE = 2BD.

Answer 2

B

Explanation:

just swap around which one you multiply by 2 as they have multiplied the larger one by 2 instead of the smaller one.