A student was asked to use the formula for the perimeter of a rectangle, P = 2ℓ + 2w, to solve for ℓ. The student came up with a

Question

Artist 52 [7]

3 years ago

9

A student was asked to use the formula for the perimeter of a rectangle, P = 2ℓ + 2w, to solve for ℓ. The student came up with a

n answer, P − 2w = 2ℓ. What error did the student make? Complete the explanation. Then solve for ℓ.

Mathematics

1 answer:

VARVARA [1.3K] · Answer 1 · 2022-04-03T20:02:50+03:00

VARVARA [1.3K]3 years ago

7 0

So the student was correct in subtracting 2w from both sides, however, he cant solve for l unless he divides 2 on both sides so the l becomes by itself :)