Darrel divided 8,675 by 87. His work is shown below. Which answer choice correctly identifies the error Darrel made when dividing?

A. He made an error when multiplying.
B. He made an error when subtracting.
C. He forgot to place a zero in the quotient.
D. He did not make an error, his work is correct.

Subtracting.

Step-by-step explanation:

6-8 is not 8.

7,24

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4