A system of equations is shown below. Which method eliminates one of the variables? A - Multiply equation B by 3 and add the result to equation A.
B - Multiply equation B by 5 and equation A by 4 and add the results together.
C - Multiply equation A by -1/3 and add the result to equation B.
D - Multiply equation A by 2 and equation B by -6 and add the results together.

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.