If the teacher allowed the student in the previous question to improve their scores on all of the homework assignments, could they possibly earn a higher letter grade [using the following grading scale: 90-100 (A), 80-89 (B), 70-79 (C), 60-69 (D), 59 and lower (F)]?

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.