Christopher added seven-elevenths of a cup of flour to the chocolate cake. He added three-elevenths of a cup of flour to the strawberry cake. How much more flour was needed for the chocolate cake?

15 points ! ~ see if you know the answer to both you!

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Through non-collinear points there is exactly one plane.