what do i need on my final to get a 75 for the course?

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what do i need on my final to get a 75 for the course?

if the first 3 exams are worth 23% each and the grades are as follows 68,58,55 and the final is worth 31% what do i need for overall grade of 75?

2006-12-12 13:26:28 · 3 answers · asked by loretta p 1 in Science & Mathematics ➔ Mathematics

3 answers

You need to get all the questions right.

2006-12-12 13:29:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋

.23(68+58+55) + .31x = 75
.31x = 75 - .23(68+58+55) = 33.37
x = 33.37/.31 = 107.6

You can't reach 75 overall. You would need a better than perfect score. And from what I can see, the scores on the first three exams are going the wrong way.

2006-12-12 13:33:26 · answer #2 · answered by Northstar 7 · 0⤊ 0⤋

121.6%... sorry...

2006-12-12 13:30:03 · answer #3 · answered by Peeps 3 · 0⤊ 0⤋