Question 723628: to earn a B in a course, you must have a final average of at least 80%. On the first three examinations, you have grades of 82%, 72% and 78%. If the final examination counts as two grades, what must you get on the final to earn a B in the course?
Write, solve and graph the following inequality: three times the sum of five and a number is at most 48
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
IF the final grade must be 80, then the sum of 5 grades, that is the three you already know and the two identical ones that comprise the final, must add up to 5 times 80. Add up the scores you know, subtract from 5 times 80, then divide by 2.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
|
|
|
