math
posted by lucy .
An average score of 90 or above in a history class receives an A grade. You have scores of 90, 89, and 85 on three exams. Find the range of scores on the fourth exam that will give you an A grade for the course. (Let N stand for your score on the fourth exam.)
Respond to this Question
Similar Questions

math
Doug had scores of 80, 85, 75, and 80 on his first four exams in a course. a. Find the mean, median, and mode for these exam scores. b. Which “average” would Doug want the teacher to use in determining his grade? 
Math
Doug had scores of 80, 85, 75, and 80 on his first four exams in a course. a. Find the mean, median, and mode for these exam scores. b. Which “average” would Doug want the teacher to use in determining his grade? 
Statistics
5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? 
math
Suppose that you are taking a course that has three exams which count for threefifths of your grade and a final which counts for twofifths of your grade. On your first three tests your scores on were 75, 80, and 74. To get an B in … 
statistics
The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of … 
math
Suppose that you are taking a course that has three exams which count for threefifths of your grade and a final which counts for twofifths of your grade. On your first three tests your scores on were 84, 72, and 96. To get an B in … 
Math Statistics
Answer the following. Show your work to get credit. Exam scores are normally distributed with a mean of 81 and a standard deviation of 9. a) What is the minimum score one must have to be in the top 4% of the students taking the exam? 
JAVA PROGRAMMING
im new to java and this is my first assignment can anyone help me solving it: compile the class final grades, based on the students’ scores obtained in the classwork, midterm, and final exams. According to the course syllabus, the … 
algebra
A student has scores of 72, 78, and 87 on three government exams. What score does she need on a fourth exam to give her an average of 80 or better? 
Math
A class of 12 students has taken an exam, and the mean of their scores is 71. One student takes the exam late, and scores 92. After including the new score, what is the mean score for all 13 exams?