Tutors Answer Your Questions about Average (FREE)
Question 367045: On Tuesday, 20 of the 25 students in an algebra class took a test and their average was 86. On Wednesday, the other 5 students took the test, and their average was 81.What was the average for the entire class?
(A) 81.8 (B) 82 (C) 83.5 (D) 85 (E) 87
Click here to see answer by mananth(12270)  |
Question 367083: p: The average of x, y, and 8 is 5.
q: The sum of x and y is 8.
Based on statements p and q above, which of the following must be true for
all values of x and y?
I. If p is true, then q is true.
II. If p is true, then q is not true.
III. If p is not true, then q is true.
(A) I only (B) II only
(C) III only (D) II and III only
(E) I, II, and III
Click here to see answer by Jk22(389)  |
Question 367936: If I scored an average of 88% on 3 tests which count for 75% of my overall grade and I scored 95% on all my labs which count 25% towards my overall grade, assuming I have 1 more test and no more labs, what do I need to score on that final test to have an overall score of 91%
Click here to see answer by scott8148(6628)  |
Question 368607: Tom has taken 5 of the 8 equally weighted tests in his
U.S. History class this semester, and he has an average
score of exactly 78.0 points. How many points does he
need to earn on the 6th test to bring his average score
up to exactly 80.0 points?
Click here to see answer by scott8148(6628)  |
Question 368820: A bamboo plant is growing 1 foot per day. When you first measure it, it is 4 feet tall. Write an equation to describe the height y, in feet, of the bamboo plant x days after you measure it. What is the y-intercept? What is the meaning of the y-intercept in this problem?
Click here to see answer by mananth(12270)  |
Question 369651: Hi. I hope you can help me. This is for 10th grade regents math homework. Here is the quesion. "Through a given point P, on a plane, how many planes can be drawn that are perpendicular to that plane?"
A) 1
B) 2
C) infinitely many
D) none
Please email the answer to me and if you can explain how you got it. Thanks :)
Click here to see answer by edjones(7569)  |
Question 369793: The Lookout Mountain Incline Railway in Chattanooga, Tennessee, is the steepest railway in the world. A section of the railway has a slope of about 0.73. In this section, a vertical change of 1 unit corresponds to a horizontal change of what length? Round the answer to the nearest hundredth.
Click here to see answer by neatmath(300)  |
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