Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 83: Mary's bowling score was within 10 pins of her average score of 105. I need to express this statement in terms of an inequality involving absolute value. I don't need to slove it. Just find out the inequality.
Click here to see answer by ichudov(404)   |
Question 253: Hi. I have another question regarding time:
The number N of guests that arrive at a mall food court each hour can be approximated by N=-12x(square) + 110x + 35, where x is the number of hours after 11:00 am. At what times, to the nearest minute, are 200 guests per hour arriving at the food court?
Thanks
Click here to see answer by whenindoubt(13)  |
Question 443: In a college, some courses contribute more towards an overall GPA than other courses. For example, a science class is worth 4 points; History is worth 2 points; Math is worth 3 points; and English is worth 3 points. The values of the grade letters are as follows, A=4, B=3, C=2, D=1, F=0. What is the GPA of a student who made a "c" in Trigonometry, a "B" in American History, an "A" in Botany, and a "B" in Microbiology?
Click here to see answer by AnlytcPhil(958) |
Question 1373: 1) Sue is both the 50th best & the 50th worst student at her school. How many
students attend her school ?
2) In a race from point X to point Y & back, Jack averages 30 miles per hour to
point Y & 10 miles per hour back to point X. Sandy averages 20 miles per
hour in both directions. Between Jack & Sandy, who finished first ?
Click here to see answer by usyim88hk(157) |
Question 1831: I know this is not algebra but if you can answer that would be great.
A uniform rod with a 3.0 m length and a mass of 14.0 kg is supported by a hinge at its left end and held in a horizontal position. A mass of 6.0 kg is attached to the rod 0.36 m from the hinge. A second mass of 7.5 kg is attached to the rod 2.80 m from the hinge. (A) Find the moments of inertia for each of the three masses about an axis at the hinge. (B) At the instant the right end of the rod is released, what is the net torque acting on this system? (C) What is the angular acceleration of this system the instant it is released?
Click here to see answer by khwang(438) |
Question 1831: I know this is not algebra but if you can answer that would be great.
A uniform rod with a 3.0 m length and a mass of 14.0 kg is supported by a hinge at its left end and held in a horizontal position. A mass of 6.0 kg is attached to the rod 0.36 m from the hinge. A second mass of 7.5 kg is attached to the rod 2.80 m from the hinge. (A) Find the moments of inertia for each of the three masses about an axis at the hinge. (B) At the instant the right end of the rod is released, what is the net torque acting on this system? (C) What is the angular acceleration of this system the instant it is released?
Click here to see answer by Ne0(6) |
Question 2465: Can you help me with this word problem that I am struggling with?
The distance D between a fixed spring and the floor is a linear function of the weight w attached to the bottom of the spring. The spring is 12 inches from the floor when the weight is 2 grams, and the spring is 7 inches from the floor when the weight is 4 grams. Write D as a linear function of w.
Click here to see answer by khwang(438) |
Question 2700: Can someone smarter than me answer this question?
Thank You
You have administered a standardized test of manual dexterity to two groups of 10 semi skilled workers. One of these two groups of workers will be employed by you to work in a warehouse with many fragile items. The higher the manual dexterity of a worker the less likelihood that worker will break significant inventory. Because of a unique contract you must hire all 10 employees from one of the two groups and none of the employees from the other.
Group A Scores
98
85
30
66
99
95
57
62
99
100
Group B Scores
64
81
62
88
82
79
90
81
85
79
You must decide which group to choose. Choose at least two measures of central tendency and at least one measure of dispersion for each group and use those to make your choice. Be sure to justify your choice
Click here to see answer by longjonsilver(2297)  |
Question 3572: Ben and Ann are among 7 contestants from which 4 semifinalists are to be selected. Of the different possible selections, how many contain neither Ben nor Ann?
(A) 5
(B) 6
(C) 7
(D) 14
(E) 21
Click here to see answer by khwang(438) |
Question 3921: Of the z students at a certain college, x are studying French and y are studying German. If w are studying both French and German, which of the following expresses the number of students at the college not studying either French or German ?
(A) z + w – x – y
(B) z – w – x – y
(C) z – w – x + y
(D) w + x + y – z
(E) w – x – y – z
Click here to see answer by longjonsilver(2297) |
Question 4418: A woman and her husband hosted a party for four other couples. The hostess asked everyone to shake hands and introduce themselves to each other. Of course, no one shook hands with his or her spouse. At some point, the hostess stopped them and asked each person how many hands he or she had shaken. Each person gave a different response. Whar was the response of her husband?
Click here to see answer by khwang(438) |
Question 4706: The Arnold Inn offers two plans for wedding parties. Under plan A, the inn charges $30 for each person in attendance. Under plan B, the inn charges $1300 plus $20 for each person in excess of the first 25 who attend. For what size parties will plan B cost less? (Assume that more than 25 guests will attend.)
Click here to see answer by Abbey(339) |
Question 5694: This is my second time using this section-the first response was really helpful, so thanks in advance.
My problem is a word problem dealing with fractions with variables.
One person can do a job in 8 hours. A second person can do it in 12 hours. If the first person works 2 hours less than the second, how many hours will it take them working together?
*I set up a table with the first person's work rate at 1/8 multiplied by the time h-2, and the second persons work rate at 1/12 multiplied by the time h. From there, I can't seem find what the problem is looking for.
Click here to see answer by prince_abubu(198) |
Question 6676: The formula that i was given is: 1020 sqrt P (1-.01 sqrt P)=G. If P is the population in thousands, this formula is the amount of water in gallons per minute the city needs......
Question: A city had a population of 43,250 people five years ago. Since then the population increased by 2250 people. How many more gallons per minute had to be added to the city's pumping capacity?
Click here to see answer by Earlsdon(4900) |
Question 6684: You already answered one of my other questions like this, but i'm not sure what to do about this one. I've asked a couple people what they thought that i should do, and they both gave me different ideas of how to do the problem..so i have two different answers that don't look so right....so heres my question and answer if you would like to help me again. THanks.
My question says to remember the formula 1020 sqrt P (1-.01 sqrt P)=G. If P is the population in thousands. this formula is the amount of water in gallons per minute the city needs.
Question: A city has about 37,550 people. How many gallons per minute must the city's pumps be able to supply?
My two answers: 185356.19 or 37937.5
Click here to see answer by Earlsdon(4900) |
Question 7042: Probability problem:
There are 5 red and 4 black balls in a box. If you pick out 3 balls without replacement, what is the probability of getiing at least one red ball?
I have tried so far: P(5/9) + P(4/9) - (3/9)= (6/9)≈ 2/3
Click here to see answer by longjonsilver(2297) |
Question 7063: Half the perimeter of a garden is 18 feet. The garden is 8 feet longer than it is wide. If W= the width in feet and I= the length in feet, which system must be true?
a.) 1/2(l+w)=18
l=w+8
b.) 1/2(l+w)=18
w=l+8
c.) l+w=8
l-w=18
d.) l-w=8
l+w=18
This question is extremely confusing, so would you mind helping me with it? Thanks!
Click here to see answer by Earlsdon(4900) |
Question 7667: I have two problems that I am having trouble with. Actually I have 5 but these are the hardest. (I think )
BOOM BOX SALES. A retailer of boom boxes knows that at a price of q dollars each, he can sell 900 - 3q boom boxes per month. Find a polynomial that represents the monthly revenue for the boom boxes? How many boom boxes will he sell if the price is $300 each?
I have no idea on this one.
I also have another one....
Square lot. Sam lives on a lot that he thought was a square 157 feet by 157 feet. When he had it surveyed, he discovered that one side was actually 2 feet longer than he thought and the other was actually 2 feet shorter than he thought. How much less area does he have than he thought he had.
I have no idea on this one either. Any help would be greatly appreciated. Thanks
Click here to see answer by glabow(165) |
Question 7660: In Baseball the pitcher's mound is 60.5 feet from home plate. The strike zone , or distance across the plate, is 17 inches. If a pitcher throws a baseball 90 miles per hour, how many seconds does it take for the baseball to reach home plate? How long is the ball in the strike zone?
Click here to see answer by Earlsdon(4900) |
Question 7998: Can you please help me? I am trying to help my daughter with 8th grade algebra. Her question is this/
The sum of three numbers is 120. the second of the numbers is 8 less than the first, and the third is 4 more than the first. What are the first number(s)?
This sounds like a riddle to me
Click here to see answer by Earlsdon(4900) |
Question 7997: I cannot understand how to even start this problem.
Each car in a fleet of 24 rental cars is either red or blue. There are 3 more blue cars than twice the number of red ones. How many red ones are there?
Click here to see answer by CharStar(110) |
Question 7997: I cannot understand how to even start this problem.
Each car in a fleet of 24 rental cars is either red or blue. There are 3 more blue cars than twice the number of red ones. How many red ones are there?
Click here to see answer by Earlsdon(4900) |
Question 7996: I cannot understand how to even start this problem.
Each car in a fleet of 24 rental cars is either red or blue. There are 3 more blue cars than twice the number of red ones. How many red ones are there?
Click here to see answer by CharStar(110) |
Question 7994: My parents and I have tried to come up with an answer to this word problem, but we have all decided that there is not enough information to answer it. I would really appreciate it if someone could help me with this:
"The Penzolas are planning to use square tiles to tile a kitchen floor that is 18 feet long and 15 feet wide. Each tile covers one square foot. A carton of tiles costs $18. How much will it cost to cover the entire kitchen floor?"
I think it is necessary to know how many tiles come in one carton, but I am not sure.
Thanks for your help!
Click here to see answer by glabow(165) |
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