Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 171798: 3.Tom missed 6 out of 54 questions on a recent exam. What percent of the test did he get right?
23. A 45 pound weight will weigh how many kilograms? (round to nearest 1/10 kg if necessary)
45. The average hourly wage for hospital support staff in Washington rose last year by 2.3%. If the average wage this year is $10.55 per hour, what was the average wage last year? (round to the nearest cent if necessary)
10.If a 2 liter bottle of soda pop is used to give 5 ounce servings to children at a picnic,how many servings can be offered before the bottle runs out?
Click here to see answer by Mathtut(3670)  |
Question 171829: I need help with this word problem:
Alex can run 26 miles in 6 hours, Bethany can run 26 mies in 5 hours and carol can run 26 miles in 4 hours. If they start together and each run at their constant speeds, how long does it take for them to finish a total of 26 miles among the three of them? express your answer in as a common fraction in simplest form.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 172025: Hi can anyone help me with these two? I have been on them since early this morning and can't seem to get it. Actualy, there are 8 problems, but if I can get these two going, I think I can figure out the rest. I do appreciate any help you can give me.
Word problem:
The population of North America is growing rapidly. The equation that predicts this growth is -5.4x+y=372, where x is the number of years since 1980 and y is the population in millions of people. The population of South America is also growing rapidly. The equation that predicts this growth is -5.25x+y=242, where x is the number of years since 1980 and y is the population in millions of people.
1. According to these equations, what was the population of North America in 1980? In 2000? What will the estimated population be in 2010?
2. According to these equations, what was the population of South America in 1980? In 2000? What will the estimated population be in 2010?
Click here to see answer by josmiceli(19441)  |
Question 172037: A mother invests $3000 in a bank account at the time of her daughter's birth. The interest is compounded quarterly at a rate of 12%. What will be the value of the daughter's account on her twentieth birthday, assuming no other deposits or withdrawals are made during this period?
Click here to see answer by jojo14344(1513) |
Question 172090: I have been working on this math problem and I can't figure it out. I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!!
Complex Fracitons
Simplify.
1-2-1/x/x over 1-1/x
Click here to see answer by Alan3354(69443)  |
Question 172089: I have been working on this math problem and I can't figure it out. I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!!
Complex Fractions
Simplify.
a/b-a-b/a+b over a/b-a+b/a-b
Click here to see answer by stanbon(75887) |
Question 172086: I have been working on this math problem and I cant' figure it out and I was wondering if someone could help me? Please and Thank You!! I deeply appreciate it!!
Complex fractions
Simplify.
1+1/x-1 over 1+1/x^2-1
Click here to see answer by Mathtut(3670) |
Question 172147: Please help me I really do not understand what I need to do:
For a certain time period the ration of the dollar value of exports to the dollar value of imports for the Untied States was 2 to 3.If the value of exports during that time period was 48 billion dollars,then what was the value of imports.
Click here to see answer by stanbon(75887) |
Question 172453: 1. In this problem, we will analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open market. Often, the demand equation is found empirically (through experiment, or market research).
a. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. (Hint: Write an equation using two points in the form (x,p)).
Click here to see answer by stanbon(75887) |
Question 172529: I would appreciate any help on the below questions. I have tried to answer, but am not sure if this is correct.
The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this product is $300, and the supplier’s cost for a set of tile is $6 each. Let x represent the number of tile sets.
c. If b represents a fixed cost, what value would represent b?
d. Find the cost equation for the tile. Write your answer in the form C = mx + b.
For question C above I used b = 300. Is this correct?
for question D above I used C = -50x + 300 is this correct?
Click here to see answer by Mathtut(3670) |
Question 172627: Solve the problem that involves computing expected values in a game of chance.
A game is played using one die. If the die is rolled and shows a 2, the player wins $8. If the die shows any number other than 2, the player wins nothing. If there is a charge of $1 to play the game, what is the game's expected value?
Here are some thoughts on how to solve... not sure if I am thinking in the right direction:
Get a 2 the prob. is 1/6 and win $8.00 but pay $1 to play
not a 2 is 5/6 and owe a dollar
1/6*8/1= 8/6...4/3=1.33 - $1.00= $.33
Click here to see answer by stanbon(75887) |
Question 172628: A service that repairs televisions sells maintenance agreements for $11 a year. The average cost for repairing a television is $34 and 5 in every 100 people who purchase maintenance agreements have televisions that require repair. Find the service's expected profit per maintenance agreement.
Where to begin.... can't really figure this one out anyone to help please!
Click here to see answer by Mathtut(3670) |
Question 172640: Jamie is joining a music club. As part of her 4-CD introductory package, she can choose from 12 rock selections, 10 alternative selections, 7 country selections and 5 classical selections. If Jamie chooses one selection from each category, how many ways can she choose her introductory package?
My thoughts are:
12*10*7*5=4200
BUT for some reason that doesn't seem right... Would anyone have a suggestion?
Click here to see answer by Alan3354(69443) |
Question 172673: I have been struggling to figure out this math problem and I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!!
Fractional Equations
(1/x^2)-x^2 over (1/x)+x=3/2
I was also wondering if you would include the domain restriction and the LCD PLEASE!
Click here to see answer by stanbon(75887) |
Question 172670: I have been struggling to figure out this math problem and I was wondering if someone could help me? Please and Thank You!! I would deeply appreicate it!!
Frational Equations
6t^2-t-1 over 3(t^2+1)= 2
I was also wondering if you could include the domain restriction and the LCD PLEASE!!
Click here to see answer by ankor@dixie-net.com(22740) |
Question 172726: 1. pipe A can fill a tank in 5 h. pipe B can fill it in 2 h less time than it takes pipe C, a drainpipe, to empty the tank. with all three pipes open, it takes 3 h to fill the tank. how long would it take pipe C to empty it?
2. elvin drove halfway from Ashton to Dover at 40 mi/h and the rest of the way at 60 mi/h. what was his average speed for the whole trip? (Hint: let the distance for the whole trip be, say, 100 mi.)
3. the reciprocal of half a number increased by half the reciprocal of the number is 1/2. find the number.
4. find two positive numbers that differ by 8 and whose reciprocals differ by 1/6.
Click here to see answer by ptaylor(2198)  |
Question 172725: 1. a town's old street sweeper can clean the streets in 60 h. the old sweeper together with a new sweeper can clean the streets in 15 h. how long would it take the new sweeper to do the job alone?
2. during 60 mi of city driving, Jenna averaged 15 mi/gal. she then drove 140 mi on an espressway and averaged 25 mi/gal for the entire 200 mi. find the average fuel consumption on the expressway.
3. members of the computer club were assessed equal amounts to raise $1200 to but some software. when 8 new members joined, the per-member assessment was reduced by $7.50. what was the new size of the club>
4.to measure the speed of the jet stream, a weather plane left its base at noon and flew 800 km directly against the stream with an air speed of 750 km/h. it then returned directly to its base, arriving at 2:24 pm. what was the speed of the jet stream?
Click here to see answer by stanbon(75887) |
Question 172737: I am at a loss, please help. A team has opened six lines at the box office to sell World Seriest tickets. The first line is long,but the second line has one more than the first and the third line has one more than the second. Each line has one more person than the line before it. Altogether there are 327 people in all six lines. How many people are in each line?
Click here to see answer by stanbon(75887) |
Question 172896: Three workers pick 66 bushels of apples in a day. One of the workers is three times more productive than the second worker and twice as productive as the third worker. How many bushels did the second most productive worker pick?
Click here to see answer by colliefan(242) |
Question 172985: This one is kind of difficult for me. Can you help with this?
For a certain angle and a certain water pressure, the path of the water from a hose a fire scene can be modeled by the quadratic equation h=16^2+80t+4, where "h" is the high of the water above ground in feet and "t" is the time in seconds after the water has left the hose.
Find the value of h in the equation for t=0, 1, 2, 3, 4, 5 seconds.
t 0 1 2 3 4 5
h
Click here to see answer by jim_thompson5910(35256) |
Question 172985: This one is kind of difficult for me. Can you help with this?
For a certain angle and a certain water pressure, the path of the water from a hose a fire scene can be modeled by the quadratic equation h=16^2+80t+4, where "h" is the high of the water above ground in feet and "t" is the time in seconds after the water has left the hose.
Find the value of h in the equation for t=0, 1, 2, 3, 4, 5 seconds.
t 0 1 2 3 4 5
h
Click here to see answer by Mathtut(3670) |
Question 172995: A hobby gardner wishes to use 81ft of fencing to enclose a rectangular gardner and sub divide region into two smaller areas. If the total enclosed is 264 ft squared find the dimensions of the enclosed region.
Click here to see answer by stanbon(75887) |
Question 173044: Please help me solve this equation:
You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip to home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home?
thank you!!!
Click here to see answer by jim_thompson5910(35256) |
Question 173046: Please help me solve this equation:
A ball is thrown upward with an initial velocity of 30 feet per second from a point that is 24
feet above the ground. The height h (in feet) of the ball at time t (in seconds) after it is
thrown is
h= -16t^2 + 30t + 24
Find the time when the ball hits the ground.
Click here to see answer by KnightOwlTutor(293)  |
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