Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)
Question 443550: What are the equations used to solve this problem:
The Coffee Counter charges $9.00 per pound for Kenyan French Roast coffee and $8.00 per pound for Sumatran coffee. How much of each type should be used to make a 20-lb blend that sells for $8.40 per pound?
Click here to see answer by rwm(914) |
Question 443718: The force exerted by the wind on a plane surface varies jointly with the area of the surface and the square of the velocity of the wind. If the force on an area of 20 square feet is 11 pounds when the wind velocity is 22 miles per hour, find the force on a surface area of 47.125 square feet when the wind velocity is 36.5 miles per hour.
Click here to see answer by rwm(914) |
Question 442852: Force of wind on a window. The force exerted by the wind on a plane surface varies jointly with the area of the surface and the square of the velocity of the wind. If the force on an area of 20 square feet is 11 pounds when the wind velocity is 22 miles per hour, find the force on a surface area of 47.125 square feet when the wind velocity is 36.5 miles per hour.
Click here to see answer by rwm(914) |
Question 443254: The function W(d)=0.112d approximates the amount, in centimeters, of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 10 cm, 21 cm, and 95 cm.
10 cm of snow melting produces _____ cm of water.
21 cm of snow melting produces _____ cm of water.
95 cm of snow melting produces _____ cm of water.
Click here to see answer by rwm(914) |
Question 443711: A population of a colony of mosquitoes obeys the law of uninhibited growth.
a) If N is the population of the colony and t is the time in days, express N as a function of t.
b) If there are 1000 mosquitoes initially and there are 1800 after one day, how many will be present in three days?
c) How long will it take until there are 10,000 mosquitoes?
Click here to see answer by rwm(914) |
Question 443797: Miriam has two containers of water for a camping trip. One container holds 4 times as much as the other. The total amount of water is 25 gallons. How much water is in each container?
Click here to see answer by rwm(914) |
Question 443795: Devon purchased tickets to an air show for 4 adults and 2 children. The total cost was $90. The cost of a child's ticket was $3 less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.
Click here to see answer by rwm(914) |
Question 442440: a car rental agency charges a daily fee plus a mileage fee. Mr jones was charged $375 for 3 days and 500 miles. mr smith was charged $470 for 4 days and 600 miles. what is the agency's daily fee and what is their mileage fee?
Click here to see answer by rwm(914) |
Question 444908: NEED HELP!!!
A person is chosing between 2 cellular phone plans. One has a monthly fee of $50 for 500 minutes plus $0.35 for each minute over the 500. The second plan has a monthly fee of $75 for 1000 minutes plus $0.45 for each minute over the 1000.
After how many minutes used are the monthly costs of the plans equal?
Click here to see answer by htmentor(1343)  |
Question 445503: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $19 monthly fee and charges an additional $0.10 for each minute of calls. The second plan has no monthly fee but charges $0.14 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
Click here to see answer by rwm(914) |
Question 445761: You have $22 in your bank account and deposit $11.50 each week. At the same time your cousin has $218.00 but is withdrawing $13.00 each week. a. When will your accounts have the same balance? b. How much money will each of you have after 12 weeks?
We just need to figure out the equation, please. Not the answer. Thanks very much.
Click here to see answer by scott8148(6628)  |
Question 447168: Please help me solve this problem.
The average American uses 100 gallons of water each day. Write an equation that gives the gallons "g" of water that a person uses "t" days.
So far I have:
g= gallons
t = days
100g= 1 day
Click here to see answer by scott8148(6628)  |
Question 447027: A student ears $10 per hour for tutoring and $7 dollars per hour as a teacher's aid. Let x= number of hours each weeks spent tutoring and y=the number of hours each week spent as teacher's aid. Write the objective function that describes the total weekly earnings:
e=10x+7y correct?
for the 2nd part of the problem:
The student is bound by the following constraints:
a) to have enough time for studies the student can work no more than 20 hours a week
x+y <=20 correct?
b) The tutoring center requires that each tutor spend at least 3 hours a week tutoring.
3x+y <=20 correct?
c) The tutoring center requires that each tutor spend no more than eight hours a week tutoring?
No sure here.
Any help will be appreciated thanks
Click here to see answer by scott8148(6628)  |
Question 447687: A coffee company uses Columbian and Brazilian beans to make two blends of coffee, robust and mild. A pound of the robust blend uses 12 ounces of Columbian and 4 ounces of Brazilian beans. A pound of the mild uses 6 ounces of Columbian and 10 ounces of Brazilian beans. They have 105600 ounces of the Columbian beans and 84480 ounces of the Brazilian beans. How many pounds of each blend can they make to use all available beans?
Click here to see answer by stanbon(75887) |
Question 447666: You have 600 feet of fencing to enclose a rectangular lot that "BOARDERS ON A RIVER." If you DO NOT fence the side along the river, find the lenght and width of a plot that will maximize the area. What is the largest area that can be enclosed?
Click here to see answer by jorel1380(3719)  |
Question 447762: Please help me!!!!!!!!
Solve. Please show the algebraic inequality you used and show all of your work.
Two cell phone companies are advertising rates. Company A charges a rate of $20 per month plus $0.05 per minute. Company B charges a rate of $10 per month plus $0.10 per minute. What is the number of minutes used above which Company A costs more than Company B?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 447974: My teacher gave me this problem. Write an equation and solve the problem. If necessary, round results to two decimal places.
Jenny is considering a job in retail. Her salary would be $300 plus 40% comission on weekly sales. She would like to know her possible growss pay if she projects weekly sales between &750 and $1200.......
I am thinking its $300+.40x= but Im probably wrong. PLEASE HELP ME!
Click here to see answer by htmentor(1343)  |
Question 448194: The DVD Statistics show that the average person watches 48 DVD’s a year.
1.Write an equation to show the total number of DVD’s watched in one year. Use x for the number of action DVD’s and use y to represent the other categories.
X+y=48
The average person watches 3 times as many action DVD’s as any other category.
2.Write an equation to show the relationship between the action DVD’s and the other categories.
3x+y=48
This is what I came up with but it doesn't work out for one, and just doesn't seem right. I think my first answer is correct but the second part is not right.
Click here to see answer by scott8148(6628)  |
Question 448512: The manager of a candy shop wishes to mix candy worth $4 per pound, $6 per pound and $10 per pound to get 100 pounds of a mixture worth $7.60 per pound. The amount of $10 candy must equal the total amounts of the $4 and $6 candy. how many ounds of each must he use?
Click here to see answer by josmiceli(19441)  |
Question 449648: Patient Appointments Some doctors use the formula ND= 1.08T to relate variables N (the number of patient appointments the doctor schedules in one day), D ( the duration of each patient appointment), and T (total number of minutes the doctor can use to see patients in one day).
a) Solve the formula for N.
b) Use this result to find the number of patient appointments N a doctor should make if she has 6 hours available for patients and each appointment is 15 minutes long. (Round the answer to the nearest whole number.)
Please help me, for I am completely lost with this question and with the step by step process.
Thank you
Click here to see answer by edjones(8007)  |
Question 450034: Please help with the following word problem?
Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $69 for 3 days and 300 miles, while Mary was charged $123 for 5 days and 600 miles. Find the daily fee and find the mileage charge?
I have no idea where to start! Thanks!
Click here to see answer by htmentor(1343)  |
Question 450034: Please help with the following word problem?
Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $69 for 3 days and 300 miles, while Mary was charged $123 for 5 days and 600 miles. Find the daily fee and find the mileage charge?
I have no idea where to start! Thanks!
Click here to see answer by solver91311(24713)  |
Question 450605: The Union Square Cinema charges $9 for an adult ticket and $4 for a child’s ticket. Last Saturday, the entire 1020 seat cinema was sold out. The total ticket receipts for the evening were $7680. How many of each type ticket were sold?
Click here to see answer by rwm(914) |
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