Questions on Word Problems: Linear Equations And Systems Word Problems answered by real tutors!

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Question 545792: Write an equation in slope intercept form of a line perpendicular to y = - 1/3x - 8 through the point (-2, 1).
Click here to see answer by saifoo.khan(162)

Question 545793: Write an equation in standard form of a line perpendicular to y = 2/5x + 5 through the point (4,2).
Click here to see answer by saifoo.khan(162)

Question 545798: Write an equation in standard form of a line perpendicular to y = 1/3x + 5 through the point (-9,2).
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Question 546681: The total value of the $1 bills and $5 bills in a cash box is $124. There are 8 more $5 bills and $1 bills. How many of each are there?
Click here to see answer by josmiceli(9686)

Question 546986: The sum of two numbers is 6 less than twice the first number. Their difference is 10 less than four times the second number. Find each of the numbers.
Click here to see answer by Maths68(1474)

Question 547085: Chemistry. E-Chem Testing has a solution that is 80% base and another that is 30% base. A technician needs 150 L of a solution that is 62% base. The 150 L will be prepared by mixing the two solutions on hand. How much of each should be used?
Click here to see answer by mananth(12270)

Question 547191: Find a formula for the line that has x-intercept of -1.3 and y-intercept of 1.8. Round numbers in your equation to the nearest tenth
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Question 547193: Solve the system:
{2w=L=70, Lw=400
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Question 547367: Please help I am struggling with the last portion of this where I need to use the equation the number of regular admissions sold was 10 more than twice the number of child tickets sold. This is the question. 210 people attended a school carnival. The total dollars earned at the carnival was $710. Tickets for regular admission were $5, student tickets were $3, and children under 5 were $1. The number of regular admissions sold was 10 more than twice the number of child tickets sold. How many of each type of ticket were sold? So far I got two equations: and . But I can't for the life of me figure out the final equation. Please help as soon as possible.
Click here to see answer by Alan3354(30993)

Question 547529: You make candles and sell them for $15 each. The materal to make up to 20 candles cost $20. How many candles must you sell to have a profit of $85?
Click here to see answer by josmiceli(9686)

Question 547556: Brad wants to buy flowers for his friend with $45. The daisies are $1 each and the roses are $2 each. He buys 3 more daisies than roses. How much did the roses cost?
Click here to see answer by Maths68(1474)

Question 547625: A 4% highway gradient means that the road rises 4m for each 100m of horizontal distance. Determine the angle of inclination of the road with the horizontal.
Click here to see answer by Alan3354(30993)

Question 547665: Area of a rectangular window is to be 306 square centimeters. If the length exceeds the width by 1 cm, what are the dimensions?
Click here to see answer by edjones(7569)

Question 547665: Area of a rectangular window is to be 306 square centimeters. If the length exceeds the width by 1 cm, what are the dimensions?
Click here to see answer by mananth(12270)

Question 547674: An open box is to be constructed from a square piece of sheet metal by removing 1 ft from each corner and turning up the edges. If the box is to hold 4 cubic feet, what should the dimensions of the sheet metal?
Click here to see answer by mananth(12270)

Question 547673: Find the dimensions of a rectangle whose perimeter is 26 meters and whose area is 40 square meters.
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Question 547408: here it goes plan a of medical insurance would have to be pay the first $170 of medical bill plus 40%of the rest, plan b have to pay $190 but only 20% of the rest. For the what amount of medical bills will plan b be saved? assume she has over $190 in bills. With plan b is she had more than ____ in bills?
Click here to see answer by KMST(1868)

Question 547721: A plane is using fuel at the rate of 9 1/2 gallons per hour and it has 6 1/3 gallons left in its tank. How long can the plane continue to fly?
Click here to see answer by mananth(12270)

Question 547726: A campsite rents spaces for $1.34 per square foot.
How much would it cost to rent a 15 foot by 17 foot space?
Click here to see answer by mathie123(224)

Question 547763: find the equation of the parabola that contains the points (2,14)(4,37)(-2,16)
Click here to see answer by stanbon(57361)

Question 548092: Write an algebraic expression for the product of 12 coins & c coins.
Click here to see answer by saifoo.khan(162)

Question 548161: With a tail wind, a jet flew 2000 miles in 4 hours. The jet's return trip against the same wind required 5 hours. Find the jet's speed and the wind speed. I got 500,0. I know that's wrong.
Click here to see answer by mananth(12270)

Question 548101: the state fair has an entry fee of $7.00 & an additional fee of $3.00 per ride.
a. identify the starting value (y-intercept)
b. identify the rate of change (slope)
c. write an equation for the linear relationship between total cost C spent for r riders
Click here to see answer by mananth(12270)

Question 548299: Marketeers doing research have determined the the new iDoodle will sell 5 million units next year if they price it at $200. If they price it at $150 then they think they can sell 7 million. Let y be the number of units they think they can sell and let x be the price. Find a linear equation that gives the number of units sold as a function of price.
Click here to see answer by stanbon(57361)

Question 548322: First of all I would like to know if the input depends on the output,,and this word problem,,,the recommeded weight of an adult male is given by the formula W=5.5h-220 where W represents weight in pounds and h represents height in inches,,,I am asked to determine the hight of a man whose recommended weight is 210lbs,,the determine the weight of a man who is 75 inches tall, then I am asked would 180 be a reasonable value for the input and why....Thank-you
Click here to see answer by nyc_function(2733)

Question 548676: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-600)+73.95, where it is assumed that t ≥ 600 minutes. What times will keep costs between $123.95 and $143.95?
For the cost to be between $123.95 and $143.95, the telephoning time must be between ? minutes and ? minutes.
Click here to see answer by Sarpi(32)

Question 548909: If 2 liters of regular gas and 3 liters of unleaded gas cost 252 cents how much does each cost?

Click here to see answer by oberobic(2304)

Question 549019: A farmer wants to divide his plot of land into 4 equal parts. He then will fence it in with 750 feet of fencing. Find a function that models the total area of the four pens.
Click here to see answer by solver91311(16897)

Question 549493: Two consecutive odd numbers are such that three the times the first is 5 more than twice the second. What are those two odd numbers?(x=4)
Click here to see answer by mananth(12270)

Question 549491: One number is 10 more than the other. The sum of twice the smaller plus three times the larger, is 55. What are the two numbers?(x=5)
Click here to see answer by mananth(12270)

Question 549523: Divide $80 among three people so that the second will have the twice as much as much the first ,and the third will have $5 less than the second .(x=17)
Click here to see answer by mananth(12270)

Question 549500: Divide $80 among three people so that the second will have twice as much as the first, and the third will have $5 less than the second.(x=17)
Click here to see answer by mananth(12270)

Question 549469: Bob and Jill went on a bike trip. They took a bus to their starting point and then biked the rest. They traveled 300 kilometers, and they biked 70 kilometers more than they were bussed. Let x=kilometers traveled by bike and y=kilometers traveled by bus. How many kilometers traveled by bike?

Click here to see answer by TutorDelphia(193)

Question 549490: divide $80 among three people so that tha second will have a twice as much as the first, and the therd will have $5 less than the second.
Click here to see answer by fcabanski(874)

Question 549747: A company has a vehicle parking area of 1200m^2 with space for x cars and y trucks. Each car requires 20m^2 of space and each truck 100m^2 of space.
a)show that x + 5y is equal or less than 60.
b) there must be space for at least
i) 40 vehicles
ii) 2 trucks
write down inequalities to show this information.
Thank you.
Click here to see answer by KMST(1868)

Question 371243: Abu ran for 1/3 of an hour and then walked for half an hour at the rate of 3 km/h. In all, he had covered 4 km. How fast did he run?
Click here to see answer by Maynard(1)

Question 549749: Two consecutive odd numbers are such that three times the first 5more the second .what are those4 two odd numbers ?(x=5)
Click here to see answer by nyc_function(2733)

Question 550032: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee and charges an additional $0.13 for each minute of calls. The second plan has an $8 monthly fee and charges an additional $0.18 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 josmiceli(9686)

Question 550092: If 3x+y=9, write the equation of any other line so that the system has infinitely many solutions.
Click here to see answer by fcabanski(874)

Question 550098: My answer doesn't make any sense, could you please show me how to solve this problem. A private plane takes 8 hours less to travel 960 km than a car. If the plane travels 3 times as fast as the car, what is the speed of the plane and the car?
Click here to see answer by Edwin McCravy(8909)

Question 550237: tow numbers are in the ratio 8:3. If the sum of numbers is 143,find the numbers.

Click here to see answer by stanbon(57361)

Question 550330: Customers of a phone company can choose between two service plans for long distance calls. The first plan has an monthly fee and charges an additional for each minute of calls. The second plan has a monthly fee and charges an additional 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 jim_thompson5910(28595)

Question 550332: Customers of a phone company can choose between two service plans for long distance calls. The first plan has an $11 monthly fee and charges an additional $0.14 for each minute of calls. The second plan has a $20 monthly fee and charges an additional $0.10 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 jim_thompson5910(28595)

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