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

Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)

Question 385904: Write the equation of the line passing through (-1,4) and (4,-1). Write the equation in standard form Ax+By=C.
Click here to see answer by mananth(12270)

Question 385957: I am trying to solve a system's problem.
Walt has three investments totaling $110,000. These investments earn interest at 8%, 10% and 12% respectively. Walt's total income from these investments is $11,600. The income from the 12% investment exceeds the total income from the other two investments by $400. Find how much Walt has invested at 8%.
Thanks so much for the help!!
Denise
Click here to see answer by stanbon(57347)

Question 386011: Let t represent the number of years after 1997. find a linear equation that defines the number of area codes in terms of t.
Click here to see answer by Alan3354(30993)

Question 386419: 1) Joe got a promotion at work and a 15% raise. If Joe’s new salary is $48,000 a year, how much did Joe make before his raise?
Click here to see answer by rfer(12657)

Question 386422: 1) The sum of the angles of a triangle is 180o. The first angle of the triangle measures double the second angle. The third angle of the triangle measures 20 degrees more than the second. Find the measure of each angle.
Click here to see answer by rfer(12657)

Question 386424: Brenda and Gillian live 1 mile apart along the same street. Brenda walks at a rate of 3 miles per hour and Gillian walks at a rate of 2.5 miles per hour. If they each leave their own house at the same time, how long, to the nearest minute, will it take for them to meet?
Click here to see answer by rfer(12657)

Question 386420: The length of a rectangle is 3 inches more than the its width. If the perimeter of the rectangle is 30 inches, find the length and width of the rectangle.
Click here to see answer by mananth(12270)

Question 386451: Solve the equation and graph x-4y=8.
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Question 386451: Solve the equation and graph x-4y=8.
Click here to see answer by Alan3354(30993)

Question 386448: which letter represents a function?
A.{(2,1),(1,0),(2,3),(-1,-1)}
B.{(2,1),(1,0),(0,3),(-1,-1)}
C.{(2,1),(1,0),(1,3),(-1,-1)}
D.{(2,1),(1,0),(2,3),(-1,-2)}

Click here to see answer by Fombitz(13828)

Question 386489: Please help me with this problem if you can. I am having trouble with this topic.
The difference of two numbers (i.e., the bigger minus the smaller) is 4. If twice the smaller plus three times the larger is 52, what are the numbers?
Click here to see answer by ewatrrr(10682)

Question 386522: If 6 apples and 4 oranges equals $3 and 4 apples and 2 orange equals $1, how much does each apple and each orange cost? There are no quantity discounts.
I need your help getting a final answer please and thank you.
Click here to see answer by scott8148(6628)

Question 386607: The cost of 3 cans of juice is $12.30. Which of the following equation shows the relationship between the cost, c, and the number of cans of juice, n?
Click here to see answer by ewatrrr(10682)

Question 386611: Bill bought 2 pens for $9.00. Which of the following equation shows the relation between the cost of pens, c, and the number of pens, x, bought? What will the cost of 10 pens be?
a) c=4.5x, $9
b) x=4.5c, $45
c) c=4.5x, $45
d) x=4.5c, $9
Click here to see answer by ewatrrr(10682)

Question 386608: In a factory, a machine produces 55 items in 2 hours. Which of the following equation shows the number of hours, h, used to the number of items, x, produced? In how many hours can 275 items be produced?
a) x=27.5h,9
b) h=27.5x,9
c) h=27.5x,10
d) x=27.5h,10
Click here to see answer by ewatrrr(10682)

Question 386717: Jack bought $8 worth of 6-cent and 8-cent stamps numbering 110 stamps in all. How many stamps of each kind did he buy?
Click here to see answer by stanbon(57347)

Question 386739: Bob was given $9 to buy 6-cent and 8-cent stamps. He returned from the post office with 113 stamps and $1.46 in change. How many stamps of each kind did he buy/
Click here to see answer by armstrkl(28)

Question 386723: I am truly stuck here with this homework problem. Can someone please help me?
If a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 310, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth’s place; include units in your answer.
Click here to see answer by solver91311(16885)

Question 386805: using the data for the years 1985 to 1990, the function y=8x+20.1 can be used to estimate the first trend, while the function y=4.6x+39 can be used to estimate the second trend. for both functions, x is the number of years since 1985. if these trndes continue, in what year are the trends equal?
Click here to see answer by rfer(12657)

Question 386913: Keshawn works at a party-planning company and makes $7 per hour. His weekly paycheck also includes a $12 bonus for every party he schedules. His $176 paycheck last week was for 20 hours. How many parties did he schedule? Explain how you found your answer
Click here to see answer by mananth(12270)

Question 386911: For the inequality y is less than or equal to -11 , would -11 be considered the greatest possible value or least possible value of y? Justify your reasoning.
Click here to see answer by mananth(12270)

Question 386916: How many different variables are in the expression 8r-1 +9r-2(q-1) +11? Name each variable
Click here to see answer by user_dude2008(1861)

Question 386945: Te value, v, of a shopkeeper's inventory software program is given by v = -1/2t + 3, where t is the number of years the shopkeeper bought the program. What is the program worth 6 years after it is purchased? Plot the point with the given t-value, 6.
Click here to see answer by user_dude2008(1861)

Question 387184: Good evening! I have one more word problem that I am working on tonight that I hope someone can help me with.
CD Sales: The total weekly sales for a newly released rock CD increased each week. At the same time, the total weekly sales for a newly released rap CD decreased each week. Models that approximate the total weekly sales S (in thousands of units) for each CD are:
S = 25x + 100 Rock CD
S = -50x + 475 Rap CD
where x represents the number of weeks each CD was in stores, with x = 0 corresponding to the CD sales on the day each CD was first released in stores.
After how many weeks will the sales for the two CDs be equal?
Thanks so much!
Jim
Click here to see answer by stanbon(57347)

Question 387182: Good Evening, I am trying to solve the following word problem:
One eight ounce glass of apple juice and one eith ounce glass of orange juice contain a total of 185 milligrams of Vitamin C. Two eight-ounce glasses of apple juice and three eight-ounce glasses of orange juice contain a total of 452 milligrams of vitamin C. How much vitamin C is in an eight ounce glass of each type of juice?
I appreciate the help!
Jim
Click here to see answer by stanbon(57347)

Question 387215: Tyrel and dalia bought some pens and pencils. Tyrel bought 4 pens and 5 pencils which cost her $6.71... Dalia bought 5 pens and 3 pencils which cost her $7.12.... let a equal the cost of one pen and let b eual the cost of one pencil
Click here to see answer by stanbon(57347)

Question 387247: please help me with this equation {{ 5(20-x)+ 10x=165}}
Click here to see answer by jim_thompson5910(28595)

Question 387247: please help me with this equation {{ 5(20-x)+ 10x=165}}
Click here to see answer by rfer(12657)

Question 387294: The sum of two numbers is 53 and their difference is 25. Find the number.
Click here to see answer by robertb(4012)

Question 387424: Can someone like help me with this math question?
THE PIZZA PALACE
Super Duper 36 cut pizza...........$14.99
add pepperoni..................$2.50/pizza
You are hosting a pizza party with 55 people. There are 15 men, 15 women, 10 teenage boys, and the rest are teenage girls. You have figured that each grown man will eat 1/9 of a pizza, each grown woman will eat 1/12 of a pizza, each teenage boy will eat 1/6 of a pizza, and each teenage girl will eat 1/18 of a pizza.
How many slices of the advertised pizza will each grown man, grown woman, teenage boy, and teenage girl eat? Show your work. (15 points) Then state how many pieces each group of people will eat. (5 points)
thanks if you help.
Click here to see answer by scott8148(6628)

Question 387472: Bob bought 2 pounds of trail mix, 1.5 pounds of mixed nuts, and 3 pounds of dried fruit for $28.42. Brian bought 4.5 pounds of mixed nuts and 2 pounds of dried fruit for $39.39. The price for trail mix and dried fruit equal the price of mixed nuts. How much does each product cost per pound?
Click here to see answer by stanbon(57347)

Question 387506: Rusty burns 5 calories per minute swimming and 11 calories per minute jogging. In the morning, Rusty burns 200 calories walking and swims for x minutes. In the afternoon Rusty will jog for x minutes. How many minutes must he jog to burn at least as many calories y in the afternoon as he did in the morning?
Click here to see answer by robertb(4012)

Question 387526: A metal stays solid at fahrenheit temperature below 1718.1. Determine in the term of an inequality those celsius tempertures for which metal stays solid. Use the formula f=9/5c+32. Thanks.
Click here to see answer by robertb(4012)

Question 387575: im confused...
333 from 2,222=
4,634 by 20=
the word "from" is it substraction or division?
the word "by"is it multiplication or division? thats where im comfused, my brother is telling me that "from" is multiplication and "by" is divison but i have my doubts... thank youuuu
Click here to see answer by rfer(12657)

Question 387570: Two numbers have the sum of 18. The larger number is equal to 3 more than two times the smaller number. What are the numbers?
Click here to see answer by rfer(12657)

Question 387699: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
4a + 20b = 8
8a = -40b + 16

Click here to see answer by rapaljer(4667)

Question 387697: If a stone is tossed from the top of a 350 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 350, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth’s place; include units in your answer.
Click here to see answer by nerdybill(6958)

Question 387925: Kim bought 4 shirts and 3 pair of jeans for $109.85.
Jim bought 6 shirts and 1 pair of jeans for $94.95.
what is the cost in dollars, for 1 pair of jeans?
Click here to see answer by stanbon(57347)

Question 387880: solve the system x-y-5z=-13
4x+2y+2z=6
3x-2y+2z=24
Click here to see answer by Fombitz(13828)

Question 388026: Write a linear equation to model the situation. You walked 4 miles on a trail. You continue to walk at a rate of 3 miles per hour.

Click here to see answer by nerdybill(6958)

Question 388018: Can you show me the step by step solution to this problem?
720/x + 720/x-4 = 2

Click here to see answer by ewatrrr(10682)

Question 388053: If you buy 7 hamburgers and 3 sodas at a restaurant, you receive $1 change from a $20 bill. If you buy 8 hamburgers and 2 sodas you receive $0.50 in change from a $20 bill. How much change will you receive from a $5 bill if you buy 1 hamburger and 1 soda?
Thanks.
Click here to see answer by solver91311(16885)

Question 388052: Movie tickets at a local theater cost $6 for adults an $2 for children. If 175 tickets were sold, with cash receipts of $750, how many children's tickets were sold?
Thanks for your help. I have a hard time with word problems.
Click here to see answer by solver91311(16885)

Question 388054: The ratio of boys to girls in a class is 4:7. There are 88 students in the class. How many boys are there?
Thanks for your help.
Click here to see answer by Alan3354(30993)

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