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

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Question 426196: A 13-foot board is cut into two pieces. If one piece is x feet long, express the other length in terms of x.
Click here to see answer by algebrahouse.com(1079)

Question 426306: If a circle with a diameter of 10.6 units were to be drawn in the coordinate plane with its center at the origin, what would be the coordinates of its x and y intercepts?
Click here to see answer by Edwin McCravy(8909)

Question 426548: Identify the equation that describes the line in the slope- intercept form. Slope=5, y-intercept=-3.
Which multiple choice answer is it?
A. y=5x-3
B. y=3x-5
C. y=x-15
D. y=x+2
Click here to see answer by ewatrrr(10682)

Question 426564: The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by C(x)=2x^2-32x+540, where x is the number of videos rented daily. Find the lowest cost to the nearest dollar."
Click here to see answer by ewatrrr(10682)

Question 426600: the sum of twice a number and 4 less htan the number is the same as the difference betwen -32 and the number. What is the number?
Click here to see answer by ewatrrr(10682)

Question 426864: A rectangular painting has dimensions x and x+10. the painting is in a frame with a 2 inch side. The total area of the picture and the frame is 936 in.squared. What are the dimensions of the painting?
Click here to see answer by edjones(7569)

Question 426910: You need to rent a car for a three-day business trip. You compare the prices at two different rental agencies. The first agency charges $20.25 per day and $.14 per mile. The second agency charges $18.25 per day and $.22 per mile. How many miles would you have to drive before the first agency is less expensive than the second?

Click here to see answer by mananth(12270)

Question 426980: Kyle bought a boat at 4500. Five years later he sold it for 3600.
What percent of the purchase price did Kyle lose
Click here to see answer by Gogonati(809)

Question 426652: Two munchy bars, six pickpopple nuts, amd two chocolate eggs cost $32. Three munchy bars, seven pickpopple nuts, and two chocolate eggs cost $37. Find the cost of two munchy bars, four pickpopple nuts, and one chocolate egg.
Please and Thank You So Much!
Click here to see answer by ankor@dixie-net.com(15660)

Question 426987: A box has a volume of 100 cubic cm and the area of the bottom of the box is 50 square cm. Find the height of the box?
Click here to see answer by josmiceli(9697)

Question 426985: Find the volume of a box that which is 12cm long, 11cm wide and 5cm high?
12*11*5=660cm^3

Click here to see answer by tanny(2)

Question 427147: if one number is three times the other and their sum is 16, find the number.
Click here to see answer by rfer(12666)

Question 427218: Each of 2 brothers can wash a car in 1 hr.However their sister can wash the car in 45 mins., if all 3 works together how long will it take to wash the car?

Click here to see answer by Alan3354(30993)

Question 427223: if the width of the rectangle is 2 cm more than half of its length and its perimeter is 40 cm, what are the dimensions?
Click here to see answer by rfer(12666)

Question 427227: a radiator contains 25 quartz of water and antifreeze solution, which of 60 percent (by volume) is antifreeze. how much of this solution should be drained and replaced with water for the new solution to be 40 percent antifreeze.?
Click here to see answer by mananth(12270)

Question 427258: 6 ducks and 5 pigs cost 213 dollars, while 2 ducks and 9 pigs cost 269 dollars. find the cost of a duck and a pig
Click here to see answer by jorel1380(2518)

Question 426984: Find the area of a rectangle with length 12cm and width 11cm?
Click here to see answer by gwendolyn(128)

Question 427823: I don't understand how to set up these types of word problems, can you help?
A plot of land has a width of x meters. The length of the plot of land is 5 meters more than 3 times its width. What is the area of the land.
Click here to see answer by sudhanshu_kmr(1152)

Question 427954: An acute angle is an angle whose measure is less than 90 degrees. A right triangle is a triangle with one right angle, 90 degrees and 2 acute angles. One of the acute angles in a right triangle is 15 degrees less than twice the measure of the other acute angle. What is the measure of each acute angle of the right triangle? Use TWO variables.
Click here to see answer by stanbon(57384)

Question 428018: A grocer wants to mix two kinds of coffee.One kind sells for $1.35 per pound, the other sells for 2.65 per pound. He wants to mix a total of 16 pounds and sell them for $2.05 per pound. How many pounds of each kind should he use in the new mix?
Click here to see answer by John10(245)

Question 428026: A scientist has one alloy containing 39% copper and another containing 61% copper. How many pounds of each alloy must he use to make 41 pounds of a third alloy containing 48% copper?
Click here to see answer by mananth(12270)

Question 428527: I just need help setting this up, I can solve it after that.
At a Conseesion stand, five hotdog(s) and two hamburger(s) cost $9.75; two hotdog(s) and five hamburger(s) cost $11.25, Find the cost of one hotdog and one hamburger.
Click here to see answer by mananth(12270)

Question 428528: Two cars leave town at the same time and travel in the same direction. One car travels one and one-half times as fast as the other car. After 4 hours and 45 minutes, they are 95 miles apart. What is the speed of each car?
I don't want you to solve it, I am looking for the two equations for me to solve the linear system.

Click here to see answer by mananth(12270)

Question 428523: One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take the two pumps, working together, to empty the pool?

Click here to see answer by mananth(12270)

Question 428486: mr. sharma ivested a total of 30,000 in two ventures for a year. the annual return from one of them is 8% and the other paid 10.5% for the year. he recieved a total income of 2250 from both. how much did he invest at each rate???
i need help solving this problem.
Click here to see answer by mananth(12270)

Question 428731: Hey
My math question is
How many seconds will it take for an object dropped off the top of 555 ft Washingtin Monument to hit the ground. h=16tsquared + 64t?
Click here to see answer by stanbon(57384)

Question 428877: An economic indicator is icreasing at the rate of 3% per year. What is its doubling time. This I got it is 23.3 years. By what factor will the indicator increase in 5 years. I don't know how to put this in the calculator. I don't know what to do for this part.
Click here to see answer by robertb(4012)

Question 428944: Flying from Tokyo to London is approximately 6175 miles. On the way to London from Tokyo(against the wind) the flight took 13 hours. The return flight (with the wind) took 9.88 hours. Find out the speed of the plane in still air and the speed of the wind current
Click here to see answer by mananth(12270)

Question 429094: If half a number is added to 2, the result is greater than or equal to -8. Find all such numbers.
Click here to see answer by ewatrrr(10682)

Question 429172: A furniture dealer has 36 tables. Some tables have 4 legs and some have 3 legs, but she doesn't know how many of each kind there are. She has counted 124 legs in total. How many 4 legged tables are there?
Click here to see answer by ewatrrr(10682)

Question 429216: Find the LCM - 21c^7a^9,7c^6a^6,15c^9a^7
Click here to see answer by stanbon(57384)

Question 429156: 6(2m-5)=-18
Click here to see answer by jorel1380(2518)

Question 429227: if 4 is added to twice a number and this sum is multiplied by 2, the result is the same as if the number is multiplied by 3 and 4 is added to this product. What is this number?
Click here to see answer by ewatrrr(10682)

Question 429404: whats the linear function of this equation: 7x^3-39x^2-40x+132? thank you
Click here to see answer by richard1234(5390)

Question 429403: whats the linear function of this equation: 7x^3-39x^2-40x+132? thank you
Click here to see answer by stanbon(57384)

Question 429613: A car was worth $18,000 when it was 1 year old. It was worth $16,000 when it was 3 years old. If the age of the car and its worth have a linear relationship,how much will the car be worth when it it is 15 years old?
Click here to see answer by ewatrrr(10682)

Question 429620: Alberrt Pujols is on a hitting streak. In the last four games he has hit 8 homeruns. some were sole homeruns and some were 3-run homeruns. if there were a total of 14 runs scored off of his hits, how many were solo ad how many were 3-run homers? And how do you find the answer?
Thanks
I have tried trying to make equations I know one should be x+y=14
and let x= sole homeruns and let y=3-runhomers but I cant seem to figure it out
Click here to see answer by htmentor(789)

Question 429658: One number is five more than twice the second number. If the difference between twice the first number and three times the second number is six, what are the two numbers?
Click here to see answer by ewatrrr(10682)

Question 429763: The sum of the digits of certain two digit number is 7. Reversing its digits increases the number by 9. What is the number? And what is its linear equation?
Click here to see answer by edjones(7569)

Question 429934: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
9x – 2y = 88
-9x + 2y = -88

Click here to see answer by Gogonati(809)

Question 430089: x + 3y + z= 6
3x + y - z= -2
2x + 2y - z = 1
Click here to see answer by stanbon(57384)

Question 430080: Let Q represent the mass of a quantity of
carbon 14, whose half-life is 5437 years. The
quantity present after t years is given by
Q = 9 (1/2)t/5437
Sketch the graph of the function over the
interval t = 0 to t = 10000.
a) Find the initial quantity.
b) Find the quantity present after 2171 years.
Click here to see answer by stanbon(57384)

Question 430098: I need to see how to solve this word problem:
A boy was offered a bonus if he sold 100 subscriptions to a magazine. Each day he sold 3 subscriptions more than he had on the previous day, and on the 8th day he reached his 100 quota. How many subscriptions did he sell each day?
Click here to see answer by stanbon(57384)

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