Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)
Question 99939: 1. Which label describes the following?
4x – 9
A) Expression B) Linear equation C) Equation which is not linear
2. Which label describes the following?
8x2 – 1 = 0
A) Expression B) Linear equation C) Equation which is not linear
Click here to see answer by stanbon(57278) |
Question 99868: a collection of nickels dimes and quarters in a money bag worth 33.50 number of quarters is five times the number of nickels and the number of dimes is five less than four times the number of nickels find the number of each type of coin.
Click here to see answer by ptaylor(2048)  |
Question 99822: Can you please help me solve this problem: a Maufacturer sells a product at $8 per unit, selling all that is produced. Fixed cost is $5000 and variable cost per unit is 22/9 dollars. find the total output and revenue at the break-even point. Find the output required to obtain a profit of $10,000. Could you also please show your work.
Thank you, I most appreciate it
Click here to see answer by ankor@dixie-net.com(15645)  |
Question 100488: April has 137 coins in her piggy bank for a total of $10. If the only two types of coins she has are dimes and nickels, how many of each type of coin does she have?
x+y=137
.05x+ 0.1y=10
-0.1x - 0.1y = -13.7
.05x + 0.1y = 10
-.05x = -3.7
x= -74
x+y=137
-74 + y =137
y = 211
Click here to see answer by scott8148(6628)  |
Question 100667: I'm attempting to help my daughter with her homework, please HELP.
A migrating elephant herd started moving at a rate of 6 miles per hour. One elephant stood still and was left behind. Then this stray elephant sensed danger and began running at a rate of 10 miles per hour to reach the herd. The stray caught up in 5 minutes.
Q. How long (in hours) did the stray run to catch up? How far did it run?
A. The stray caught up in 5 minutes which is (5/60= 1/12 hr). He ran .83 of a mile (1/12 x 10 miles/hr = 10/12=0.83.
Q. Find the distance that the herd traveled while the stray ran to catch up. Then write an expression for th total distance the herd traveled. Let x represent the distance (in miles) tha the herd traveled while the stray elephant stood still.
A. Is the distance 6 miles/hr x 1/12miles = 6/12 = .5 miles? Please help me write the equation. I think I'm solving this, but I need help to make sure.
Thanks in advance,
Click here to see answer by oberobic(2304) |
Question 100667: I'm attempting to help my daughter with her homework, please HELP.
A migrating elephant herd started moving at a rate of 6 miles per hour. One elephant stood still and was left behind. Then this stray elephant sensed danger and began running at a rate of 10 miles per hour to reach the herd. The stray caught up in 5 minutes.
Q. How long (in hours) did the stray run to catch up? How far did it run?
A. The stray caught up in 5 minutes which is (5/60= 1/12 hr). He ran .83 of a mile (1/12 x 10 miles/hr = 10/12=0.83.
Q. Find the distance that the herd traveled while the stray ran to catch up. Then write an expression for th total distance the herd traveled. Let x represent the distance (in miles) tha the herd traveled while the stray elephant stood still.
A. Is the distance 6 miles/hr x 1/12miles = 6/12 = .5 miles? Please help me write the equation. I think I'm solving this, but I need help to make sure.
Thanks in advance,
Click here to see answer by stanbon(57278) |
Question 100718: Find the measures of the angles of an isosceles triangle if the measure of the vertex angle is 40 degrees less than the sum of the measures of the base angles.
I don't know how to set this problem up with two different linear equations, I think I got the first one and it's (x+x)-40=180...but I'm not very sure. I need help setting this problem up.
Click here to see answer by edjones(7569)  |
Question 100718: Find the measures of the angles of an isosceles triangle if the measure of the vertex angle is 40 degrees less than the sum of the measures of the base angles.
I don't know how to set this problem up with two different linear equations, I think I got the first one and it's (x+x)-40=180...but I'm not very sure. I need help setting this problem up.
Click here to see answer by stanbon(57278) |
Question 100963: Jimmy caught a big fish, its head was 5 inches long. The tail was as long as the head plus hlf of the body. Its body was as long as the head plus the tail. How long is the fish?
This is not from a textbook, but from a worksheet given by the teacher.
Click here to see answer by Nate(3500) |
Question 100963: Jimmy caught a big fish, its head was 5 inches long. The tail was as long as the head plus hlf of the body. Its body was as long as the head plus the tail. How long is the fish?
This is not from a textbook, but from a worksheet given by the teacher.
Click here to see answer by edjones(7569)  |
Question 100928: This problem comes from a section involving systems of linear equations with two variables:
If the numerator of a certain fraction is increased by 5 and the denominator is decreased by 1, the resulting fraction 8/3. However, if the numerator, of the original fraction is doubled and the denominator is increased by 7, then the resulting fraction is 6/11. Find the original fraction.
Thanks in advance,
para.lax
Click here to see answer by scott8148(6628)  |
Question 101013: I am having trouble with this proble,. It is in a section of the textbook dealing with systems of equations with two variables.
A fulcrum is placed so that weights of 60 pounds and 100 pounds are in balance. If 20 pounds is subtracted from the 100 pound weight, then the 60 pound weight must be moved 1 foot closer to the fulcrum to preserve the balance. Find the original distance between the 60 pound and 100 pound weights.
Click here to see answer by scott8148(6628)  |
Question 101111: crystal sells coffee. her special blend is a combination of french roast @ $7.50 a lb. and kona deluxe @ $11.50 a lb. how many pounds of kona should she mix with 12 lbs. of french roast to get a blend to be sold for $10.00 a lb.?
Click here to see answer by checkley71(8403) |
Question 101111: crystal sells coffee. her special blend is a combination of french roast @ $7.50 a lb. and kona deluxe @ $11.50 a lb. how many pounds of kona should she mix with 12 lbs. of french roast to get a blend to be sold for $10.00 a lb.?
Click here to see answer by stanbon(57278) |
Question 101060: Please help me with Celsius temperature readings can be converted to
Fahrenheit readings using the formula F = 9/5 C + 32. What is the Fahrenheit
temperature that corresponds to each of the following Celsius temperatures:
-10,0, 15, 100?
Click here to see answer by FBOFalcons(2) |
Question 101731: hello and thank you for the help.I put were i got before i realized the equations were not working at least i think thats the problem. thank you again.
Dave borrowed $25000 in total from two banks. The first bank charged him 6% per annum while the second charged 9% per annum. At the end of the first year he paid equal amounts of interest to each bank. Determine the amount borrowed at each rate?
let x=money borrowed at 6%
interest at 6% is 6%/100=0.06x
let y=money borrowed at 9%
interest at 9% is 9%/100=0.09y
x+y=25000
(0.06x=0.09y)100
x+y=25000
6x=9y
9y+y=25000
10y=25000
y=2500
Click here to see answer by stanbon(57278) |
Question 101744: A theater has 30 rows of seats with 20 seats in each row. Tickets for the seats in the "n" rows closest to the stage cost $45. and tickets for the other rows cost $35.
What is the cost when "n" = 5???
Thank you for your help. It has been driving me crazy.....
Click here to see answer by edjones(7569)  |
Question 101818: the temperature at which water boils is calculated using the formula;T=ma+b where T=temperature in degrees Celsius and a=altitude in metres. In Banff Alberta, the altitude is 1383m and water boils at 95 degrees Celsius.At the peak of Mt. Logan BC, the altitude is 5951m and the water boils at 80 degrees Celsius. Deteremine the values of m and b.
thank you for taking the time to look at this question hope you do better than i did
Click here to see answer by Fombitz(13828)  |
Question 101783: Steve purchased tickets to a circus for 7 adults and 2 children. The total cost was $172. The cost of a child's ticket was $4 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 doukungfoo(195)  |
Question 102299: Technology. Driving down a mountain, Tom finds that he has descended 1800 ft
in elevation by the time he is 3.25 mi horizontally away from the top of the
mountain. Find the slope of his descent to the nearest hundredth.
Click here to see answer by stanbon(57278) |
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