Tutors Answer Your Questions about Linear-systems (FREE)
Question 52958: Page 326 #12. A merchant mixed 10lb. of cinnamon tea with 5lb. of spice tea. The 15-pound mixture cost $4o. A second mixture included 12 lb. of cinnamon tea and 8 lb of spice tea. The 20-pound mixture cost $54. Find the cost per pound of the cinnamon tea and the spice tea. how do I solve this problem?
Click here to see answer by funmath(2925)  |
Question 53283: This is a word problem. Sally bought 3 chocolate bars and a pack of gum and paid $1.75. Jake bought 2 chocolate bars and 4 packs of gum and paid $2.00.Find the cost a chocolate bar and the cost of a pack of gum. This is what I have done; 3x + 1y = 1.75; 2x+4y = 2.00.
3x + 1y = 1.75; -8x - 16y = -8.00 (multipling by -4)
17y = -6.25; y= 0.37
3x + 1(0.37)=1.75
3x + 0.37 = 1.75
3x = 1.38
x = 0.46
When Checking; 3(0.46) + 1(0.37)=1.75
1.38 + 0.37 = 1.75
1.75 = 1.75 (true)
Te problem is when I plug these numbers into the second equation it does not come out to 2.00 it comes out as 2.40. Please tell me what I am doing wrong.
Click here to see answer by ankor@dixie-net.com(15645)  |
Question 53271: I have a word problem that I cannot seem to figure out.
One number is 12 more than another. The sum of the smaller number and twice the larger is 39. Find the larger number.
No matter how I try to work out this problem it comes out wrong. Please Help!!!
Click here to see answer by ankor@dixie-net.com(15645) |
Question 53307: I have to solve the following system by addition:
5x - 3y = 13
4x - 3y = 11
I have tried using the example from our text and I come out with x=2, y= -1 but when Y check these #'s into the equations they do not work. Please help.
Click here to see answer by funmath(2925) |
Question 53315: This is a word problem. One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
I do not even know where to begin on this problem. Please Help!!!!!
Click here to see answer by stanbon(57282) |
Question 53399: if two given equations are being solved so that one unknown is eliminated by the method of comparison which of the following steps is essential? (A )6 x 7-2Y/3 -5y=8 or (B) 7-3x/2=6x-8/5 i got (B) IS THIS RIGHT ALSO solve the following equation 4ax+?by=11ab,8ax-5by=?ab ? x=? y=? i could not get this one please show formula thanks
Click here to see answer by stanbon(57282) |
Question 53486: Mr. McKelvey finds that flying with the wind he can travel 1188 miles in 6 hours. However, when flying against the wind, he travels only 2/3 of the distance is the same amount of time.
Find the speed of the plane in still air and the wind speed.
Click here to see answer by checkley71(8403) |
Question 53496: A furniture shop refinishes chairs. Employees use two methods to refinish a chair. method I takes 1 hour and costs $3. Method II takes 1 1/2 hours and material costs $1.50. Last Week, they took 36 hours and spent $60 refinishing chairs. How many did they refinish with each method?
Click here to see answer by stanbon(57282) |
Question 54016: I have the following word problem and really do not know where to begin figuring it out, using algebra anyways. Please Help!!
Allen bought 20 stamps at the post office in 37¢ and 20¢ denominations. If the total cost of the stamps was $7.06, how many 37¢ stamps did Allen buy?
Click here to see answer by stanbon(57282) |
Question 54023: Section title is Puzzle Problems.
A number between 300 and 400 is forty times the sum of its digits. The tens digit is 6 more than the unit digit. find the number. Found the answer as 360, but can't figure out all of the steps
Click here to see answer by Nate(3500) |
Question 54023: Section title is Puzzle Problems.
A number between 300 and 400 is forty times the sum of its digits. The tens digit is 6 more than the unit digit. find the number. Found the answer as 360, but can't figure out all of the steps
Click here to see answer by AnlytcPhil(1276)  |
Question 54121: I have to do the following problem and I'm not sure if I have it correct.
Is -4 a solution to the equation 7x - 5 + 3x = 6 + x - 10?
This is what I have done:7(-4) - 5 + 3 (-4) = 6 + (-4) - 10
28 - 5 + -12 = 10 - 10
23 + -12 = 10 - 10
-11 = 0
So my answer is No it is not a solution to the equation. Is this correct? Please Help!!!!
Click here to see answer by jake_6233(74) |
Question 54363: Hello! I need help doing word problems. Its like when I;m presented with a word problem I don't know where to start first, what to do next. Please help on these two problems. Please help me understand it.
1. Steven is travelng to a computer convention by car. His compnay will reimburse him $ .29 per mile. If Steven travels 890.5 miles, how much will he receive from his company?
Please Help, Thank You
Click here to see answer by stanbon(57282) |
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