Tutors Answer Your Questions about Equations (FREE)
Question 227802: Hello,
I would like to make sure I have set-up the equation correctly for the two following word problems:
A factory had fixed costs of $12000 per month and a unit cost of $3.75 for every pair of ice grippers that it makes. If the factory can sell all the ice grippers it can make for $8.75 per pair, how many must be sold per month for the factory to break even?
Is the equation? 3.75+8.75x=12000
Number 2... Sally and Mark are having a friendly race with their scooters. Their scooters took off at the same time. Sally was able to go 30mph all the way to the finish line but Mark averaged only 20mph. When Sally finished, Mark still had 7.5 miles to go. How far was the finish line from the start?
Is the equation? 20+ 7.5x= 30-x
Click here to see answer by ankor@dixie-net.com(22740)   |
Question 228200: a train leaves town a for town b, traveling at 35 mi/h. at the same time, a second train leaves town b for town a at 45 mi/h. if the towns are 320 miles apart, how long will it take for the two trains to meet? so this is the problem I need to solve. I know d= rt I represented train 1 as x and train 2 as x-10 since it went 10 mi/h slower. added them 2x-10=320 for miles apart came up with 165 miles but question was how long not miles. I am lost as to proper steps
Click here to see answer by stanbon(75887) |
Question 228242: The length of a red rectangle is 15 cm more than its width w. A blue rectangle, which is 5 cm wider and 2 cm shorter than the red one, has perimeter 72 cm. Find the dimensions of each rectangle.
Click here to see answer by drj(1380)  |
Question 228394: Let f(x)=3e^(5x) + sin(2x)
(a) Find the derivatives of f up to the third order, f'(x), f''(x), f'''(x).
(b) Hence, evaluate the values of the derivatives above at x=0, i.e. f'(0), f''(0), f'''(0).
Help with this would be much appreciated.
Click here to see answer by stanbon(75887) |
Question 228973: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't understand it. Please help my by tomorrow! Thanks!~
Click here to see answer by CassieLynn(3) |
Question 228973: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't understand it. Please help my by tomorrow! Thanks!~
Click here to see answer by stanbon(75887) |
Question 228973: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't understand it. Please help my by tomorrow! Thanks!~
Click here to see answer by josmiceli(19441)  |
Question 228977: the alan company bout 80 tickets for a jazz conert. after giving away 20 tickets to customers, the company sold the rest to emplyees at half of the purchase price. if the company absorbed a $1000 loss on all tickets, how much did an emplyee pay for a ticket?
Click here to see answer by JenniferTutors(83)  |
Question 228977: the alan company bout 80 tickets for a jazz conert. after giving away 20 tickets to customers, the company sold the rest to emplyees at half of the purchase price. if the company absorbed a $1000 loss on all tickets, how much did an emplyee pay for a ticket?
Click here to see answer by josmiceli(19441) |
Question 228992: 6(x)-7=2(x)+29
54-7=18+29
47=47
I know the answer is x=9 But I do not understand how that is. If I were to take the test in this type of question,with different numbers, I wouldn't know how to do it at all! How would I figure these types of questions out? I am completely lost! Please help me!
With all appreciation,
Amber A
Click here to see answer by rfer(16322) |
Question 228991: 6(x)-7=2(x)+29
54-7=18+29
47=47
I had help on this equation a little while ago. My teacher had given me the answer and done the work without knowing it. I know that answer is x=9 But on the test I will be completely lost! Please help me.
Amber A
Click here to see answer by checkley77(12844) |
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