Tutors Answer Your Questions about Graphs (FREE)
Question 142952: Martha wants to buy a digital camera from her three-month savings. To do this she needs to maintain an average saving of $300 in each month. She saves $450 in the first month and $200 in the second month. Find the amount she should save in the third month to buy a digital camera at the end of three months.
Click here to see answer by checkley77(12844)  |
Question 143014: Determine how many solutions exist
Use either elimination or substitution to find the solutions (if any)
Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
0.2x + 0.4y = 1.7 and 8.3x - 6.3y = -4.3
Click here to see answer by stanbon(75887) |
Question 143128: Walt made an extra $9000 last year from a part-time job. He invested part of the money at a 9% annual rate of interest, and the rest at an 8% annual rate of interest. At the end of the year, he made a total of $770 in interest. How much was invested at 8%? Any help would be appreciated. Thank you very, very much.
Click here to see answer by checkley77(12844) |
Question 143177: im having a difficult time solving this kind of problem
5x-2y=4
x+2y=8
it says to solve each equation by the addition menthod (*you may have to multiply both sides by -1)
if you can show me the steps and explain them to me thanks.
Click here to see answer by oscargut(2103)  |
Question 143162: Two graphic artists are working on a 3D game project. One artist works 3 hours more than his colleague. Together they work more than 27 hours. Find the possible number of hours each of them worked.
Click here to see answer by zephyr(9) |
Question 143533: A reduced fat cookie contains 4 grams of fat per serving. In order for food to be termed "reduced fat", it must have at least 15% less fat than the regular item. What can you conclude about how much fat is in a serving of the regular cookie?
Click here to see answer by Fruglemiester1234(13) |
Question 143639: Find the solution set of the inequalities.
1. -6<-2|x|
this is what I did.
-6<-2|x|
+2 +2
______
-4< |x|
2. 5<-5+ |3a|
I used the same methods above, but the multiple choice answers asked if there were invisible, thick or thin lines...never heard of those.
Click here to see answer by josmiceli(19441)  |
Question 143825: This question is from MathXL
The question is stated as: Find an equation of the line containing the given pair of points. (3,5) and (9,9).
My first step was to identify x1 x2 and y1, y2 so I had 9-5 /9-3 . My answer to that was 4/6 reduced to 2/3. So to write an equation I was trying to put it in the form of y=mx+b So my question is if the 2/3 is x then how do I now get B?
Click here to see answer by Earlsdon(6294) |
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