Tutors Answer Your Questions about Linear-systems (FREE)
Question 114656: This is a problem that I need to solve by system of elimination and then check the answer. The problem is:
{3a+2b=2}
{a+6b+18}
How do I solve this, and check the problem. Please help.
Thank You
Click here to see answer by jgr45(31)   |
Question 114898: This is a problem from Section 8.1 on page 687. I cannot think backwards, which is what I believe I need to do. The problem is as follows:
Find values for m and b in the following system so that the solution to the system is (-3,4).
5x + 7y = b
mx + y = 22
Please help! Thank you!!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 114980: If you buy 6 pens and 1 mechanical pencil you will only get $1 change from your $10 dollar bill, but if you buy 4 pens and 2 mechanical pencils you will get $2 change. How much does each pen and mechanical pencil cost?
Click here to see answer by stanbon(75887) |
Question 115311: Two angles are complimentary to each other. Twice one angle is equal to the other angle plus the product of three and five.
Set up a system of linear equations to represent the two angles. (you will need two equations and two unknowns)
Graph each of the equations on one rectangular coordinate system.
What do you notice about the intersection of the two lines?
Click here to see answer by stanbon(75887) |
Question 115322: can someone help me solve this problem?
1. consider the function f(x)=x^2 + 6x - 2
A. find h, the x-coordinate of the vertex of this parabola.
answer_______________________________________________
B. Substitute the two whole number values immediately to the left and right of h into the function to find the cooresponding y. Fill in the table below. Make sure your x-values are in increasing order in your table.
x y
__h=___ ________
_____ ________
_____ ________
_____ ________
_____ ________
C. Use microsoft exel to graph the function by plotting the points found in the table in part B.
need help ASAP
THANKS
Click here to see answer by scott8148(6628)  |
Question 115151: Julio Mendez is a carpenter. He is building a staircase between the first and second floors of a house, a height of 9 feet. The tread, or depth of each step, must be 10 inches. The slope of the staircase cannot exceed 3/4. What is the measure of the riser, or height of each step?
Click here to see answer by checkley71(8403) |
Question 115147: Julio Mendez is a carpenter. He is building a staircase between the first and second floors of a house, a height of 9 feet. The tread, or depth of each step, must be 10 inches. The slope of the staircase cannot exceed 3/4. How many steps should he plan?
Click here to see answer by checkley71(8403) |
Question 115525: Given the following inequalities which point is located in the shaded area
y<2x-3 (the < is underlined)
y<-1/2+2 (the < is underlined)
the points are...
-5,-2
2,6
3,-4
5,3
The answer I am coming up with is -5,-2 is this correct?
I am kinda confused on exactly how to do system of inequalities, I really appreicate your help!!
Click here to see answer by stanbon(75887) |
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