Answer:
Step-by-step explanation:
Just multiply the first equation by -1 and then add them together to find x. Should look something like
-2x - y = -7
5x + y = 9
--------------------
3x + 0 = 2
x = 2/3
Now back substitute using either equation to find y. I'll use the first:
2(2/3) + y = 7
4/3 + y = 7
y = 7 - 4/3 = 21/3 - 4/3 = 17/3
Answer:
x=2/3
y=17/3
Answer:
the slope is -3 and the y intercept is -7
You have a function that for every well-behaved day adds $1. Let's call x the well-behaved days and y the amount of money in the fund. We can then make a table that looks like this:
X (well behaved days) , Y (money in fund)
0, 0
1, 1
2, 2
3, 3
4, 4
5, 5
If you take these as points: (0,0), (1,1), (2,2) , ... and plot them you get a line. The relationship is linear.
Another way you can tell is that y = x which is the equation of a line with slope = 1 and y-intercept 0 although for this case we only focus on x values that are 0 or greater because there would not be a negative number of well-behaved days.
A third way you can tell is that the money in the fund increases by the same amount (1) for each well-behaved day. That is, it's rate of change is constant (always 1) and so it is linear...it has a constant rate of change or a constant slope.
Answer:
The desired divisor is n = 21
Step-by-step explanation:
Let that number be n. Then:
-15/56 -5
---------- = ---------
n 6
Through cross-multiplication we get:
(-15/56)*6 = -5n, which reduces to:
(-15)(7) = -5n, or 3(7) = n
The desired divisor is n = 21
Please give more information as the question on its own doesn’t make any sense. There should be more info that can help answer the question.