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Olenka [21]
4 years ago
7

I don't understand can someone help please.

Mathematics
1 answer:
Roman55 [17]4 years ago
4 0

Answer:  The point where the two graphed lines cross is the solution to the system of equations.  (1, -1)

Step-by-step explanation:

The second equation is already in slope-intercept form y = x - 2

the slope is +1 (invisible coefficient of x) and the y-intercept is -2

y = mx +b    

"m" is the slope (the coefficient of x) Positive slopes go up from left to right

"b" is the y-intercept, where the graphed line crosses the x-axis

Rewrite the first equation in slope-intercept form.

6x + y = 5   subtract 6x from both sides

<em>-6x</em> + 6x +y = -<em>6x</em> + 5 .( left side 6x + 6x =0 so "cancel")

y = -6x + 5

Then you know the slope and the intercepts

b = 5  so start with a point at +5 in the y-axis

m = -6 so from there go down 6 and over to the right 1 square and plot another point. Draw a straight line through the two points.

The point where the two graphed lines cross is the solution to the system of equations.

Your graph should look like the screenshot below.

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Answer:

a \: \:  x =  \frac{ -1 ±  i\sqrt{139}}{14}

Explanation:

Since this is unfactorable, use the Quadratic Formula:

x =  -b ± \frac{ \sqrt{ {b}^{2} - 4ac}}{2a}

Now, take the information and input it:

-1 ± \frac{ \sqrt{1 - 4(7)(5)}}{2(7)} \\  \\ -1 ± \frac{ \sqrt{ -139}}{ 14} = \frac{-1 ±  i\sqrt{139}}{14}

I am joyous to assist you anytime.

5 0
3 years ago
What is the slope of the line that goes through (6, 5) and (3, 1)?
Elenna [48]
I hope this helps you


x'=6 y'=5 x"=3 y"=1



slope. (x'-x")=y'-y"


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slope. 3=4


slope =4/3
4 0
4 years ago
Read 2 more answers
HELPPP PLEASE 20 POINTS<br> What is the area of this face?
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28

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4 years ago
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3 years ago
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On September 16, 2011, the New York Times reported that the American public's approval rating of Congress had sunk to an all-tim
777dan777 [17]

Answer:

The sample size is  n = 451

Step-by-step explanation:

From the question we are told that

   The margin of error is  E = 0.03

    The sample proportion is  \^ p = 0.12

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

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=>   n = 451

3 0
3 years ago
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