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3 years ago

I need some serious help with standard form, Im really confused . Here's a problem ,

1 answer:

6 0

I can see that the equation given above is a linear equation since y and x are the only variable and the degree is one. The standard form of a linear equation is written as:

Ax + By = C

We write the given equation into standard form as follows:

y - 2 = 2(x - 3)
y - 2 = 2x - 6
y -2x = -6 +2
y - 2x = -4
2x - y = 4

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What is the trignometric ration for cos C? ____/____

tatiyna

cos $\alpha=\frac{adjacent}{hypotenuse}$

cosC = $\frac{45}{51}$

4 0

3 years ago

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What is the slope of the line that passes through the points (-4, 0) and (-4, -10)? Write your answer in simplest form.

Tresset [83]

Answer:

<h2> There is no slope.</h2>

Step-by-step explanation:

$slope=\dfrac{y_2-y_1}{x_2-x_1}$

It means that for a line passing through two points to have the slope, the x-coordinates of these point have to be different.

(-4, 0) and (-4, -10) means x₁ = x₂ = -4, so there is no slope.

{the line is parallel to Y-axis, and has an equation: x=-4}

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3 years ago

NO LINKS I NEED REAL ANSWERS what are the 2 missing numbers on the blanks?

zavuch27 [327]

Answer:

Step-by-step explanation:

P1 = (2000, 1000) in the form (x1,y1)

P2 = (2012, 3400) in the form (x2,y2)

m = (y2-y1 / x2-x1)

m = ( 3400-1000 ) / (2012 - 2000)

m = 2400 / 12

m = 200

y = 200x + 800

8 0

3 years ago

X+3y=3 2x-4y=6 solve the equations

Gelneren [198K]

Subtract the second equation from double the first equation:

2x+6y-2x-(-4y)=0

10y=0

Therefore, y=0. Substituting this into the first equation, we see that:

x+3(0)=3

x=3

Therefore, x=3. The solution to this system is x=3, y=0, or (3, 0).

4 0

3 years ago

Read 2 more answers

The National Football League (NFL) polls fans to develop a rating for each football game (NFL website, October 24, 2012). Each g

Gelneren [198K]

This question is incomplete, in that the Excel File: data07-11.xlsx a. was not provided, but I was able to get the information on the Excel File: data07-11.xlsx a. from google as below:

57 61 86 74 72 73

20 57 80 79 83 74

The image of the Excel File: data07-11.xlsx a. is also attached below.

Answer:

a) Point estimate of sample mean = 68

b) Point estimate of standard deviation (4 decimals) = 17.8122

Step-by-step explanation:

a) Point estimate of sample mean, \bar{x} = ∑Xi / n = (57 + 61 + 85 + 74 + 73 + 72 + 20 + 58 + 81 + 78 + 84 + 73)/12 = 68

b) Point estimate of standard deviation = sqrt ∑ Xi² - n\bar{x}² / n-1)

= sqrt(((57 - 68)^2 + (61 - 68)^2 + (85 - 68)^2 + (74 - 68)^2 + (73 - 68)^2 + (72 - 68)^2 + (20 - 68)^2 + (58 - 68)^2 + (81 - 68)^2 + (78 - 68)^2 + (84 - 68)^2 + (73 - 68)^2)/11) = 17.8122

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3 years ago