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Ede4ka [16]
3 years ago
7

What is 4.2X-1.4Y=2.1-2X

Mathematics
2 answers:
enot [183]3 years ago
7 0

4.2x - 1.4y = 2.1 - 2x

Subtract 4.2x

-1.4y = 2.1 - 6.2x

Divide by -1.4

y = -3/2 + 9/2x

Answer: y = 9/2x - 3/2

Rina8888 [55]3 years ago
6 0
In this problem, we have to solve for y.
So:
After subtracting 4.2x and dividing -1.4; you get this:
y = 9/2x - 3/2

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Use the coordinates of the plotted points to complete the calculation below. Pay attention to negative signs.
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Step-by-step explanation:

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  \text{Slope}=\dfrac{\text{change in y}}{\text{change in x}}=\dfrac{\boxed{3}-6}{2-\boxed{1}}\\\\=\dfrac{\boxed{-3}}{\boxed{1}}\\\\\\=\boxed{-3}

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Sav [38]

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C(h) = 1+.25h

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5 0
2 years ago
Eliminate the parameter and obtain the standard form of the rectangular equation. line through (x1, y1) and (x2, y2): x = x1 + t
Helen [10]

The parametric equations for the line passes through the points (X₁ , Y₁) and (X₂ , Y₂) are :

X = X₁ + t (X₂ - X₁) ......................... (1)

Y = Y₁ + t (Y₂ - Y₁) .......................... (2)

For eliminating the parameter (t) , first we will solve any one equation for 't' and then substitute that into another equation.

From the equation (1),

⇒ t = \frac{X- X1}{(X2 - X1)}

Substituting this t = \frac{X- X1}{(X2 - X1)} into the equation (2), we will get :

Y = Y₁ + \frac{(X- X1)}{(X2 - X1)} (Y₂ - Y₁)

Y = Y₁ + \frac{(X- X1)(Y2 - Y1)}{(X2 - X1)}

So, this is the standard form of rectangular equation.

For two given points (0, 0) and (4, -4)

X₁ = 0 , Y₁ = 0, X₂ = 4 and Y₂ = -4

For finding the parametric equations, we will plug these values into the given parametric equations.

X = X₁ + t (X₂ - X₁)

⇒ X = 0+ t (4 - 0)

⇒ X = 4t

and Y = Y₁ + t (Y₂ - Y₁)

⇒ Y = 0+ t (-4 - 0)

⇒ Y = - 4t

So, the parametric equations for the line passing through (0,0) and (4, -4) are: X = 4t and Y = -4t

6 0
3 years ago
PLEASE HELP !!!! Please help !!!
BartSMP [9]

Answer:

1450$

Step-by-step explanation:

follow the basic steps to calculate the mean.

1. add up all of the numbers in the data set. in this case you would add up the all of the money since the question is asking for that.

2. divide by the amont of numbers there are.

1400+800+2150=4350

4350÷3=1450

hope this helped :)

7 0
3 years ago
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