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krok68 [10]
4 years ago
15

Solve by addition ANSWER NOW

Mathematics
1 answer:
emmasim [6.3K]4 years ago
5 0
Using elimination, we add the equations, but this time from left to right. This process wants to elimination a variable. So 2x plus -2x equals 0. Moving on the next variable, 6y plus -y is 5y. On to the last variable, 18 plus 12 is 30. So we have this equation, 5y=30. 30/5 is 6, so y=6. We plug 6 into y in one of the equations you choose. In this case, I'm going to use the first equation. Plugging 6, we have this equation, 2x plus 36 is 18. 18-36 is -18. We then have this equation, 2x=-18. We know -9 times 2 is -18, so our x value is -9, So, our y=6, and our x=-9.
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Show your work and simplify the expression (x – 2) (3x-4)
Verdich [7]
(x - 2)(3x - 4)

Remember F.O.I.L

First
Outside
Inside 
Last

First: x * 3x = 3x^2

Outside: x * -4 = -4x

Inside: -2 * 3x = -6x

Last: -2 * -4 = 8

3x^2 - 4x -6x + 8

Now, combine like terms.

3x^2 - 10x + 8


Hope I helped!

I'd be very happy to help if you need anything else!

~ Zoe

5 0
3 years ago
Read 2 more answers
What is the equation of exponential regression equation? Round all numbers you your answer to three decimal places
Monica [59]

Given:

Consider the below figure attached with this question.

The value in the given figure are:

a=0.2094539899

b=2.507467975

r^2=0.9435996398

r=0.9713905701

To find:

The exponential regression equation for the given values (Rounded to three decimal places).

Solution:

The general form of exponential regression equation is:

y=a\cdot b^x          ...(i)

Where, a is the initial value and b is the growth/decay factor.

The given values are:

a=0.2094539899

b=2.507467975

Round these numbers to three decimal places.

a\approx 0.209

b\approx 2.507

Putting a=0.209, b=2.507 in (i) to find the exponential regression equation.

\hat{y}=0.209\cdot 2.507^x

Hence, the correct option is C.

7 0
3 years ago
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love history [14]

Answer:16777216

Step-by-step explanation:

3 0
3 years ago
Find the absolute maximum and minimum values of f(x.y)=x^2+y^2-2x-2y on the closed region bounded by the triangle with vertices
dem82 [27]

Try this suggested solution, note, 'D' means the region bounded by the triangle according to the condition. It consists of 6 steps.

Answers are underlined with red colour.

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3 years ago
Which statement correctly identifies a point on the graph of f–1(x)?
Black_prince [1.1K]

Answer:

Step-by-step explanation:

I didn’t see any choices but an inverse function switches the x and y values.

For every (x,y) of f(x) the inverse function will have (y,x) of f^-1(x)

7 0
3 years ago
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