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scoundrel [369]
3 years ago
12

12x + 2(3x - 7) - 8 simplify please show your work

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer:

18x-22

Step-by-step explanation:

12x+(2)(3x)+(2)(-7)+-8

=12x+6x+-14+-8

now combine like terms

=12x+6x+-14+-8

=(12x+6x)+(-14+-8)

=18x+-22

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Y-4=-5 (x+3) in point slope form
aniked [119]
The answer is C, slope = -5; point = (-3, 4). 

The point slope form of a line is y - y₁ = m (x - x₁), with (x₁, y₁) being the coordinates of one of the points of a line. Here, the first step is to find out what the slope is. The slope is the value in front of (x + 3), which is -5. Now we need to find the coordinates of the point. Since -y₁ is equal to -4, the coordinate of the y value is 4. Now onto the x value. Since -x₁ = 3, the coordinate of the x value is -3. That means that the answer is C, slope = -5; point = (-3, 4). 
7 0
3 years ago
Please please helpppp.
padilas [110]

There are 3 ways of solving a simultaneous problem, substitution method, elimination method and Gauss-Jordan method. I'm gonna use the substitution method since it's easier and i think it would suit your level more.

First let's try solving for y since it's easier to start with.

Firstly we have to find an equation for x:

x-2y=2\\x-2y+2y=2+2y\\x=2+2y

Great, now we can use the substitution method to find the value of y using the first equation:

2x+3y=11\\2(2+2y)+3y=11\\4+4y+3y=11\\7y=7\\y=1

Now we know that y=1 we can solve the first equation we made:

x=2+2y\\x=2+2(1)\\x=4

And the answer is x=4 , y= 1\\(4,1)

Double check:

2x+3y=11\\2(4)+3(1)=11\\8+3=11\\11=11\\\\x-2y=2\\(4)-2(1)=2\\2=2

And that's our final answer! (4,1)

7 0
3 years ago
Can some one help me with this question
alisha [4.7K]

Answer:

1/7

Step-by-step explanation:

you divide both numbers by 4

7 0
3 years ago
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PLEASE HELP ME!!!!!!!!! (100 points)
velikii [3]

Answer:

Domain [2,5)

Range (-6,18]

Step-by-step explanation:

Domain is shifted 2 units to the right because of the horizontal shift so it is [2,5)

Range is multiplied by 3 because of the vertical stretch so it is (-6,18]

6 0
3 years ago
Read 2 more answers
Sociologists want to test whether the number of homeless people in a particular urban area is increasing. In 2010, the average n
kvv77 [185]

Answer:

single sample z test

Step-by-step explanation: The correct statistics test is the single sample A test.

A one-sample z-test is used to test whether a population parameter is remarkably different from some hypothesized value. Each makes a statement about how the true population mean μ is related to some hypothesized value M. It is used to test whether the mean of a population is greater than, less than, or not equal to a specific value.

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