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zaharov [31]
3 years ago
9

Evaluate the expression below when y = -3. 2y + 7 -4y − 10 A

Mathematics
1 answer:
GREYUIT [131]3 years ago
4 0
Hello!

Judging by the question you have provided I have figured that the best way to go about finding the solution is by using the distributive property!

This means you will want to distribute the y = -3 into the 2y+7-4y-10 equation.

However, the first step you should take is to simplify the equations.
After simplifying the equations you should come out with the new equation being -2y-3.

You now want to distribute the y=-3 into the equation!
You should get -2(-3)-3. Now solve!

The answer you get should be 3!

Hope this helped!
-Blake
 
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LenKa [72]

Answer:

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Step-by-step explanation:

5 0
2 years ago
Use the dot plot to answer the question.
Tcecarenko [31]

Answer:

Mean of the data set in the dot plot would be: 3.6

Step-by-step explanation:

As we know that Mean from the dot plot can be obtained by:

  • adding the numbers and then
  • divide the resulting sum by the number of addends.

Please check the attached figure where the dot plot is also plotted.

From the dot plot, it is clear that

There are 3 dots at 1.

There are 4 dots at 2.

There are 3 dots at 3.

There are 4 dots at 4.

There are 5 dots at 5.

There are 3 dots at 6.

All we have to do is to add the dots and divide the sum by the number of addend dots.

In other words:

There are 3 dots at 1    ⇒  1+1+1

There are 4 dots at 2   ⇒  2+2+2+2

There are 3 dots at 3   ⇒   3+3+3

There are 4 dots at 4   ⇒   4+4+4+4

There are 5 dots at 5   ⇒   5+5+5+5+5

There are 3 dots at 6   ⇒   6+6+6

As there are total 22 dots.

And the sum of all the dots with respect to their plot number = 79

i.e. 1+1+1+2+2+2+2+3+3+3+4+4+4+4+5+5+5+5+5+6+6+6 = 79

Thus

Mean of the data set in the dot plot = 79/22

                                                            = 3.6

Therefore, Mean of the data set in the dot plot would be: 3.6

4 0
3 years ago
Find the values of a b and c in the table
oksian1 [2.3K]

Answer: use google calculator It’s reliable

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The equation y - 2 = 3(x + 1) is in point-slope
attashe74 [19]
Y-2=3x+3
Then add two
So y=3x+5
Hope this helps sorry if wrong
5 0
3 years ago
Which best describes the graphs of the line that passes through (−12, 15) and (4, −5), and the line that passes through (−8, −9)
konstantin123 [22]

Answer:

C) They are perpendicular lines.

Step-by-step explanation:

We first need to find the slope of the graph of the lines passing through these points using:

m =  \frac{y_2-y_1}{x_2-x_1}

The slope of the line that passes through (−12, 15) and (4, −5) is

m_{1} =  \frac{ - 5 - 15}{4 -  - 12}

m_{1} =  \frac{ - 20}{16}  =  -  \frac{5}{4}

The slope of the line going through (−8, −9) and (16, 21) is

m_{2} =  \frac{21 -  - 9}{16 -  - 8}

m_{2} =  \frac{21  + 9}{16  + 8}

m_{2} =  \frac{30}{24}  =  \frac{5}{4}

The product of the two slopes is

m_{1} \times m_{2} =  -  \frac{4}{5}  \times  \frac{5}{4}  =  - 1

Since

m_{1} \times m_{2} =  - 1

the two lines are perpendicular.

4 0
3 years ago
Read 2 more answers
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