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Karolina [17]
2 years ago
11

Answer this question: -12d- 6= -2(d+3)- 10d

Mathematics
2 answers:
Dmitriy789 [7]2 years ago
7 0
-12d -6 = -2(d+3) -10d
-12d -6 = -2d -6 -10d
-12d -6 = -12d -6
-6 = -6
infinite solutions ♾
galben [10]2 years ago
7 0

Answer:

d = 1

Step-by-step explanation:

-12d - 6 = -2 (d + 3) - 10d

-12d - 6 = -2d - 6 - 10d

-12d - 6 = -12d - 6

-12d = -12d

d = d = 1

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Someone please help me with number 4
stiks02 [169]

Answer:

the answer should be 36

6 0
3 years ago
Which description best compares the graphs given by the equations:
nexus9112 [7]

x - 5y = -5, -5x - 25y = 25

First, you'll need to get the x variable by itself.

x - 5y = -5<u>
</u><u>    +5    +5</u><u>
</u>       x = 0
So x is plotted on the 0.

For the second part of the first equation, you'll be looking for what the y variable represents.

x - 5y = -5
<u>-x           -x</u><u>
</u>     <u>-5y</u> = <u>-5</u><u>
</u><u>       5      5</u><u>
</u>        y = 1
So y is plotted on the 1 on the vertical line above the 0.

For the first part of the second equation, you'll do the same thing as in the first equation.

-5x - 25y = 25
<u>        +25   +25</u><u>
</u>          <u>-5x</u> = <u>50</u><u>
</u>            5      5
            x = 10
So the x for this equation is plotted on 10 on the horizontal line.

For the second part of the second equation, you will do the same thing as in the first equation.

-5x - 25y = 25
<u>+5               +5</u><u>
</u>       <u>-25y</u> = <u>30</u><u>
</u>        25      25
           y = 1.2
So the y for the second half of the second question is plotted on 1.2 on the vertical line.

<h2>Answer: B) Perpendicular</h2>

Perpendicular means the lines may or may not be of equal length and they will not be perfectly in line with each other.

Parallel means the lines may or may not be of equal length but will be perfectly in line with each other.

Intersecting means the lines may or may not be of equal length but will touch each other.

6 0
2 years ago
-4x+y=23 and 4x-9y=-15
astra-53 [7]

Answer:  x= -6; y= -1

Step-by-step explanation:

-4x + y = 23

4x - 9y = - 15

-4x + y = 23

      y = 23 + 4x     [Add 4x to both side]

4x - 9(23 + 4x) = - 15

4x - 207 - 36x = - 15

-32x - 207 = -15

-32x = 192             [Add 207 to both side]

    x = -6                [Divide -32 from both side]

-4x + y = 23

-4(-6) + y = 23          [Plug in -6 for x]

24 + y = 23              [Subtract 24 from both side]

       y = -1

5 0
3 years ago
Hey! i’ll give brainliest please help
Ahat [919]

Answer:

I think it's D but im not sure

hope this helps

have a good day :)

Step-by-step explanation:

6 0
3 years ago
A straight road to the top of a hill is 2500 feet long and makes an angle of 12° with the horizontal. Find the height of the hil
Sati [7]

Answer:

520 ft

Step-by-step explanation:

A straight road to the top of a hill is 2500 feet long and makes an angle of 12 degrees with the horizontal. Find the height of the hill.

base angle = 12 deg

hypotenuse = 2500

----

 

height = 2500*sin(12) = 519.78 ft

Do 520 ft if rounded

4 0
2 years ago
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