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Alika [10]
2 years ago
11

Solve the equation show steps -2m+4m+5=3 ​

Mathematics
2 answers:
Mariana [72]2 years ago
6 0
The answer is -1

1. you combine -2m and 4m that equals 2m

2.you subtract 5 from both sides and that gives you 2m=-2

3. you divide both sides by two and it gives you -2/2 which is equivalent to -1

Dafna11 [192]2 years ago
5 0
-2m+4m+5=3
(-2m+4m)+(5)=3
2m+5=3
2m+5-5=3-5
2m=-2
2m/2=-2/2
m=-1
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6 0
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As Soon As Possible! (please)
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6 0
3 years ago
Worth 14 points please help I need a expert
lesantik [10]

Answer:

x=13

Step-by-step explanation:

we can guess that the three angles are a linear pair and equal 180

in this case we can start writing a equation

x+105+62=180

now we can subtract both whole numbers from 180 but that takes longer, so we will combine the whole numbers on the left side.

x+167=180

now we can go ahead and subtract 167 from both sides. by doing so, it isolates the x and gives you your answer

180-167=13

so... x=13

4 0
3 years ago
Here’s a graph of a linear function. Write the equation that describes that function. Express it in slope-intercept form.
Ipatiy [6.2K]

Answer:

y=4x-1

Step-by-step explanation:

Slope-intercept form is written in y=mx+b

  *m=slope

  *b=y-intercept

From what I see,

the line hits the points (0,-1) and (1,3)

Slope is the rise (change in the y-coordinate) of the line divided by the run (change in the x-coordinate).

4÷1=4

Slope=4

y=4x+b now

The y-intercept is the value of y when the line meets the y-axis

It seems to meet at (0,-1)

So we end up with...

y=4x-1 as our equation

8 0
2 years ago
A 5 in by 7in photograph is surrounded by a frame of uniform width the area of the frame equals the area of the photograph find
alexira [117]

<span>Let x be the width of the frame. 
Area of the picture is 5*7 = 35 sq in</span>

Area of the frame given as the same, frame = 35 sq in also

<span>
Therefore the total area (picture & frame) will be 70 sq in</span>

<span>

A simple equation would be made and it will look like this: (7+2x) * (5+2x) = 70

</span>

<span>Using the FOIL method
35 + 14x + 10x + 4x^2 = 70
4x^2 + 24x + 35 - 70 = 0; subtract 70 from both sides:
4x^2 + 24x - 35 = 0</span>

<span>
unluckily this will not factor easily, so we should use the quadratic equation:
where: a = 4; b = 24; c = -35</span><span>
</span><span> x = -b sqrt b^2 – 4*a*c divided by 2 * a</span><span>

  x = -24</span> ±<span> sqrt 24^2 -4*4*(-35) divided by 2*4

 x = -24 </span>±<span>sqrt 576 - -(560) divided by 8

 x = -24 </span>± sqrt 576 + 560 divided by 8<span>

 x = -24 </span>± sqrt1136  divided by 8<span>

 x = -24 + 33.7046 divided by 8
x =   9.7046 divided by 8
x =1.213 inches is the answer</span>

<span> </span>

6 0
3 years ago
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