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Yuri [45]
3 years ago
11

How do i do this problem 0.25(x+4)-3=28

Mathematics
2 answers:
KiRa [710]3 years ago
6 0
Distribute the .25 to get .25x + 1 - 3 = 28

Then simplify to get .25x - 2 = 28

Move the two to the right to get .25x = 30

Then divide to leave x: 30 / .25 = 120

X = 120
Alekssandra [29.7K]3 years ago
3 0

Answer:

x = 120

Step-by-step explanation:

We can break this down into a handful of steps.

0.25(x+4)-3=28

Firstly, you can simplify right off the bat via distribution.

(0.25)(x)+(0.25)(4)+-3=28

0.25x+1+-3=28

Then, combine like terms.

(0.25x)+(1+-3)=28

0.25x+-2=28

0.25x-2=28

By using the additive property of equality, add 2 to both sides of the equation.

0.25x-2+2=28+2

0.25x=30

Then, divide both sides by 0.25.

\frac{0.25x}{0.25} = \frac{30}{0.25}

x=120

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<span>In this formula :

</span><span>y </span>tells us how far up the line goes
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<span>b </span>is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the<span> line properties.</span><span> We shall now graph the line </span><span> 3x+2y-62  = 0</span><span> and calculate its properties
</span>

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</span>

When y = 0 the value of x is 62/3 Our line therefore "cuts" the x axis at x=20.66667

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</span>

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 31.000 and for x=2.000, the value of y is 28.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 28.000 - 31.000 = -3.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

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3.y-intercept = 62/2 = 31


I got sources from a few websites so excuse if something is weird/wrong.  
</span></span>
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