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Elina [12.6K]
2 years ago
13

X/x+2 = 4/5. Solve for x.

Mathematics
2 answers:
9966 [12]2 years ago
6 0
Hey!

First, let's write the problem.
\frac{x}{x}+2=\frac{4}{5}
Since the least common multiple is 5x, we are going to multiply by that.
\frac{x}{x}\cdot \:5x+2\cdot \:5x=\frac{4}{5}\cdot \:5x
5x+10x=4x
15x=4x
Subtract 4x from both sides.
15x-4x=4x-4x
11x=0
Divide both sides by 11.
\frac{11x}{11}=\frac{0}{11}

Our final answer would be,
x=0

This tells us that this problem has no solution.

_________

Your problem may have been written like this, 
\frac{x}{\left(x+2\right)}=\frac{4}{5}
If so, there's a totally different solution, which is why important to include parenthesis. Let's simplify it.
Cross multiply. It would look something like this,
x\cdot \:5=\left(x+2\right)\cdot \:4
Apply the distributive property.
x\cdot \:5=4x+8
Subtract 4x from both sides.
x\cdot \:5-4x=4x+8-4x
This tells us that our final answer would be,
x=8

Thanks!
-TetraFish
gregori [183]2 years ago
4 0
<span>X/x+2 = 4/5

5x = 4x + 8

5x - 4x = 8

x= 8


</span>
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<h2>8</h2>

Step-by-step explanation:

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8 0
2 years ago
Help meeeeeeee please :(.
vodomira [7]

Answer:

x^{3} -5x^{2} -6x +8 \frac{-2}{x + 3}

Step-by-step explanation:

            x^{3} -5x^{2} -6x +8 \frac{-2}{x + 3}

x + 3 / x^{4} - 2x^{3}-21x^{2} -10x +22

         -(x^{4} + 3x^{3})

                 -5x^{3} -21x^{2} -10x +22

                 -(-5x^{3} -15x^{2})

                              -6x^{2} -10x +22

                            -(-6x^{2} -18x)

                                            8x +22

                                          -(8x + 24)

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4 0
3 years ago
Nine raised to the five-minus-two power?
bonufazy [111]

Answer:

1. 9 raised to the third power is 729

2. 4 raised the the power of 1 is 1

Step-by-step explanation:

9*9= 81*9=729

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8 0
3 years ago
Use technology to find points and then graph the line y=-5(x-5)+1 following the instructions below.
Svetach [21]

Given:

y=-5(x-5)+1

First, let us find two points from this equation.

We can set values of x and then solve for y.

Let us find the values of y when x = 1, 2, 3, 4, 5

\begin{gathered} y=-5(x-5)+1 \\ y=-5(1-5)+1=21 \\ y=-5(2-5)+1=16 \\ y=-5(3-5)+1=11 \\ y=-5(4-5)+1=6 \\ y=-5(5-5)+1=1 \end{gathered}

We now have a set of points:

(1, 21)

(2, 16)

(3, 11)

(4, 6)

(5, 1)

Since the given plane is limited to values of 10 and -10, the points that we can plot are the points (4, 6) and (5, 1)

The graph would then look like this:

6 0
1 year ago
HELPP plz in. 17 thank u so much
sergij07 [2.7K]
In the table, you can see level 1 is 5 to the first power, level 2 is 5 to the second and go on. 
so in level 6 would be 5 to the sixth power
so the answer to first one is 5^6 
for the second question you should know that level 2 is 5^2 and level 6 is 5^6 so 5^6/5^2 = 5^4 is the answer :))))
I hope this is helpful
have a nice day
6 0
3 years ago
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