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aleksley [76]
3 years ago
6

What's the variable for 3(5x + 2)=8x + 20

Mathematics
2 answers:
sp2606 [1]3 years ago
6 0

3(5x+2)=8x+20

15x+6=8x+20

15x-8x=20-6

7x=14

then you divide both sides by 2

The answer is 2.

Tanzania [10]3 years ago
5 0
<span>3(5x + 2)=8x + 20
Use distributive property
15x + 6=8x + 20
Subtract 8x from 15x so that the variable x is only on one side.
7x + 6= 20
Subtract 6 from both sides
7x = 14
Divide 7 on both sides so that the only thing remaining on the left side is the variable x.
Final Answer: x= 2</span>
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xz_007 [3.2K]

Answer:

<h2>B) 26 cm</h2>

Step-by-step explanation:

Look at the picture.

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hypotenuse^2=leg^2+leg^2

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Answer:

Step-by-step explanation:

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Week 1: 600

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Week 4: 900

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Step 1. Jim enters the data and calculates the average or mean.

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Step 2. Jim calculates the deviation from the mean by subtracting the mean from each value.

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600                                                                           25

300                                                                         -275

500                                                                         -75

900                                                                          325

Step 3. Jim squares each deviation to remove negative signs.

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600                                                                       625

300                                                                    75625

500                                                                      5625

900                                                                   105625

Step 4. Jim sums the squares of each deviation and divides by the count for the variance.

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Step 5.Jim takes the square root of the variance to find the standard deviation.

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