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3 years ago

If 1/6x + 3 = 7 what is x

Mathematics

2 answers:

N76 [4]3 years ago

8 0

Step-by-step explanation:

The expression is 1/6x+3=7

1/6x+3=7

First, you subtract 3 from both sides

1/6x=4

Then you divide 1/6 from both sides

Dividing fractions is confusing, so I will show you how to do it

4/1 / 1/6

Because you can't divide 1 by 6, you KCF, or keep change flip.

You keep the 4/1, you change the operation to multiplication, and flip 1/6 to make it 6/1.

Now the problem is 4x6=24

So x=24

kotykmax [81]3 years ago

6 0

Answer:

x = 24

Step-by-step explanation:

1/6 x + 3 = 7

1/6 x = 4

x = 24

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For a sample variance of n = 36 that has a sample variance of 1,296, what is the estimated error for the sample?

lukranit [14]

Answer:

Step-by-step explanation:

Given :

Sample size, n = 36

Sample variance, s² = 1296

The estimated standard error can be obtained using the relation :

Standard Error, S. E = standard deviation / √n

Standard deviation, s = √1296 = 36

S.E = 36/√36

S.E = 36/6

S.E = 6

Hence, estimated standard error = 6

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3 years ago

9/11 of a number is 36. What is the number?

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Answer:

Step-by-step explanation:

$\frac{9}{11} x=36$

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

Solving inequalities for word problems:

zepelin [54]

For this case we have to:

x: Let the variable representing the unknown number

We algebraically rewrite the given expression:

Twice a number plus 10, is represented as: $2x + 10$

Three times that number less 4. is represented as:

$3x-4$

Thus, the complete expression is:

$2x + 10> 3x-4$

Subtracting 3x from both sides of the inequality:

$2x-3x + 10> -4\\-x + 10> -4$

Subtracting 10 from both sides of the inequality:

$-x> -4-10$

Equal signs are added and the same sign is placed:

$-x> -14$

We multiply by -1 on both sides, taking into account that the sense of inequality changes:

$x$

The solution is given by all values of "x" less than 14.

Answer:

$x$

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3 years ago