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7 months ago

How to solve and answer:1 1/3(9-6x)=-11

Mathematics

2 answers:

Y_Kistochka [10]7 months ago

6 0

Answer:

x = 2.875

Step-by-step explanation:

1 1/3 (9 - 6x) = -11

12 - 8x = -11

- 8x = -23

x = 2.875

EleoNora [17]7 months ago

3 0

Solving an equation like this means to find the value of the variable. Here, the variable is x. Solve the left side normally.

Given: 1/3(9 - 6x) = -11
Distribute: 1/3(9) + 1/3(-6x) = -11
When operating with constant numbers on a variable term, apply affects of the operation on the coefficient. So, 1/3(-6x) = -2x.
3 - 2x = -11
Isolate the variable: 3 - 3 - 2x = -11 - 3
-2x = -14
Since these are both negative, we can convert them both to being positive.
2x = 14
Simplify: 2x/2 = 14/2
<u>x = 7</u>

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Answer:

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Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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This is n for which M = 0.015.

We have that $\pi = 0.2$

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$0.015\sqrt{n} = 2.81\sqrt{0.2*0.8}$

$\sqrt{n} = \frac{2.81\sqrt{0.2*0.8}}{0.015}$

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Answer:

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Step-by-step explanation:

Given data

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