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3 years ago

1/2(4x + 12) = 2 solve equation

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

8 0

Answer: x=-2

Step-by-step explanation:

Here is the step-by-step solving.

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Pls help will mark brainliest

monitta

Answer:

y x

Step-by-step explanation:

just guessing

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3 years ago

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Assume that a sample is used to estimate a population proportion μ . Find the margin of error M.E. that corresponds to a sample

hichkok12 [17]

Answer:

$MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\$

Step-by-step explanation:

Since the sample size is quite large, we can use the z-distribution.

The margin of error is given by

$MoE = z_{\alpha/2}(\frac{s}{\sqrt{n} } )$

Where n is the sample size, s is the sample standard deviation and $z_{\alpha/2}$ is the z-score corresponding to a 90% confidence level.

The z-score corresponding to a 90% confidence level is

Significance level = α = 1 - 0.90= 0.10/2 = 0.05

From the z-table at α = 0.05

z-score = 1.645

$MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\$

Therefore, the margin of error is 0.776.

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3 years ago

Supervisor: "Congratulations. You received a score of 3.4 on your annual review. Merit increases are given out starting at .5% a

Brut [27]

The employee will need to figure out how many groups of 0.4 points they have beyond a score of 2.6. To do this subtract 3.4 and 2.6.

3.4 - 2.6 = 0.8
This is two groups of 0.4.

So, 0.5% + 1% + 1%= 2.5 % pay increase.

8 0

3 years ago

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OMG I'M LITERALLY CRYING PLS HELP!!!!

zepelin [54]

The answer would be $25.22 the way to do this would be to divide 7.76 by 4 and then you would multiply that answer by 13 so it would be the 4th answer

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3 years ago

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Please solve with work much appreciated

mamaluj [8]

Answer:

0.046

Step-by-step explanation:

$\text{BAC} = \dfrac{10N - 7.5H}{6.8 M}$