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2 years ago

Y=5/2x−8

Mathematics

2 answers:

ElenaW [278]2 years ago

7 0

The answer will be 0,-8

Levart [38]2 years ago

3 0

One solution: (0,-8) is the answer

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0.21 times 10 to the power of 6 standard form

skelet666 [1.2K]

Answer:

0.000000210 x 10^{6}=0.21

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2 years ago

If y varies directly as x and y = 64 when x = 16, what is the value of y when x = 12 ?

rusak2 [61]

Answer: Y=48

Y is 4 times more than x. If x=12, y=48. Notice in the first part of the question, if you divide 64 by 4, you get 16. This means in order to get your answer, you must mulitiply x by 4 to get y. 12x4=48.

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2 years ago

Solve for slope / y intercept and equation

matrenka [14]

Answer:

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Step-by-step explanation:

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2 years ago

Banking fees have received much attention during the recent economic recession as bankslook for ways to recover from the crisis.

luda_lava [24]

Answer:

The margin of error for a 90% confidence interval for the mean banking fee is of $0.44.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.9}{2} = 0.05$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.05 = 0.95$ , so Z = 1.645.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Sample of 31:

This means that $n = 31$

Assume the population standard deviation is $1.50.

This means that $\sigma = 1.5$

Calculate the margin of error for a 90% confidence interval for the mean banking fee.

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.645\frac{1.5}{\sqrt{31}}$

$M = 0.44$

The margin of error for a 90% confidence interval for the mean banking fee is of $0.44.

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2 years ago

Please help me really important

Irina18 [472]

I hope that you will understood my writing

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3 years ago