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3 years ago

The x-intercept of the line whose equation is 2x-3y=6 is.... 3 6 -2

Mathematics

1 answer:

alexira [117]3 years ago

8 0

Answer:

x = 3

Step-by-step explanation:

The x-intercept exists where y = 0. With that being said, we find the x-intercept by replacing y with 0 and doing the math:

2x - 3(0) = 6 and

2x = 6 so

x = 3

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Y=x^2-6x+7 from algebra nation

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3 years ago

Determine the margin of error, m , of a 99% confidence interval for the mean IQ score of all students with the disorder. Assume

madreJ [45]

Answer:

E= 6.45

standard deviation is σ = 15,

The critical value is z(α/2) = 2.58.

Step-by-step explanation:

Margin error is the value that is lie above and below the sample.It gives percentage of numbers.Its is the product of critical value standard deviation and standard error of statistic.

General formula for the margin of error is

Margin of error = critical value × standard error of statistic

= $z \alpha /2$ × σ √n

z-value from two tailed is listed below:

From the table of standard normal distribution, probability value of 0.10.

row and column values gives the area to the two tail of z.

The positive z value is 2.58.

standard deviation is σ = 15,

The critical value is z(α/2) = 2.58.

after putting these vales we obtain the margin of error value that is

E= 6.45

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3 years ago