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2 years ago

Z to the power of 2 =1

Mathematics

1 answer:

stiv31 [10]2 years ago

3 0

That would be written as:

$z^{2} = 1$

And the step-by-step equation would be:

$z^{2} = 1$ → we take the 2 to the right side of the equation and do the IO*

$z = \sqrt{1}$ →we solve for $\sqrt{1}$

$z = 1$ → final answer

*Ps - IO is not an existing term and stands for inverse operation. In this case, because when we take to 2 to the right side of the equation (the 2 is a power) it'll have to turn into a square root (because exponents and roots are inverse operations)

Hope it helped,

BioTeacher101

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We evaluate the solutions by manipulating one of the equations into terms of the other. We use the first equation.We write x in terms of y.

x = (4.5/0.75) - y

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2 years ago

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A company produces precision 1 meter (1000 mm) rulers. the actual distribution of lengths of the rulers produced by this company

pogonyaev

Let X be the length of rulers. X follows Normal distribution with mean μ and standard deviation σ = 0.02. A sample of size n=4 is drawn from population and sample mean m=1000. We have to find 90% confidence interval for population mean μ.

Here population standard deviation is given to us so we will use z confidence interval for mean. It is given as

(Sample mean - Margin of error , Sample mean + Margin of error)

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For calculating confidence interval we consider positive z score value which is 1.645

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90% confidence interval for mean is

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1000- 0.01645, 1000+0.01645

(1000.01645, 999.9836)

Rounding interval upto 3 decimal places

(1000.016, 999.984)

90% confidence interval for population mean is (1000.016, 999.984)

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2 years ago

A square has a side length of 1.2 feet. If the square is dilated by a factor of 2.5, what is the length of a side of the new squ

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Answer:

Step-by-step explanation:

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2 years ago

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Answer:

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First convert mixed number to an improper fraction

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Find the unit rate

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2 years ago

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Answer:

Method 2:

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Method 1:

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1 year ago