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2 years ago

What is the value of i^n if the remember of n/4 is 2

Mathematics

1 answer:

mestny [16]2 years ago

3 0

Answer: 1

Step-by-step explanation:

If n/4 = 2, then n = 8

$i^8 = i*i*i*i*i*i*i*i\\i*i=-1\\i^8=(-1)(-1)(-1)(-1) = 1*1 = 1$

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Henry gross pay is $4000 a month. If he saves $500 of his pay, what percent of his pay does he save?

Makovka662 [10]

Answer:

12.5%

Step-by-step explanation:

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2 years ago

A population has a known standard deviation of 1.27 and a sample space contains 85 values find the margin of error needed to cre

r-ruslan [8.4K]

Answer:

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

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:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

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.

In this question:

$\sigma = 1.27, n = 85$

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

$M = 2.575*\frac{1.27}{\sqrt{85}}$

$M = 0.3547$

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

7 0

3 years ago

Name a pair of fractions that use the least common denominator and are equivalent to 9/10 + 5/6

grin007 [14]

The smallest common denominator is 30 in so
<span>9/10=27/30 and 5/6=25/30 are your answers ; ]</span>

6 0

2 years ago

Read 2 more answers

Rectangle A measures 8 inches by 4 inches. Rectangle B is a scaled copy

Savatey [412]

Rectangle B = 56inches by 28inches
It’s pretty easy you just multiply 8 by 7 and 4 by 7.

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2 years ago

What does it mean for statements to be logically equivalent?

nlexa [21]

Answer:

Two statement forms are called logically equivalent if they have identical truth values for each possible substitution for their statement variables.

Step-by-step explanation:

hope this helps <333

brainliest plz :) ?

8 0

1 year ago