Ive been on this question for a and b for like 2 hours

Mathematics

1 answer:

Fed [463]3 years ago

6 0

Answer:

I am sorry!

Step-by-step explanation:

I don't think I can answer this due to the guidelines of brainly and I do not want to get banned. Please refrain yourself from asking questions that are on tests.

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The Greek letter iota, i, represents the square root of -1 (). We call i an imaginary unit. Any number that is a product of a re

Nadusha1986 [10]

Happy New Year from MrBillDoesMath!

Answer:

i ^ (2n) = (i^2)^n = (-1)^n = -1 if n is odd and = 1 if n is even

i ^ (2n+1) = i^(2n)* i = -1 * i = -i if n is odd and = 1*i = i if n is even

Not sure if this answers your question but hopefully pushes you n the right direction.

Thank you,

MrB

4 0

3 years ago

Read 2 more answers

A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121. Incorrect Round

Neko [114]

Answer:

The z-score for a data value of 121 is -2.29.

Step-by-step explanation:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 137, \sigma = 7$