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2 years ago

What is the value of -3to the power of 4?-128112-81

Mathematics

2 answers:

Andreyy892 years ago

4 0

Answer:

Step-by-step explanation:

im cracked

kumpel [21]2 years ago

4 0

Answer:

its -81 lol cause -3*-3*-3*-3= -81 trust me bro

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Which mapping shows a function

Alja [10]

The second one because there is all the inputs are different. There is one input for every output.

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3 years ago

Find the median of the following numbers: 195, 230, 200, 226

BlackZzzverrR [31]

Answer: 213

Step-by-step explanation: The median is the middle number

in the data set when the data set is written from least to greatest.

So let's start with writing ur data set from least to greatest.

So we have 195, 200, 226, 230.

Notice that there are two middle numbers.

If there are two middle numbers in the data set,

we find the median by taking their average.

In other words, we add the two middle numbers and divide by two.

So we have 200 + 226/2 or 426/2 which is 213.

3 0

3 years ago

A radio station claims that the amount of advertising per hour of broadcast time has an average of 13 minutes and a standard dev

zimovet [89]

Answer:

$Z = 3.33$

Step-by-step explanation:

Z-score:

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 question:

$\mu = 13, \sigma = 1.2$

You listen to the radio station for 1 hour, at a randomly selected time, and carefully observe that the amount of advertising time is equal to 17 minutes. Calculate the z-score for this amount of advertising time.

We have to find Z when X = 17. So

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

$Z = \frac{17 - 13}{1.2}$

$Z = 3.33$

5 0

3 years ago

Help what’s the answer

Tom [10]

The answer is 474 i believe

7 0

3 years ago

Find the value of x pls help

bogdanovich [222]

Answer: 90 degrees

Step-by-step explanation:

It is a right angle which means it is 90 degrees. Plz mark me brainliest

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3 years ago