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olasank [31]
2 years ago
13

What is the rectangular form of 17(cos(315°) + isin(315°))?

Mathematics
2 answers:
Arlecino [84]2 years ago
7 0

Answer:

A

Step-by-step explanation:

EDG2021

Dmitriy789 [7]2 years ago
5 0

Answer:

it is answer A. I did the test bro :)

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An Epson inkjet printer ad advertises that the black ink cartridge will provide enough ink for an average of 245 pages. Assume t
Neko [114]

Answer:

35.2% probability that the sample mean will be 246 pages or more

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 245 \sigma = 15, n = 33, s = \frac{15}{\sqrt{33}} = 2.61

What the probability that the sample mean will be 246 pages or more?

This is 1 subtracted by the pvalue of Z when X = 246. So

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

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{246 - 245}{2.61}

Z = 0.38

Z = 0.38 has a pvalue of 0.6480.

1 - 0.6480 = 0.3520

35.2% probability that the sample mean will be 246 pages or more

4 0
3 years ago
4/3 (4•5)} = 203 <br><br> ? = 203
Marta_Voda [28]

Answer:

4/3 (4•5)} = 203

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
600 thousands = how many tens?
san4es73 [151]
The answer is 60,000. because it would equal six hundred thousand, and that divided by 10 is 60,000
8 0
3 years ago
Two families go skiing on a Saturday. One family purchases three adult lift tickets and four lift tickets for $188. Another fami
Mnenie [13.5K]

Answer:using elimination to solve for x

9x +6y = 3*134    | Multiplying 1st equation by 3

-4x -6y = -2*146   | Multiplying 2nd equation by -2

   5x = 3*134 - 2*146

   5x = $110

    x = $22,  the cost of the youth ticket

Step-by-step explanation:This question Sets Up two equations with 2 unknowns        

Let x and y represent the cost of the youth and adult ticket respectively

Question states***

3x + 2y = $134    

2x + 3y = $146

7 0
3 years ago
Which shows the list of Numbers in order from least to greatest? 1421,1-6.11-2,135 0 -2, 11, 1351, 1-4 21. O-2.1-4).-4,1351,1-42
Alexxandr [17]

Answer:

this one is least to greatest -4 -11-2, 1421​

Step-by-step explanation:

you have to do the least number to the greatest so a negative number would be least but you can't get confused you have to do the east number.

3 0
3 years ago
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