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frez [133]
3 years ago
9

How many real roots and how many complex roots does this expression have? (x+7)^7

Mathematics
1 answer:
Feliz [49]3 years ago
3 0

Answer:

One real root, with multiplicity 7.

Step-by-step explanation:

The given expresion is

{(x + 7)}^{7}

This is a seventh degree polynomial.

According to the fundamental theorem of Algebra, the expression has a potential 7 roots both real and complex.

This expression has one real root, with multiplicity , 7.

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Your petty cash has a balance of $73.28. Your Center Manager provides you with two receipts totalling $52.29. How much cash rema
Dvinal [7]

Answer:

Cash remaining in the petty cash box = 20.99 dollars

Explanation:

Given that,

Petty cash has a balance of = 73.28 dollars

Total receipt = 52.29 dollars

We need to find the remaining petty cash .

In order to find out the remaining cash, we will subtract total receipt from Petty cash balance.

Cash remain = Petty cash balance - total receipt

Cash remain = $73.28 - $52.29

Cash remain = 20.99 dollars

That's the final answer.

I hope it will help you.

4 0
3 years ago
Which angle below is another name for ZABC?
Liula [17]
Answer is none of these
5 0
3 years ago
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in t
andreyandreev [35.5K]

Answer:

The test statistic is c. 2.00

The p-value is a. 0.0456

At the 5% level, you b. reject the null hypothesis

Step-by-step explanation:

We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes.

This means that the mean and the alternate hypothesis are:

Null: H_{0} = 3

Alternate: H_{a} = 3

The test-statistic is given by:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

Sample of 100 customers.

This means that n = 100

3 tested at the null hypothesis

This means that \mu = 3

The average length of time it took the customers in the sample to check out was 3.1 minutes.

This means that X = 3.1

The population standard deviation is known at 0.5 minutes.

This means that \sigma = 0.5

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{3.1 - 3}{\frac{0.5}{\sqrt{100}}}

z = 2

The test statistic is z = 2.

The p-value is

Mean different than 3, so the pvalue is 2 multiplied by 1 subtracted by the pvalue of Z when z = 2.

z = 2 has a pvalue of 0.9772

2*(1 - 0.9772) = 2*0.0228 = 0.0456

At the 5% level

0.0456 < 0.05, which means that the null hypothesis is rejected.

7 0
3 years ago
Of the 50 plays attributed to a​ playwright, 11 are​ comedies, 19 are​ tragedies, and 20 are histories. If one play is selected
Cerrena [4.2K]
The answer is 3/5, or 60%

11 (comedies) + 19 (tragedies) = 30
30/50 = 3/5, or 60%
3 0
3 years ago
Convert 3π into degrees
fiasKO [112]
3π = 540 Degrees
Hope it helped :)
7 0
3 years ago
Read 2 more answers
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