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Ahat [919]
3 years ago
14

I need help please???

Mathematics
1 answer:
Lesechka [4]3 years ago
4 0

Answer is on the attached sheet! :)

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Simplify the following. (the answer is not 0)
Delvig [45]

Answer:10

Step-by-step explanation:

4[5+2(6-6)]-5[4(4-3)-4+2]=20-5[4-2]=10

3 0
4 years ago
Read 2 more answers
Arnold began working at a coffee shop on April first. Ms.Ware, his new boss, told Arnold he would earn $2,500 each month if he w
zavuch27 [327]
Net income is after tax so D) 2,150
8 0
3 years ago
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Barrons reported that the average number of weeks an individual is unemployed is 17.5 week. assume that for the population of al
slega [8]

Answer:

\mu = 17.5

\sigma = 4

n = 50

A) show the sampling distribution of x, the sample mean average for a sample of 50 unemployment individuals.

We will use central limit theorem

So, mean of sampling distribution = \mu_{\bar{x}}=\mu = 17.5

Standard deviation of sampling distribution = \sigma_{\bar{x}}=\frac{\sigma}{\sqrt{n}}= 0.5656

B) What is the probability that a simple random sample of 50 unemployment individuals will provide a sample mean within one week of the population mean?

A sample mean within one week of the population mean means x-\mu = 1

So, P(|x-\mu|

=P(\frac{-1}{\frac{4}{\sqrt{50}}}

=P(-1.77

=P(z

=0.9616-0.0384

=0.9232

The probability that a simple random sample of 50 unemployment individuals will provide a sample mean within one week of the population mean is 0.9232.

C) What is the probability that a simple random sample of 50 unemployed individuals will provide a sample mean within a half week of the population mean?

A sample mean within one week of the population mean means x-\mu = 1

So, P(|x-\mu|

=P(\frac{-1-0.5}{\frac{4}{\sqrt{50}}}

=P(-0.88

=P(z

=0.8106-0.1894

=0.6212

The probability that a simple random sample of 50 unemployed individuals will provide a sample mean within a half week of the population mean is 0.6212

3 0
4 years ago
Which is the graph of fx x2 2x 3
photoshop1234 [79]

In the picture we can see the graph represents of the function f(x)=x²-2x+3 that is curve graph.

Given that,

We have to find the graph represents the function f(x)=x²-2x+3.

We know that,

The quadratic function is f(x)=x²-2x+3.

This is a vertical parabola open downward

The vertex is a maximum

We know,

A vertical parabola's equation in vertex form is equal to

y= a(x-h)²+k

where

a is a coefficient

(h,k) is the vertex

Here

a=1

(h,k)=(0,3)  is vertex

The y-intercept is the point (0,3) is value of y when the value of x is equal to zero (is the same point that the vertex)

The x-intercepts are the points is values of x when the value of y is equal to zero  

Therefore, In the picture we can see the graph represents of the function f(x)=x²-2x+3.

To learn more about function visit: brainly.com/question/9554035

#SPJ4

7 0
1 year ago
Please answer my question
Alexandra [31]

Answer:

4) 0

5) 30.5 and 60.5

6) 30.5 through 80.5

Step-by-step explanation:

The box plot is split into 4 parts, the first 25% of it (1/4 of 100) is 0.

Q stands for quarter (1/4) so Q1=30.5 because of where the first dot hits, and Q3=60.5 because of where the 3rd dot hits.

The dot plot goes from 30.5 through 80.5.

I hope this makes sense and helps you!

5 0
3 years ago
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