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2 years ago

What is the value of the 2s in 42,256

Mathematics

2 answers:

Ne4ueva [31]2 years ago

6 0

The value of the 2 in the number is thousands. Hope that's what you're looking for.

Anna71 [15]2 years ago

4 0

2,000 and 200 are the values of the 2s in 42256

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There are four activities on the critical path, and they have standard deviations of 1, 2, 4, and 2. what is the probability tha

Anit [1.1K]

Standard deviations of the four activities of the critical path are 1,2,4,2.

Standard deviation of this critical path = Sum of square root of variance of this corresponding critical path

Standard deviation of critical path $=\sqrt{1^2+2^2+4^2+2^2}$

$=\sqrt{1+4+16+4}$

$=\sqrt{25}$

$=5$

Now we need to find the probability that the project will completed in 38 weeks given that its expected completion time is 40 weeks.

That is, we need to find P(X<38) :

$z=\frac{38-40}{5}= \frac{-2}{5}=-0.4$

$P(X$

Probability $=0.5-0.16=0.34$

Thus the probability that the project will be completed in 38 weeks is 0.34.

8 0

2 years ago

Read 2 more answers

A paint shop stocks 1800 liters of paint 24% of the paint is white. The shops sells 18% of the white paint and 7% of the rest of

Anuta_ua [19.1K]

Answer:The amount of paint that was sold altogether is 173.36 litres

Step-by-step explanation:

The total amount of paint that the paint shop stocks is 1800 litres.

24% of the paint is white. It means that the amount of white paint would be

24/100 × 1800 = 0.24 × 1800 = 432 litres.

The amount of the remaining paint other than white would be

1800 - 432 = 1368 litres

The shops sells 18% of the white paint. This means that the amount of white paint sold by the shop will be

18/100 × 432 = 0.18 × 432 = 77.6 litres.

The shops sells 7% of the rest of the paint.

This means that the amount of the rest paint sold by the shop will be

7/100 × 1368 = 0.07 × 1368 = 95.76 litres.

The amount of paint that was sold altogether would be

77.6 + 95.76 = 173.36 litres

5 0

2 years ago

The table represents the equation y = 2 – 4x. A 2-column table with 5 rows. The first column is labeled x with entries negative

kherson [118]

The missing value for $x=-1$ is $y=6$

Explanation:

It is given that the equation for the table is $y=2-4x$

The table has 2 column with 5 rows.

Thus, we have,

x y

-2 10

-1 ---

0 2

1 -2

2 -6

We need to determine the value of y when $x=-1$

The value of y can be determined by substituting $x=-1$ in the equation $y=2-4x$

Thus, we have,

$y=2-4(-1)$

Multiplying the term within the bracket, we have,

$y=2+4$

Adding the terms, we have,

$y=6$

Thus, the value of y when $x=-1$ is 6.

Hence, the missing value for $x=-1$ is $y=6$

7 0

1 year ago

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A craft stick fits exactly on the diagonal across the bottom of the rectangular craft box shown in the diagram below.

enyata [817]

Well first you got to add up of the sides

6 0

2 years ago

According to a "how to stop bullying" Web site, 15% of students report experiencing bullying one to three times within the most

AlekseyPX

Answer:

His 95% confidence interval is (0.065, 0.155).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 186, \pi = 0.11$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 - 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.065$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 + 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.155$

His 95% confidence interval is (0.065, 0.155).

4 0

1 year ago