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3 years ago

I am giving a lot of points lease give explanation

Mathematics

1 answer:

Sauron [17]3 years ago

5 0

Answer:

Calculate the speed of a wave that has a wavelength of 8 meters and a frequency of 16 meters per second (m/s).

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The area of a rectangular

tankabanditka [31]

Answer:

2x+5

Step-by-step explanation:

Okay so lets first factor 2x^2+15x+25

2*25=50

10+5=15

10*5=15

(x+10/2)(x+5/2)

=(x+5)(2x+5)

we know that the width is x+5 so that means the length has to be 2x+5

3 0

2 years ago

A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la

vodka [1.7K]

Answer:

The 96% confidence interval for the population proportion of customers satisfied with their new computer is (0.77, 0.83).

Step-by-step explanation:

We have to calculate a 96% confidence interval for the proportion.

We consider the sample size to be the customers that responded the survey (n=800), as we can not assume the answer for the ones that did not answer.

The sample proportion is p=0.8.

$p=X/n=640/800=0.8$

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.8*0.2}{800}}\\\\\\ \sigma_p=\sqrt{0.0002}=0.014$

The critical z-value for a 96% confidence interval is z=2.054.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_p=2.054 \cdot 0.014=0.03$

Then, the lower and upper bounds of the confidence interval are:

$LL=p-z \cdot \sigma_p = 0.8-0.03=0.77\\\\UL=p+z \cdot \sigma_p = 0.8+0.03=0.83$

The 96% confidence interval for the population proportion is (0.77, 0.83).

4 0

3 years ago

A store manager sets up a cardboard display to advertise a new brand of perfume the display is a square peer amid whose base is

____ [38]

This answer is most likely wrong, but this is what I had gotten.
Using the formula BxH divided by 2, I came up with an answer of 108.

8 0

3 years ago

Read 2 more answers

A bag contain 3 white balls, 4 blue balls and 2 red balls. Two balls are to be taken at random from the bag. The first ball is n

Liono4ka [1.6K]

Answer:

a)the first ball taken will be blue

3 0

3 years ago

240 people are going to a charity event. 3/5 of the guests have ordered chicken for their meals. Of the remaining guests, 12.5%

fiasKO [112]

Answer:

Step-by-step explanation:

5 0

3 years ago