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2 years ago

The mean vitamin C level for 20 dogs was 7.6 milligrams per liter, with a standard deviation of 2.1 milligrams per liter.

Mathematics

1 answer:

SpyIntel [72]2 years ago

5 0

Answer: The mean increases.

Step-by-step explanation:

The value of 0.9 mg/L is very low compared to a means of 7.6 mg/L with a standard deviation of 2.1 mg/L. It seems as though it is an outlier that is suffiently different from the others, and probably should be dropped from the data set. That would do 2 things: 1) the stabdard deviation will likely decrease, indicating a more confident data set, and 2) the mean vitamin C level will increase.

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Find the length of side x to the nearest tenth. х 600 30° 17

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Answer:

5.3

Step-by-step explanation:

Stare at the triangle for a bit. And try to add another one sharing the unmarked angle. You end up with an equilateral triangle. It means $\sqrt7$ is half the hypotenuse, At this point,

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2 years ago

Factor the expression 3x²-7x+4 completely

jeyben [28]

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Step-by-step explanation:

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9 students in a class of 80 will attend a movie at Cinemark Movie Theater. What percent of the class will attend the movie at Ci

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2 years ago

In 2018, there were about 41 million teenagers (ages 10-19) in the United States. They each sent an average of 800 text messages

Allushta [10]

Answer:

3.28*10^(10) text messages.

Step-by-step explanation:

We know that there are about 41,000,000 teenagers in the US.

If each one of they sent an average of 800 text messages, then the total number of text messages sent in a month is something about:

Total number of messages = 41,000,000*800 = 32,800,000,000

Now we want to write this in scientific notation.

To do it, we need to count the number of digits at the left of the decimal point, if there are N total digits, we can write our number as:

3.28*10^(N - 1)

Where we now have only one digit at the left of the decimal point.

Here we have 11 digits.

Then we can write this number as:

3.28*10^(11 - 1)

3.28*10^(10)

5 0

2 years ago

The area of a rectangle driveway is 2X squared +15 X +25. The width of the driveway is X +5. What is the length of the drivewa

leonid [27]

Answer:

The length of the driveway = 2x+5

Step-by-step explanation:

The area of the rectangle is the length times the width.

Given:

The area of a rectangle ⇒ 2X²+15 X +25

The width of the driveway ⇒ X+5

Area = length * width

length = area/width

∴ length = $\frac{2x^{2}+15 x+25}{x+5} = \frac{(2x+5)(x+5)}{x+5} = 2x+5$

So, the length of the driveway = 2x+5

3 0

3 years ago