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2 years ago

Nick score on six scientist are listed below 87,93,82,91,93,85

Mathematics

1 answer:

exis [7]2 years ago

7 0

Answer:

Mean of original test scores is 88.5

Mean of test scores , with three marks added to each score is 91.5

The mean of the test score with three marks added to each score is higher than the original mean of score is increased by three .

Explanation : hope it works out !!

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A rectangular swimming pool is twice as long as it is wide. A small concrete sidewalk surrounds the pool and is a constant 2 fee

Naddika [18.5K]

Answer:

The dimensions of the pool are:

Width: 8.944 feet

Length: 17.888 feet

Step-by-step explanation:

From Geometry, the area of a rectangle ( $A$ ), measured in square feet, is determined by the following equations:

$A = w\cdot l$ (1)

Where:

$w$ - Width, measured in feet.

$l$ - Length, measured in feet.

If we know that $w = x$ , $l = 2\cdot x$ and $A = 160\,ft^{2}$ , then we get the following second order polynomial:

$2\cdot x^{2}-160 = 0$ (1)

And we solve the expression for $x$ :

$2\cdot x^{2} = 160$

$x^{2} = 80$

$x = \sqrt{80}\,ft$

$x \approx 8.944\,ft$

Then, the dimensions of the pool are, respectively:

$w \approx 8.944\,ft$ and $l \approx 17.888\,ft$

5 0

2 years ago

Use the intermediate value theorem to choose an interval over which the function, f(x)=2x^3 - 3x +5 is guaranteed to have a zero

Sergio039 [100]

Answer:

The answer is c. {0,2).

Step-by-step explanation:

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3 years ago

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Annie wants to arrange her science, English, and math text books in a row on a shelf. Which tree diagram best shows the sample s

Olenka [21]

Answer: The Correct Answer is A! I'm not very good at explaining but I already took the test, You can go look at the other questions for an explanation. :)

- Hope this Helps! ♥️

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2 years ago

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How can 6.75 + (-10.25) be expressed as the sum of its integer and decimal part

attashe74 [19]

There you go please brainliest thanks!

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3 years ago

Whats 1500x1500+(1/5- 2/6) divided by 28=?

Ilya [14]

Answer:

2249999.99524

Step-by-step explanation:

The answer would be 2249999.99524

Or just 224999

Sorry for the last answer!

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2 years ago