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2 years ago

Round 425.979627029 to 3 decimal places.

Mathematics

2 answers:

butalik [34]2 years ago

8 0

Answer:

425.98

Step-by-step explanation:

3 decimal places is the thousands

When rounding to the thousandths place, you want to look at the ten-thousandths place to determining if you are going to increase the thousandths place, or keep it the same.

In this case, the ten-thousandths is greater than five, which means we are going to boost the 9 to a 10.

Because it is a ten, the thousandths place is now a zero and the hundredths place is now an 8.

When zero is your last digit in a decimal, you always take it off (unless referring to money, than keep the zero.)

That being said, the simplified answer is 425.98

Marat540 [252]2 years ago

5 0

Answer: 425.980

The 9 turns into a 0 and the 7 turns into 8

I think this is right I don't know you'll have to double check

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My bed is 3 inches by 2 3/4 inches by 1/3 inch. what is the volume of my bed?

Annette [7]

The volume of your bed would be about 2 1/4 inches because 3*2 3/4*
1/3 = about 2 1/4

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2 years ago

Find the coefficient of variation for each of the two sets of data, then compare the variation. Round results to one decimal pla

svp [43]

Here is the correct computation of the question given.

Find the coefficient of variation for each of the two sets of data, then compare the variation. Round results to one decimal place. Listed below are the systolic blood pressures (in mm Hg) for a sample of men aged 20-29 and for a sample of men aged 60-69.

Men aged 20-29: 117 122 129 118 131 123

Men aged 60-69: 130 153 141 125 164 139

Group of answer choices

Men aged 20-29: 4.8%

Men aged 60-69: 10.6%

There is substantially more variation in blood pressures of the men aged 60-69.

Men aged 20-29: 4.4%

Men aged 60-69: 8.3%

There is substantially more variation in blood pressures of the men aged 60-69.

Men aged 20-29: 4.6%

Men aged 60-69: 10.2 %

There is substantially more variation in blood pressures of the men aged 60-69.

Men aged 20-29: 7.6%

Men aged 60-69: 4.7%

There is more variation in blood pressures of the men aged 20-29.

Answer:

(c)

Men aged 20-29: 4.6%

Men aged 60-69: 10.2 %

There is substantially more variation in blood pressures of the men aged 60-69.

Step-by-step explanation:

From the given question:

The coefficient of variation can be determined by the relation:

$coefficient \ of \ variation = \dfrac{standard \ deviation}{mean}*100$

We will need to determine the coefficient of variation both men age 20 - 29 and men age 60 -69

To start with;

The coefficient of men age 20 -29

Let's first find the mean and standard deviation before we can do that ;

SO .

Mean = $\dfrac{\sum \limits^{n}_{i-1}x_i}{n}$

Mean = $\frac{117+122+129+118+131+123}{6}$

Mean = $\dfrac{740}{6}$

Mean = 123.33

Standard deviation $= \sqrt{\dfrac{\sum (x_i- \bar x)^2}{(n-1)} }$

Standard deviation = $\sqrt{\dfrac{(117-123.33)^2+(122-123.33)^2+...+(123-123.33)^2}{(6-1)} }$

Standard deviation = $\sqrt{\dfrac{161.3334}{5}}$

Standard deviation = $\sqrt{32.2667}$

Standard deviation = 5.68

The $coefficient \ of \ variation = \dfrac{standard \ deviation}{mean}*100$

$coefficient \ of \ variation = \dfrac{5.68}{123.33}*100$

Coefficient of variation = 4.6% for men age 20 -29

For men age 60-69 now;

Mean = $\dfrac{\sum \limits^{n}_{i-1}x_i}{n}$

Mean = $\frac{ 130 + 153 + 141 + 125 + 164 + 139}{6}$

Mean = $\dfrac{852}{6}$

Mean = 142

Standard deviation $= \sqrt{\dfrac{\sum (x_i- \bar x)^2}{(n-1)} }$

Standard deviation = $\sqrt{\dfrac{(130-142)^2+(153-142)^2+...+(139-142)^2}{(6-1)} }$

Standard deviation = $\sqrt{\dfrac{1048}{5}}$

Standard deviation = $\sqrt{209.6}$

Standard deviation = 14.48

The $coefficient \ of \ variation = \dfrac{standard \ deviation}{mean}*100$

$coefficient \ of \ variation = \dfrac{14.48}{142}*100$

Coefficient of variation = 10.2% for men age 60 - 69

Thus; Option C is correct.

Men aged 20-29: 4.6%

Men aged 60-69: 10.2 %

There is substantially more variation in blood pressures of the men aged 60-69.

4 0

2 years ago

You are tired at the end of the term and decide to borrow $500 to go on a trip to whatever land. You go to the bank and borrow t

seropon [69]

Answer:

A)55

B)110

Step-by-step explanation:500 /11%=55

55*2=110

3 0

2 years ago

Graph g(x), where f(x) = 4x − 2 and g(x) = f(x + 1)

BlackZzzverrR [31]

y = mx + b - it's a linear function.

Two points are enough to draw a graph of a linear function.

Step-by-step explanation:

Two different ways.

g(x) = f(x + 1) → put instead of x, x + 1 into function f(x) = 4x - 2:

g(x)=4(x + 1) - 2 <em>use the distributive property</em>

g(x) = 4x + 4 - 2

g(x) = 4x + 2

Choose any two x values. Put them into the equation g(x) = y and calculate the values of y.

x = -1

y = 4(-1) + 2 = -4 + 2 = -2 → (-1, -2)

x = 0

y = 4(0) + 2 = 0 + 2 = 2 → (0, 2)

The graph on the picture #1.

Use the transformation of a graph of a function:

f(x) + n - shift the graph of f(x) n units up

f(x) - n - shift the graph of f(x) n units down

f(x + n) - shift the graph of f(x) n units to the left

f(x - n) - shift the graph of f(x) n units to the right

f(x) = 4x - 2, g(x) = f(x + 1)

shift the graph of f(x) q unit to the left.

Plot the graph of function f(x).

Choose any two x values. Put them into the equation f(x) = y and calculate the values of y.

x = 0

y = 4(0) - 2 = 0 - 2 = -2 → (0, -2)

x = 1

y = 4(1) - 2 = 4 - 2 = 2 → (1, 2)

Plot the graph of f(x).

Shift it 1 unit to the left.

The graph on the picture #2.

3 0

2 years ago

HAVING BAD DAY HELP

ElenaW [278]

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8 0

2 years ago

Read 2 more answers