Two different cross sections are taken parallel to the base of a three-dimensional figure. The two cross sections are the same shape, but are not congruent. Which could be the three-dimensional figure? select three options.

The product AB is equal to [-7 28], while the product BA = [0 2].

To find AB and BA, we need to multiply the given matrices A and B.

Given,

A = [2 1 5 1]

B = [1 -2 -2 6]

To find AB, we multiply A with B in the order AB.

AB = A x B

= [2 1 5 1] x [1 -2 -2 6]

= [(2 x 1) + (1 x (-2)) + (5 x (-2)) + (1 x 6), (2 x (-2)) + (1 x 1) + (5 x 6) + (1 x (-2))]

= [-7, 28]

Therefore, AB = [-7 28]

To find BA, we multiply B with A in the order BA.

BA = B x A

= [1 -2 -2 6] x [2 1 5 1]

= [(1 x 2) + (-2 x 1) + (-2 x 5) + (6 x 1), (1 x 1) + (-2 x 5) + (-2 x 1) + (6 x 1)]

= [0 2]

Therefore, BA = [0 2] ,

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Answer:

((4 + 10)/2, (5 + (-3))/2) = (14/2, 2/2) = (7, 1)

The positive difference between 4 and 9 is 9 - 4 = 5.

To find the maximum quotient between the digits 4 and 9, we divide the larger digit (9) by the smaller digit (4). The quotient is 9 ÷ 4 = 2.25.

Now, to find the product of the positive difference and the maximum quotient, we multiply 5 by 2.25:

[tex]5*2.25 = 11.25[/tex]

This means that 11.25 is the result of multiplying the extent of the numerical difference between 4 and 9 by the maximum possible ratio between the two digits.

Therefore, the product of the positive difference and the maximum quotient between the digits 4 and 9 is 11.25.

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Yes.

The data are from a random sample, meeting the Randomization Condition.

The data have at least 10 successes and 10 failures, meeting the Success/Failure Condition.

The population is much larger than the sample, meeting the 10% Condition. A

It is reasonable for the research team to use a Normal model for the sampling distribution of the sample proportion.

A Normal model for the sampling distribution of a sample proportion, three conditions must be met:

The Randomization Condition, the Success/Failure Condition, and the 10% Condition.

The Randomization Condition is met as the sample is selected randomly from a much larger population of adults.

The Success/Failure Condition is also met because the sample size is large enough (n = 1900) for us to expect at least 10 successes (those who are pessimistic about the future of marriage and family) and 10 failures (those who are optimistic about the future of marriage and family).

The sample proportion of pessimistic adults is 34%, which corresponds to 646 successes in the sample.

The 10% Condition is also met as the sample size (n = 1900) is less than 10% of the total population of adults.

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The area of the composite figure is equal to 62.5 square meters

The composite figure can be observed to be made up of a big rectangle, a smaller rectangle, and a triangle. We calculate for the area of the three shape and sum the results to get the total area of the composite figure as follows:

area of the big rectangle = 7 m × 4 m = 28 m²

area of the smaller rectangle = 5 m × 2 m = 10 m²

area of the triangle = 1/2 × 7 m × 7 m = 24.5 m²

total area of the composite figure = 28 m² + 10 m² + 24.5 m²

total area of the composite figure = 62.5 m²

Therefore, the area of the composite figure is equal to 62.5 square meters

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Answer: 78539.82

My explanation is listed bellow

V=πr2h=π·252·40≈78539.81634

The probabilities of the given events for all four children are girls is 0.0625, two girls and two boys is 0.375, the youngest child is a girl is 0.5 and the oldest child is a boy is 0.5

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, where 0 represents an impossible event and 1 represents a certain event.

Since the probability of giving birth to a boy or a girl is 0.5, we can use the binomial probability formula to calculate the probabilities of the given events:

1) Probability of all four children being girls:

The probability of having a girl for each birth is 0.5, so the probability of having all four children as girls is (0.5)⁴ = 0.0625 or 6.25%.

2) Probability of having two girls and two boys:

The number of ways to have two girls and two boys in a family of four children is the number of combinations of 4 children taken 2 at a time, which is 6. The probability of having two girls and two boys in any of these combinations is (0.5)⁴ = 0.0625 or 6.25%. Therefore, the probability of having two girls and two boys is 6 * 0.0625 = 0.375 or 37.5%.

3) Probability of the youngest child being a girl:

The probability of having a girl for any birth is 0.5, so the probability of the youngest child being a girl is 0.5.

4) Probability of the oldest child being a boy:

Since there are 2 possibilities for the gender of the oldest child (boy or girl), the probability of the oldest child being a boy is 0.5.

Therefore, the probabilities of the given events are:

All four children are girls: 0.0625 or 6.25%

Two girls and two boys: 0.375 or 37.5%

The youngest child is a girl: 0.5 or 50%

The oldest child is a boy: 0.5 or 50%

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The side length of s 2 is approximately 1541.33 units. We can round that to the nearest unit if needed.

To find the side length of s 2 in units, we need to use the information given about the dimensions of the overall rectangle formed by combining the rectangles and squares.

We know that the overall rectangle is 3322 units wide and 2020 units high. Let's start by looking at the width. We can see that the width is made up of two squares (s 1 and s 3) and one rectangle (r 2). So we can set up an equation to represent this:

width = (side length of s 1) + (length of r 2) + (side length of s 3)

width = s + l + s

where s is the side length of each square and l is the length of r 2.

Similarly, we can look at the height of the overall rectangle. We can see that the height is made up of two rectangles (r 1 and r 2) and one square (s 2). So we can set up another equation:

height = (length of r 1) + (length of r 2) + (side length of s 2)

height = l + l + s

Now we can use these two equations to solve for the side length of s 2. We know that the width is 3322 units and the height is 2020 units, so we can substitute those values into the equations:

3322 = s + l + s

2020 = 2l + s

We can simplify the first equation by combining like terms:

3322 = 2s + l

Now we can use substitution to solve for s. We can rearrange the second equation to solve for l:

l = (2020 - s) / 2

Then we can substitute that expression for l into the first equation:

3322 = 2s + (2020 - s) / 2

Now we just need to solve for s:

6644 = 4s + 2020 - s

4624 = 3s

s = 1541.33

So the side length of s 2 is approximately 1541.33 units. We can round that to the nearest unit if needed.

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The values of W and X that make NOPQ a parallelogram are:

W = -5w + 11

X = 3x

A quadrilateral with two sets of parallel sides is referred to as a parallelogram. In a parallelogram, the opposing sides are of equal length, and the opposing angles are of equal size.

To determine the values of W and X that make NOPQ a parallelogram, we need to find the conditions under which the opposite sides of the quadrilateral are parallel.

The coordinates of the points N, O, P, and Q are given as follows:

N: (w+7, 5w-5)

O: (3/2x, 3)

P: (?, ?)

Q: (?, ?)

For NOPQ to be a parallelogram, the vector from N to O should be equal to the vector from P to Q, and the vector from O to P should be equal to the vector from Q to N.

The vector from N to O is:

NO = (3/2x - (w+7), 3 - (5w-5))

   = (3/2x - w - 7, -5w + 8)

The vector from O to P should be equal to the vector from Q to N. Thus:

OP = (P_x - (3/2x), P_y - 3)

QN = ((w+7) - Q_x, (5w-5) - Q_y)

Equating the corresponding components, we get the following equations:

3/2x - w - 7 = P_x - (3/2x)

-5w + 8 = P_y - 3

w + 7 = (w+7) - Q_x

5w - 5 = (5w-5) - Q_y

Simplifying these equations, we find:

P_x = 3x

P_y = -5w + 11

Q_x = w + 7

Q_y = 5w

Therefore, the values of W and X that make NOPQ a parallelogram are:

W = -5w + 11

X = 3x

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Answer:

there're many ways to solve it, I don't know what the teacher is looking for, but I think the answer could be

1x^3=1

but I'm not sure about it

Answer:

The number 1 can be classified as: a natural number, a whole number, a perfect square, a perfect cube, an integer. This is only possible because 1 is a RATIONAL number.

Step-by-step explanation:

if it helped u please mark me a brainliest :-))

Answer: 38 3/4 or 38.75

Step-by-step explanation:

multiply 3 1/2 * 5 = 17 1/2

multiply 4 1/4 * 5 = 21 1/4

add the 2

=38 3/4

An appropriate chart title would be "2017 Sales vs Budget".

What is graphical representation?

A graphical representation is a way of presenting data or information visually using charts, graphs, diagrams, or other visual aids.

To create a thermometer chart that compares total monthly sales to the budgeted amounts for 2017 in Excel, you can follow these steps:

1) Select the data range you want to use for the chart, including both the total monthly sales and budgeted amounts.

2) Go to the Insert tab in the Excel ribbon, click on the Recommended Charts button, and choose the "All Charts" tab.

3) Select the Thermometer chart type under the column chart section, and click OK.

4) You will now have a basic thermometer chart. Right-click on the chart, and select "Select Data" from the context menu.

5) In the "Select Data Source" dialog box, click the "Add" button to add a new series.

6) In the "Edit Series" dialog box, enter "Budgeted Sales" as the series name, and select the budgeted amounts data range as the series values. Click OK to close the dialog box.

7) In the "Select Data Source" dialog box, click the "Switch Row/Column" button to swap the X and Y axes. This will place the months along the vertical axis and the sales amounts along the horizontal axis.

8) Click on the OK button to close the "Select Data Source" dialog box.

9) With the chart selected, go to the Design tab in the Excel ribbon, and click on the "Switch Row/Column" button again to swap the axes back to their original positions.

10) Click on the chart to select it, and then go to the Format tab in the Excel ribbon.

11) In the "Current Selection" group, select the "Sales" series by clicking on one of its bars. Then right-click and select "Change Series Chart Type".

12) In the "Change Chart Type" dialog box, select "Clustered Column" chart type and click OK.

13) Select the "Budgeted Sales" series, right-click on it, and choose "Format Data Series".

14) In the "Format Data Series" pane that appears on the right, change the "Plot Series On" option to "Secondary Axis".

15) In the same pane, change the "Gap Width" option to a smaller value, such as 50%, to make the bars narrower.

16) Go to the "Axes" section in the same pane, and check the "Secondary Axis" option for the Y-axis.

17) Go to the "Chart Title" section in the same pane, and enter an appropriate chart title, such as "2017 Sales vs Budget".

18) Adjust the chart layout and formatting as desired, and the thermometer chart is now complete.

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Step-by-step explanation:

Right triangles obey Pythagorean theorem :

?^2  = 2^2 + 9^2

?^2 = 85

? = sqrt 85  ft

Answer:

85ft

Step-by-step explanation:

Probability of winning race is 5/12 shows odds against horse winning for every 7 times horse is expected to lose it is expected to win 5 times.

Probability of horse win the race= 5/12

The odds against the horse winning,

First calculate the probability of the horse losing.

Since there are only two possible outcomes winning or losing.

Find the probability of losing by subtracting the probability of winning from 1,

P(losing) = 1 - P(winning)

⇒P(losing) = 1 - 5/12

⇒P(losing) = 7/12

This means that the probability of the horse losing is 7/12.

The odds against the horse winning can be expressed as a ratio of the probability of losing to the probability of winning.

odds against winning = P(losing) / P(winning)

Substituting the probabilities we calculated, we get,

odds against winning = 7/12 / 5/12

⇒odds against winning = 7/5

Therefore, as per the probability of winning the odds against the horse winning are 7 to 5.

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The total revenue obtained in the first four years for the function f(t)=9000√1+2t is equal to $78,000.

Rate at which revenue flows into a company

f(t)=9000√1+2t

where time t is measured in years

and f(t) is measured in dollars per year.

The total revenue obtained in the first four years,

Integrate the revenue function f(t) from t=0 to t=4.

Total revenue = [tex]\int_{0}^{4}[/tex] f(t) dt

Substituting the given function, we get,

Total revenue = [tex]\int_{0}^{4}[/tex] 9000√(1+2t) dt

Simplify this by making the substitution

u = 1 + 2t,

⇒ du/dt = 2

⇒ dt = du/2.

When t=0, u=1 and when t=4, u=9.

Using this substitution, we can rewrite the integral as,

Total revenue = [tex]\int_{1}^{9}[/tex] 9000√u  (du/2)

Total revenue = 4500  [tex]\int_{1}^{9}[/tex]  [tex]u^{1/2}[/tex] du

Using the power rule of integration, we get,

Total revenue = 4500 × (2/3) [[tex]u^{(3/2)}[/tex]] [tex]|_{1}^{9}[/tex]

⇒Total revenue = 4500 × (2/3) [([tex]9^{(3/2)}[/tex]) - [tex]1^{(3/2)}[/tex]]

⇒Total revenue = 4500 × (2/3) × (26)

⇒ Total revenue = $78,000

Therefore, the total revenue obtained in the first four years is $78,000.

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the mean  decrease and the standard deviation  increase.

To find the new mean and standard deviation, we need to remove the score of 30 from the original set of ten test scores and recalculate the mean and standard deviation based on the remaining nine scores.

First, we can find the sum of the original set of ten test scores:

10 * 50 = 500

Then, we can subtract the score of 30:

500 - 30 = 470

Now we can find the new mean based on the remaining nine scores:

470 / 9 = 52.22

Next, we can find the sum of the squared deviations from the new mean:

(52.22 - 50)^2 + ... + (52.22 - x)^2

where x is the score of the remaining student.

Since we don't know the value of x, we can't calculate the exact value of the standard deviation for the new set of nine scores. However, we do know that the standard deviation is a measure of how spread out the scores are, and removing a score that is below the mean (such as the score of 30) will tend to make the scores less spread out. Therefore, we can conclude that the standard deviation of the new set of nine scores would likely decrease.

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A triangle's circumcenter is where the perpendicular bisectors of its sides meet. The line that cuts through the middle of a side and is perpendicular to it is known as the perpendicular bisector of the side.

The circumcenter, which is sometimes represented by the letter O, is situated at the point where the three perpendicular bisectors intersect. The circumcenter of a triangle is the center of the circle that passes through all three vertices of the triangle. Therefore, the circumcenter is equidistant from the three vertices of the triangle, and its distance from each vertex is equal to the radius of the circumcircle.

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The multinomial model is used to generate documents using a fixed vocabulary of English letter sequences.

In this model, the probability of each letter is represented by a parameter, and the counts of each letter in the document are assumed to follow a multinomial distribution. The minimum number of parameters required in the multinomial model is 26, since there are 26 letters in the English alphabet.

These probabilities can be estimated from a corpus of text data using maximum likelihood estimation, which involves maximizing the likelihood of the observed data with respect to the parameters. The estimated probabilities can then be used to generate new documents using the multinomial model.

Overall, the multinomial model is a useful tool for generating new text data, and its simplicity and flexibility make it well-suited for a variety of natural language processing tasks.

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h = 11.9 cm

cos = adjacent/ hypotenuse

therefore:

cos(24) = h/ 13

rearrange:

h = 13cos(24)

put into calculator:

h = 11.8760...

rounded to one decimal point:

h = 11.9cm

The approximate volume of the sphere with a radius of 3 inches is 113.04 cubic inches.

A sphere is simply a three-dimensional geometric object that is perfectly symmetrical in all directions.

The volume of a sphere is expressed as:

Volume =  (4/3)πr³

Where r is the radius of the sphere and π is the mathematical constant pi (approximately equal to 3.14).

Given that: radius r = 3 in

Substituting r = 3 inches and π = 3.14

Volume =  (4/3)πr³

Volume =  (4/3) × 3.14 × (3 in)³

Volume =  (4/3) × 3.14 × 27 in³

Volume =  113.04 in³

Therefore, the volume is 113.04 cubic inches.

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1.  The opportunity cost of producing 1 ton of grain in Sweden is 0.5 tons of dates.

2. The opportunity cost of producing 1 ton of grain in Libya is 2.5 tons of dates.

3.  Sweden should focus on producing dates, and Libya should focus on producing grain.

4. Both countries can obtain both goods at a lower opportunity cost than if they had tried to produce both goods themselves.

What is algebra?

Algebra is a branch of mathematics that deals with mathematical operations and symbols used to represent numbers and quantities in equations and formulas.

1. What is the opportunity cost of producing 1 ton of grain in Sweden?

To produce 1 ton of grain in Sweden, a farmer would have to give up producing 0.5 tons of dates (since a farmer in Sweden can produce 10 tons of grain or 5 tons of dates in a season). Therefore, the opportunity cost of producing 1 ton of grain in Sweden is 0.5 tons of dates.

2. What is the opportunity cost of producing 1 ton of grain in Libya?

To produce 1 ton of grain in Libya, a farmer would have to give up producing 2.5 tons of dates (since a farmer in Libya can produce 10 tons of grain or 25 tons of dates in a season). Therefore, the opportunity cost of producing 1 ton of grain in Libya is 2.5 tons of dates.

3. In which country should each good be produced?

Sweden has a comparative advantage in producing dates, since its opportunity cost of producing dates is lower than Libya's. Libya has a comparative advantage in producing grain, since its opportunity cost of producing grain is lower than Sweden's. Therefore, Sweden should focus on producing dates, and Libya should focus on producing grain.

4. Can trade benefit both countries? If so, which good should each country specialize in producing?

Yes, trade can benefit both countries. Sweden should specialize in producing dates and trade them for grain with Libya, which should specialize in producing grain. This way, both countries can obtain both goods at a lower opportunity cost than if they had tried to produce both goods themselves.

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The test statistic for this test is -0.213.

To test the hypothesis that two populations have the same mean, we can use a two-sample t-test. The test statistic for this test is calculated by taking the difference between the sample means and dividing it by the standard error of the difference.

In this case, the sample averages are 6 and 7, and the standard deviations for the two samples are 16 and 15, respectively. Both samples have 32 observations.

To calculate the test statistic, we first need to calculate the standard error of the difference. This is given by:

SE = sqrt[(s1^2/n1) + (s2^2/n2)]

where s1 and s2 are the standard deviations for the two samples, and n1 and n2 are the sample sizes. Plugging in the values we have, we get:

SE = sqrt[(16^2/32) + (15^2/32)]
  = 4.698

Next, we calculate the t-statistic:

t = (x1 - x2) / SE

where x1 and x2 are the sample means. Plugging in the values we have, we get:

t = (6 - 7) / 4.698
 = -0.213

The test statistic for this test is -0.213.

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Step-by-step explanation:

If they are SIMILAR triangles :

Area = 1/2 b h         For triangle B   height is then 3.36 in

Triangle a   height will be  3/7 of this = 1.44 in

   then area  of   triangle     a =   1/2 * 3 * 1.44 = 2.16 in^2

To differentiate the expression Y(X) = 2V*-1, we can use the power rule of differentiation. First, we need to consider that V* is a variable and treat it as a constant when differentiating with respect to X.

So, differentiating the expression Y(X) = 2V*-1 with respect to X, we get:

dY/dX = d/dX (2V*-1)
= 2dV*/dX

We can simplify this expression by storing the result in a variable called "firstder":

import sympy as sp
Vstar = sp.Symbol('V*')
X = sp.Symbol('X')

firstder = 2*sp.diff(Vstar,X)

Now, the variable "firstder" contains the symbolic expression for the derivative of Y with respect to X.

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a) The slope of the regression equation: 1.6172

b) The equation of the line of best fit that can be used to predict bean heights is: height = (1.6172 x width) + 2.3349

c) The fraction of the variability in bean heights = 0.7484

d) If the students use the height of the beans to predict the width then the slope =  0.4628

e) The equation of the line of best fit that can be used to predict bean widths is: width = (0.4628 × height) - 16.0299

Here, the summary statistics of a random sample of beans are:

Mean width:  7.586

Stdev width:  0.873

Mean height:  14.603

Stdev height:  1.632

Correlation coefficient:  0.8651

Let us assume that  x represents the width and y represents the height. a) First we find the slope.

slope = r × Sy/Sx

where Sx is the Stdev width and Sy is the Stdev height.

So, slope = (0.8651) × (1.632/0.873)

                =  1.6172

b) First we find the intercept.

intercept = ( [tex]\bar{y}[/tex] - slope × [tex]\bar{x}[/tex])

where [tex]\bar{y}[/tex] = mean height and [tex]\bar{x}[/tex] = mean width

intercept = ( 14.603 - (1.6172)× (7.586))

intercept = 2.3349

So, the equation of the line of best fit that can be used to predict bean heights would be,

y = (1.6172)x + 2.3349

i.e., height = (1.6172 x width) + 2.3349

c) Now we find the fraction of the variability in bean heights can be explained by the linear model of bean height vs. width:

r²

= (0.8651)²

= 0.7484

d) Now let us assume that  x represents the height and y represents the width.

Then the slope would be,

slope = r × Sy/Sx

where Sx is the Stdev height and Sy is the Stdev width.

So, slope = (0.8651) × (0.873/1.632)

                = 0.4628

e) Now we find the intercept.

intercept = ( [tex]\bar{y}[/tex] - slope × [tex]\bar{x}[/tex])

where [tex]\bar{y}[/tex] = mean width and [tex]\bar{x}[/tex] = mean height

intercept = (7.586 - (1.6172)× (14.603))

intercept = -16.0299

Thus the equation of the line of best fit that can be used to predict bean widths.

width = (0.4628 × height) - 16.0299

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Find the complete question below.

Answer:

0

Step-by-step explanation:

have a good day God bless :)

Once you have the required numerical values, plug them into the formula and calculate the minimum sample size needed for Big Corporation to be confident in their estimate of the mean amount of coffee dispensed per cup

We need to determine the minimum sample size required for Big Corporation to estimate the mean amount of coffee dispensed per cup with a certain level of confidence and margin of error.

Unfortunately, some of the numerical values are missing in question.

Step 1: Determine the desired confidence level (e.g., 90%, 95%, 99%).
Step 2: Identify the desired margin of error (e.g., within 0.1 ounces).
Step 3: Given the standard deviation of cup amounts (missing in the question, let's assume it as "σ").

Now, use the formula for determining the minimum sample size needed:

n = (Z² * σ²) / E²

where:
n = minimum sample size
Z = Z-score corresponding to the desired confidence level (e.g., 1.96 for 95% confidence)
σ = standard deviation of cup amounts
E = margin of error

Step 4: Calculate the minimum sample size (n) using the formula and round up to the nearest whole number.

By numerical values, plug them into the formula and calculate the minimum sample size needed for Big Corporation to be confident in their estimate of the mean amount of coffee dispensed per cup.

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For a large sample of blood pressure values with a mean of 120 and a standard deviation of 10, the interval that is likely to cover about 95% of the blood pressures in the sample is between 100 and 140.

Based on the given information, we can use the empirical rule to estimate the interval that is likely to cover about 95% of the blood pressures in the sample. The empirical rule states that for a bell-shaped curve, approximately 68% of the data falls within one standard deviation of the mean, about 95% falls within two standard deviations of the mean, and nearly all (99.7%) falls within three standard deviations of the mean.

Therefore, for a large sample of blood pressure values with a mean of 120 and a standard deviation of 10, the interval that is likely to cover about 95% of the blood pressures in the sample is between 100 and 140. This is because two standard deviations above and below the mean (2 x 10 = 20) added to and subtracted from the mean (120) gives us a range of 100 to 140.

Based on the given information, for a large sample of blood pressure values with a mean of 120 and a standard deviation of 10, and assuming a bell-shaped curve, the interval likely to cover about 95% of blood pressures in the sample would be within two standard deviations from the mean. This interval can be calculated as follows:

Lower limit: Mean - (2 × Standard Deviation) = 120 - (2 × 10) = 100
Upper limit: Mean + (2 × Standard Deviation) = 120 + (2 × 10) = 140

So, the interval that covers approximately 95% of blood pressures in the sample is 100 to 140.

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The amount in the savings account after each number of years are as follows

2 years = $3413.6

5 years = $3434

8 years = $3454.4

In Mathematics, simple interest can be calculated by using this formula:

S.I = PRT or S.I = A - P

Where:

By substituting the given parameters into the simple interest formula, we have;

SI = 3400 × 0.2/100 × 2

SI = $13.6

A = SI + P = 13.6 + 3400 = $3413.6

After 5 years, we have:

SI = 3400 × 0.2/100 × 5

SI = $34

A = SI + P = 34 + 3400 = $3434

After 8 years, we have:

SI = 3400 × 0.2/100 × 8

SI = $54.4

A = SI + P = 54.4 + 3400 = $3454.4

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Complete Question:

Charlyne deposited $3400 into a savings account that has an annual simple interest rate of 0.2%. Find the amount in the savings account after each number of years.

2 years $

5 years $

8 years $