which cube is a unit cube? responses a cube that is 7 feet long, 7 feet tall, and 7 feet high a cube that is 7 feet long, 7 feet tall, and 7 feet high a cube that is 15 centimeters long, 15 centimeters wide, and 15 centimeters high a cube that is 15 centimeters long, 15 centimeters wide, and 15 centimeters high a cube that is 1 meter long, 1 meter wide, and 1 meter high a cube that is 1 meter long, 1 meter wide, and 1 meter high a cube that is 5 inches long, 5 inches wide, and 5 inches high

The domain of the curve is simply the set of all real numbers.So the domain of the function is all x values less than 1, which can be written as (-∞, 1).

To eliminate the parameter, we need to solve for t in terms of r or y.

From r(t) = 1 - et, we can rearrange to get et = 1 - r(t), and then take the natural logarithm of both sides to get:

t = ln(1 - r(t))

Similarly, from y(t) = 24, we can see that y(t) is a constant value that doesn't depend on t. Therefore, we don't need to eliminate the parameter in this case.

The domain of the curve is all values of t for which r(t) and y(t) are defined. From r(t) = 1 - et, we see that r(t) is defined for all values of t, since the exponential function is defined for all real numbers. Therefore, the domain of the curve is simply the set of all real numbers.

To eliminate the parameter t, we'll express t in terms of x and then substitute it into the y(t) equation. Given r(t) = 1 - e^t, we can solve for t:

1 - e^t = x
e^t = 1 - x
t = ln(1 - x)

Now, we can substitute t into the y(t) equation:

y(t) = y(ln(1 - x)) = 24

Therefore, the Cartesian equation is y = 24. The domain is all values of x for which t is defined. Since t = ln(1 - x), the argument of the natural logarithm (1 - x) must be greater than 0:

1 - x > 0
x < 1

So the domain of the function is all x values less than 1, which can be written as (-∞, 1).

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Answer:

Like a bunch

Step-by-step explanation:

i'm sorry that's just an estimate guess :((((((((((((((((((((((((((((((((((((((

Real number [tex]$x^2+y^2= \boxed{158}$[/tex]

Let's start by using the formulas for arithmetic mean and geometric mean:

Arithmetic mean:

[tex]$\frac{x+y}{2}=7 \Rightarrow x+y=14$[/tex]

Geometric mean:

[tex]$\sqrt{xy}=\sqrt{19} \Rightarrow xy=19$[/tex]

Now, we can square the equation for the arithmetic mean:

[tex]$(x+y)^2=14^2 \Rightarrow x^2+2xy+y^2=196$[/tex]

Substituting[tex]$xy=19$[/tex], we get:

[tex]$x^2+y^2+2(19)=196$[/tex]

Simplifying:

[tex]$x^2+y^2= \boxed{158}$[/tex]

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If the birth rate were to decline in a population, the growth curve would be affected as well. A decrease in the birth rate would cause the population growth to slow down, resulting in a change in the shape of the curve.

Initially, the exponential curve illustrates slow population growth, followed by a rapid increase over time. However, with a declining birth rate, the curve would likely transition into a logistic growth curve. This type of curve is characterized by an initial period of slow growth, followed by a phase of rapid growth, and eventually leveling off when the population reaches its carrying capacity or other limiting factors come into play.

The projections for the population growth would also be impacted by the decrease in the birth rate. Lower birth rates typically lead to slower growth rates, and in some cases, may even result in a population decline if the birth rate falls below the death rate. This change would be reflected in the updated projections for population growth over time.

In summary, if the birth rate were to decline in a population with an exponential growth curve, the curve would likely shift towards a logistic growth pattern, with slower overall growth and eventual leveling off. The projections for population growth would need to be adjusted to account for the changes caused by the reduced birth rate.

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Answer:

x=60 degrees

Step-by-step explanation:

Since they gave you the arc lengths, you have to add them all up and make it equal to 360, or write an equation:

(x+83)+(x+14)+(x+83)=360

then, first simplify the left side of the equation:

3x+180=360

then, subtract 180 from both sides:

3x=180

finally, divide both sides by 3:

x=60

So, x=60 degrees

Hope this helps! :)

The correct option is A: 0.0335. The probability that the professor will have no messages on a randomly selected day ,

can be calculated using the Poisson distribution formula, where the mean is given as 5. The formula is P(X=0) = e^(-λ) * λ^0 / 0!, where λ is the mean. Substituting the values, we get P(X=0) = e^(-5) * 5^0 / 0! = e^(-5) ≈ 0.0067 or 0.67%. Therefore, the answer is option A: 0.0335.

This means that on average, the professor is expected to receive 5 emails per day, but there is a small chance that she will receive no emails on any given day.

In this case, the probability is quite low, only 0.67%. However, it is not impossible to have no messages, even though it is unlikely.

It is important to note that the Poisson distribution is a probability model used to describe the occurrence of rare events over time or space, and it assumes that the events are independent of each other and occur randomly.

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The area of the tile shown is C) 42.5 cm².

To calculate the area of the tile shown, we need to divide it into two triangles and a rectangle. The rectangle's area is the product of the length and width, which is 3 cm x 6 cm = 18 cm².

To find the area of the triangles, we need to use the formula for the area of a triangle, which is 1/2(base x height). The base and height of the left triangle are 5 cm and 6 cm, respectively. So, the area of the left triangle is 1/2(5 cm x 6 cm) = 15 cm².

The base and height of the right triangle are 3 cm and 5 cm, respectively. So, the area of the right triangle is 1/2(3 cm x 5 cm) = 7.5 cm².

Adding the areas of the rectangle and the two triangles, we get 18 cm² + 15 cm² + 7.5 cm² = 40.5 cm². Therefore, the area of the tile shown is 40.5 cm², which is closest to the option C, 42.5 cm².

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The probability that a randomly selected household in the United States owns a dog or a cat is approximately 0.558 or 55.8%.

The probability that a randomly selected household in the United States owns a dog or a cat, we need to calculate the union of the two events, which is the probability that a household owns a dog or a cat or both.

We can use the formula for the union of two events:

P(Dog or Cat) = P(Dog) + P(Cat) - P(Dog and Cat)

Where,

P(Dog) is the probability that a household owns a dog,

P(Cat) is the probability that a household owns a cat and

P(Dog and Cat) is the probability that a household owns both a dog and a cat.

Since the events "owning a dog" and "owning a cat" are not mutually exclusive (a household can own both), we need to subtract the probability of owning both to avoid double counting.

From the report,

We know that P(Dog) = 36.5% = 0.365 and P(Cat) = 30.4% = 0.304. However,

We do not have information on the probability of owning both a dog and a cat.

Assuming that owning a dog and owning a cat are independent events (which may not be a valid assumption in reality), we can estimate P(Dog and Cat) as the product of the individual probabilities:

P(Dog and Cat) ≈ P(Dog) × P(Cat) = 0.365 × 0.304 = 0.11116 (rounded to five decimal places)

Substituting the values in the formula, we get:

P(Dog or Cat) = P(Dog) + P(Cat) - P(Dog and Cat)

= 0.365 + 0.304 - 0.11116 ≈ 0.558

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Rounded to three decimal places, the standardized test statistic t is 1.573. To find the standardized test statistic t, we can use the formula:

t = (x - μ) / (s / √n)

Plugging in the values given in the question, we get:

t = (30.2 - 29) / (2.2 / √12)
t = 4.268

To round to three decimal places, we look at the fourth digit after the decimal point. Since it's 8 and greater than or equal to 5, we round up the third digit to get:

t ≈ 4.268

Therefore, the standardized test statistic t is approximately 4.268.
To find the standardized test statistic t for the given sample, we will use the t-score formula:

t = (x - μ) / (s / √n)

Where:
- x is the sample mean (30.2)
- μ is the population mean under the null hypothesis (29)
- s is the sample standard deviation (2.2)
- n is the sample size (12)

Plugging in the values, we get:

t = (30.2 - 29) / (2.2 / √12) ≈ 1.573

Rounded to three decimal places, the standardized test statistic t is 1.573.

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The volume of the solid obtained by rotating the region R about the z-axis is 64π/3.

The volume of the solid is -100/9 cubic units.

We have,

(a)

We need to compute the volume of the solid obtained by rotating the region R about the z-axis.

This solid is the union of a hemisphere of radius 2 and a pyramid of base area A = πr^2 = 16π and height h = 2.

The volume is given by:

V = Vsphere + Vpyramid

= (4π/3)(2³) + (1/3)(16π)(2)

= (32π/3) + (32π/3)

= (64π/3)

(b)

We need to compute the volume of the solid that lies above the triangle R in the xy - plane and below the plane z = 20 - 4x - 5y.

Since the solid is bounded by a plane and a surface, we can use the formula:

V = ∬R [20 - 4x - 5y] dA

where R is the triangle bounded by the lines 5y + 4x = 20, x = 0, and y = 0 in the xy-plane.

To evaluate this integral, we need to express dA in terms of x and y.

Since the triangle is in the positive octant, we have:

dA = dxdy

Therefore, the integral becomes:

V = ∫0^4 ∫0^(5/4)(20 - 4x - 5y) dy dx

= ∫0^4 [(20/5)x - (2/5)x² - (25/24)x²] dx

= ∫0^4 [(20/5) - (2/5)x - (25/24)x²] dx

= [20x/5 - (1/5)x² - (25/72)x³]_0^4

= (16/5) - (16/5) - (500/72)

= -100/9

The volume of the solid is -100/9 cubic units.

Note that the negative sign indicates that the solid lies below the

xy - plane.

Thus,

The volume of the solid obtained by rotating the region R about the z-axis is 64π/3.

The volume of the solid is -100/9 cubic units.

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Quadrilaterals that can be decomposed into same triangles the use of only one line are called trapezoids.

The line that is used to decompose the trapezoid is called the diagonal. The diagonal of a trapezoid is a line section that connects non-parallel sides of the trapezoid. whilst the diagonal is drawn in a trapezoid, it divides the trapezoid into two triangles.

These triangles are equal due to the fact they proportion a not unusual side, which is the diagonal, and they have the identical peak, which is the distance between the parallel facets of the trapezoid. consequently, any trapezoid can be decomposed into identical triangles the use of handiest one line, that is the diagonal.

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Enter an expression that gives the exact value,  A   Sum = 5 * (1 - (0.2)^16) / (1 - 0.2), B Sum = 5(0.2)^3 * (1 - (0.2)^7) / (1 - 0.2)

A. The finite geometric series is given as: 5 + 5(0.2) + 5(0.2)^2 + ... + 5(0.2)^15. The number of terms is 16, as indicated.

To find the sum, we can use the formula for the sum of a finite geometric series:

Sum = a * (1 - r^n) / (1 - r)

where a is the first term, r is the common ratio, and n is the number of terms.

In this case, a = 5, r = 0.2, and n = 16. Plugging these values into the formula, we get:

Sum = 5 * (1 - (0.2)^16) / (1 - 0.2)

B. The finite geometric series is given as: 5(0.2)^3 + 5(0.2)^4 + 5(0.2)^5 + ... + 5(0.2)^9. The number of terms is 7.

Again, using the formula for the sum of a finite geometric series:

Sum = a * (1 - r^n) / (1 - r)

In this case, a = 5(0.2)^3, r = 0.2, and n = 7. Plugging these values into the formula, we get:

Sum = 5(0.2)^3 * (1 - (0.2)^7) / (1 - 0.2)

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The value of x by the given data is 4/3.

We are given that;

The lines RK and LM which are parallel and SRQ= (6x-40) and PSR=(12x-32).

Now,

Since SRQ and PSR are alternate interior angles, they must be equal.

6x - 40 = 12x - 32

Solving for x gives:

6x = 8

x = 4/3

Therefore, by the angles the answer will be 4/3.

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Suppose you need to find the value of dx/dt when x = 2 and xy = -3, and dy/dt = -4. We can use implicit differentiation to solve this problem.The solution will be: dx/dt = 8/3 and dy/dt = -16/9 when x = 2 and y = 3.

Differentiating both sides of xy = -3 with respect to time, we get: x(dy/dt) + y(dx/dt) = 0
Substituting the given values, we get:
2(-4) + y(dx/dt) = 0
Solving for dx/dt, we get:
dx/dt = 8/y
Now we need to find the value of y when x = 2. We can use the given equation x^2 + y^2 = 13 to solve for y:
y^2 = 13 - x^2
y^2 = 13 - 2^2
y^2 = 9
y = 3 or y = -3
Since y cannot be negative in this context, we take y = 3. Substituting this value in the expression for dx/dt, we get:
dx/dt = 8/3
Therefore, when x = 2 and xy = -3, and dy/dt = -4, we have dx/dt = 8/3.
Now, let's consider the second problem. We are given x^2 + y^2 = 13, and dt/dy = 4 when x = 2 and y = 3. We need to find dy/dt when x = 2 and y = 3.
Again, we can use implicit differentiation to solve this problem. Differentiating both sides of x^2 + y^2 = 13 with respect to time, we get:
2x(dx/dt) + 2y(dy/dt) = 0
Substituting the given values, we get:
2(2)(dx/dt) + 2(3)(dy/dt) = 0
Simplifying, we get:
4(dx/dt) + 6(dy/dt) = 0
Solving for dy/dt, we get:
dy/dt = -4/3(dx/dt)
Substituting the given value of dx/dt when x = 2, we get:
dy/dt = -4/3(8/3)
Simplifying, we get:
dy/dt = -32/9
Therefore, when x = 2 and y = 3, we have dy/dt = -32/9.

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For a circle with a radius of 611m and a sector area of 611 m², the arc length is approximately 2.006 m, and the central angle is approximately 1222/373321 radians.

To find the arc length, area of sector A, and central angle of a circle with radius r=611m and given value A=611m, we can use the following formulas:

1. Arc Length (s) = r * θ
2. Area of Sector A (A) = (1/2) * r² * θ
3. Central Angle (θ) in radians

Given that the area of the sector (A) is 611 m², we can use the second formula to find the central angle (θ):

611 = (1/2) * 611² * θ

To solve for θ, we can first simplify the equation:

611 = (1/2) * 373321 * θ
θ = 1222 / 373321

Now that we have the central angle (θ), we can find the arc length (s) using the first formula:

s = 611 * (1222 / 373321)

s ≈ 2.006 m (rounded to three decimal places)

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The formula to calculate the number of bit strings of length six or less, not counting the empty string, is (Σ6i=0 2i) - 1.

To explain this formula, let's break it down. The Σ6i=0 represents a summation from i=0 to i=6. The 2i represents the number of possibilities for each bit (either 0 or 1) and the summation allows us to count all possible combinations of bit strings of length 6 or less.

However, we need to subtract 1 from the total because we are not counting the empty string. This formula ensures that we are only counting bit strings with at least one bit set to either 0 or 1.

In simpler terms, the formula tells us to take 2 to the power of each possible bit position (from 0 to 6), add up all those possibilities, and then subtract 1 to account for the empty string. This gives us the total number of possible bit strings of length six or less.

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Dr. Anderson is using a sampling procedure known as systematic sampling. This type of sampling involves selecting every nth participant from a list or population after randomly selecting the first participant.

In this case, the first participant is selected randomly, and then every fourth student listed in the program roster is selected. This sampling technique can be useful in situations where the population is too large to sample in its entirety, but a representative sample is needed. Systematic sampling ensures that the sample is evenly distributed across the population, reducing the likelihood of bias in the sample.

Dr. Anderson is using a systematic sampling procedure. This method involves selecting the first participant randomly, and then choosing every fourth student from the program roster. Systematic sampling ensures that the sample is evenly spread across the population and reduces the risk of bias. It's efficient and easy to implement, but there's a chance of periodicity if the population has a repeating pattern. Overall, this sampling technique is useful when dealing with large populations where simple random sampling might be impractical or time-consuming.

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To determine whether a relation is asymmetric, we can use the matrix representation of the relation on a set. Specifically, if a relation is asymmetric, then every entry above the main diagonal (i.e., where the row index is greater than the column index) must be 0.

This is because if (a,b) is in the relation, then (b,a) cannot be in the relation if it is asymmetric. Therefore, if the matrix representation of a relation has any non-zero entries above the main diagonal, then the relation is not asymmetric. If all entries above the main diagonal are 0, then the relation is asymmetric.
To determine whether a relation R on a set A is asymmetric using its matrix representation, follow these steps:

1. Create the matrix M representing the relation R, where M[i][j] = 1 if (a_i, a_j) is in R and M[i][j] = 0 otherwise.
2. Check the main diagonal of matrix M. If any element M[i][i] is equal to 1, the relation is not asymmetric.
3. For all other pairs (i, j), if M[i][j] = 1, ensure M[j][i] = 0. If you find any pair (i, j) where M[i][j] = M[j][i] = 1, the relation is not asymmetric.

If all these conditions hold, the relation R is asymmetric.

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Answer:

y = x + 1

Step-by-step explanation:

This is because the +1 makes every value of y one higher than the x value inputted.

The cost of one chocolate doughnut treat is K8, and the cost of one Raspberry rose doughnut treat is K12.

We have,

Let's assume that the cost of a chocolate doughnut treat is "C" and the cost of a Raspberry rose doughnut treat is "R".

We can set up two equations:

Jasmine's purchase:

7C + 11R = 188

Peter's purchase:

13C + 11R = 236

We can use the above two equations to solve for the values of C and R.

7C + 11R - (13C + 11R) = 188 - 236

-6C = -48

C = 8

Now that we have the value of C,

We can substitute it into one of the original equations to solve for R:

7(8) + 11R = 188

56 + 11R = 188

11R = 132

R = 12

Therefore,

The cost of one chocolate doughnut treat is K8, and the cost of one Raspberry rose doughnut treat is K12.

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TRUE. An independent premise is a premise that can stand alone and support the conclusion of an argument without relying on other premises.

It provides separate evidence for the conclusion, distinguishing it from dependent premises, which require other premises to support the conclusion effectively.

On the other hand, a dependent premise is a premise that cannot support the conclusion on its own and requires other premises to be persuasive. Dependent premises often serve as links between independent premises, helping to establish a chain of reasoning that leads to the conclusion.

It's essential to distinguish between independent and dependent premises because they play different roles in constructing a persuasive argument.

Independent premises provide stronger support for the conclusion because they offer separate evidence. Dependent premises, while still valuable, are weaker because they rely on other premises to be persuasive.

Therefore, constructing a sound argument requires a mix of independent and dependent premises. Independent premises provide the foundation for the argument, while dependent premises help to strengthen the connections between the independent premises and the conclusion.

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The equation that best represents the graph is given as follows:

A. y = 200x.

A proportional relationship is a type of relationship between two quantities in which they maintain a constant ratio to each other.

The equation that defines the proportional relationship is given as follows:

y = kx.

In which k is the constant of proportionality, representing the increase in the output variable y when the constant variable x is increased by one.

For the graph in this problem, when x increases by 1, y increases by 200, hence the constant is given as follows:

k = 200.

Then the equation is:

y = 200x.

The graph is given by the image presented at the end of the answer.

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The ratio, 71 : 53 of the form n:1 is 1.34 : 1.

How to find ratios?

The ratio of black cars to green cars in a car park is 71 : 53.

Therefore, let's represent the ratio of the form n : 1.

Ratio, is a term that is used to compare two or more numbers. In simper term, ratios compare two or more values.

Hence, let's divide the ratio by 53.

Therefore,

71 : 53

71 / 53 : 53 / 53

1.33962264151 : 1

1.34 : 1

where

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The number 95 is composite number.

Given that, 95 is a multiple of 5.

A multiple in math are the numbers you get when you multiply a certain number by an integer.

Here, 95/5

= 19

95 is a multiple of 5, which means it is divisible by 5. Since it is divisible by a number other than 1 and itself, 95 is a composite number and not a prime number. This means that 95 has factors other than 1 and itself, which are 5 and 19.

Therefore, the number 95 is composite number.

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The probability of drawing a blue card on the first draw is 5/15. After drawing the first blue card, there are only 4 blue cards left out of 14 cards. Therefore, the probability of drawing a second blue card is 4/14. To find the probability of both events happening (drawing two blue cards in a row), we multiply the probabilities together:

(5/15) x (4/14) = 20/210 = 2/21

So the probability of Annika winning by drawing two blue cards in a row is 2/21.


1. There are 15 cards left in the deck, and 5 of them are blue cards.

2. For the first card to be blue, the probability is the number of blue cards divided by the total number of cards left in the deck. So the probability is 5/15, which simplifies to 1/3.

3. If the first card is blue, there will be 14 cards left in the deck and 4 of them will be blue cards.

4. For the second card to be blue, given that the first card is blue, the probability is the number of remaining blue cards divided by the total number of cards left. So the probability is 4/14, which simplifies to 2/7.

5. To find the probability of both events happening together (first card is blue and second card is blue), multiply the probabilities from step 2 and step 4: (1/3) * (2/7) = 2/21.

So, the probability that the two cards dealt to Annika will both be blue is 2/21.

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By using previous years' population data and calculating the annual growth rate, we can estimate the population of the United States in 2010, assuming the population trend continued in the same manner.

To estimate the population of the United States in 2010, we can use the population growth trend from previous years. Here's a step-by-step explanation:

1. Collect population data: Find the population of the United States in previous years, preferably as close to 2010 as possible. For example, we can use the population data from 2000 and 2005.

2. Calculate the annual growth rate: Subtract the population in 2000 from the population in 2005, and divide the result by the population in 2000. Then, divide the result by the number of years between the two data points (5 years in this case) to get the average annual growth rate.

3. Apply the growth rate to the 2005 population: Multiply the population in 2005 by the annual growth rate, and then add the result to the 2005 population to get an estimate of the population in 2006. Repeat this process for each subsequent year until you reach 2010.

4. The estimated population in 2010: The result of step 3 for the year 2010 will be the reasonable estimation of the population in 2010, assuming the population trend continued in the same manner.

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The value of expression is,

⇒ (- 3√6 + 9 - √12 + 3√2) / 3

We have to given that;

The expression is,

⇒ (3 + √2) / (√6 + 3)

Now, We can simplify by rationalizing the denominator as;

⇒ (3 + √2) / (√6 + 3)

Multiply and divide by (√6 - 3) as;

⇒ (3 + √2) (√6 - 3) / (√6 + 3) (√6 - 3)

⇒ (3√6 - 9 + √12 - 3√2) / (6 - 9)

⇒ (3√6 - 9 + √12 - 3√2) / (-3)

⇒ - (3√6 - 9 + √12 - 3√2) / 3

⇒ (- 3√6 + 9 - √12 + 3√2) / 3

Thus, The value of expression is,

⇒ (- 3√6 + 9 - √12 + 3√2) / 3

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In the inpatient setting, a CPT code (Current Procedural Terminology) would typically be assigned by the hospital for a procedure code to accurately bill for the services provided during the patient's stay.

This code is used to describe the specific medical service or procedure performed, such as a surgery or diagnostic test. It is important for hospitals to accurately assign CPT codes to ensure proper billing and reimbursement for the services provided. Additionally, the use of standardized CPT codes helps to facilitate communication and record-keeping across different healthcare providers and facilities.

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The limit of the function as x goes to negative infinity is given as follows:

lim x -> -∞ f(x) = -1.

The limit for the function in this problem is defined as follows:

[tex]\lim_{x \rightarrow -\infty} (x + \sqrt{x^2 + 2x})[/tex]

The limit of the sum is given by the sum of the limits, hence:

[tex]\lim_{x \rightarrow -\infty} x + \lim_{x \rightarrow -\infty} \sqrt{x^2 + 2x}[/tex]

For the first limit, we just replace, hence it is of negative infinity.

For the second limit, we have that sqrt(x²) = |x|, hence we can divide by x^2 inside the square root, hence:

sqrt(1) = 1.

Then the limit is given as follows:

-∞ - 1 = -1.

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Ans .: Interval of one standard deviation from the mean = 63.5 to 90.5.

To find the interval of one standard deviation from the mean for this sample, we need to first calculate the mean and standard deviation.

The mean is found by adding up all the numbers in the sample and dividing by the total number of numbers:

(61 + 69 + 69 + 74 + 85 + 87 + 97) / 7 = 77

So the mean is 77.

To find the standard deviation, we need to calculate the variance first. The variance is found by subtracting each number in the sample from the mean, squaring the result, adding up all the squared results, and dividing by the total number of numbers:

((61-77)^2 + (69-77)^2 + (69-77)^2 + (74-77)^2 + (85-77)^2 + (87-77)^2 + (97-77)^2) / 7 = 183.43

So the variance is 183.43.

The standard deviation is the square root of the variance:

√183.43 ≈ 13.5

So the standard deviation is approximately 13.5.

To find the interval of one standard deviation from the mean, we need to subtract and add the standard deviation to the mean:

77 - 13.5 = 63.5

77 + 13.5 = 90.5

So the interval of one standard deviation from the mean for this sample is approximately 63.5 to 90.5.

We round the non-integer results to the nearest tenth, so the final answer is:

Interval of one standard deviation from the mean = 63.5 to 90.5.

Learn more about :

standard deviation : brainly.com/question/29808998

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