Suppose you roll a special 37-sided die. What is the probability that one of the following numbers is rolled? 35 | 25 | 33 | 9 | 19 Probability = (Round to 4 decimal places) License Points possible: 1 This is attempt 1 of 2.

The B) constant variance assumption requires that all variation around the regression line should be equal at all possible values (levels) of the independent variable.

The constant variance assumption, also known as homoscedasticity, requires that the variance of the residuals (i.e., the differences between observed and predicted values) should be approximately the same across all levels of the independent variable.

This assumption is necessary for valid statistical inference in linear regression analysis because violations of constant variance can result in biased estimates of the regression coefficients and incorrect hypothesis tests.

The independent variable is the variable that is used to predict the dependent variable. The constant variance assumption applies to the residuals at all possible values of the independent variable. Therefore, the correct answer is B. constant variance, independent.

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The answer to this question is 150 adults. This is calculated by subtracting the number of boys and girls from the total number of people in the museum, 250.

Subtracting is a mathematical operation that involves the removal of one number or quantity from another. Subtracting can be done by either counting down from the larger number or counting up from the smaller number until the two numbers meet.

2/5 of 250 people is equal to 100 girls. 3/10 of 250 people is equal to 75 boys. When these two numbers are subtracted from the total number of people in the museum, 250, the answer is 150 adults.

To work out the number of adults in the museum, it is important to first identify the fractions and convert them into decimals. For example, to convert 2/5 into a decimal, 2 is divided by 5, which gives an answer of 0.4. This process should be repeated for the other fractions given in this problem.

Once the fractions are converted into decimals, the next step is to multiply the decimals by the total number of people in the museum, 250. For example, 0.4 multiplied by 250 is equal to 100 girls.

Finally, the numbers of boys and girls should be subtracted from the total number of people in the museum, 250. This gives an answer of 150 adults.

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By subtracting the number of boys and girls from the total number of people in the museum, we get the number of adults that is 75.

What is subtracting?

Subtracting is a mathematical operation that involves the removal of one number or quantity from another. Subtracting can be done by either counting down from the larger number or counting up from the smaller number until the two numbers meet.

2/5 of 250 people = 100 girls.

3/10 of 250 people =75 boys.

When these two numbers are subtracted from the total number of people in the museum, that is

250-(100+75)= 75 adults

Thus, the number of adults among the 250 people in a museum are 75.

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The order from narrowest to widest is: C) z-interval. A) t-interval with 6 degrees of freedom. B) t-interval with 2 degrees of freedom.

In statistics, the likelihood that a population parameter will fall between a set of values for a certain percentage of the time is referred to as a confidence interval. Analysts frequently employ confidence ranges that include 95% or 99% of anticipated observations. So, it may be concluded that there is a 95% likelihood that the real value falls within that range if a point estimate of 10.00 with a 95% confidence interval of 9.50 - 10.50 is derived using a statistical model.

A confidence interval's breadth is influenced by the sample size and degree of confidence. Higher confidence levels often result in broader intervals, whereas bigger sample numbers typically result in narrower intervals.

In this instance, the three intervals have different degrees of freedom but the same 88% confidence level.

Hence, The order from narrowest to widest is: C) z-interval. A) t-interval with 6 degrees of freedom. B) t-interval with 2 degrees of freedom.

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Answer: The cost of painting is Rs.254.4

Step-by-step explanation:

let  l and b be the sides

        b=3m 20 cm=3.20m    

                                          = 5.30×3.20

                                           =16.96m²

We are given that, the measures of sides of blackboard are 5 m 30 cm and 3m 20 cm.

__________________________________________

[tex] \bf \implies5 m + 30 cm \\ [/tex]

[tex] \sf \implies 5 m + \dfrac{30}{100}m \\ [/tex]

[tex] \sf \implies 5 m + \dfrac{3\cancel{0}}{10\cancel{0}}m \\ [/tex]

[tex] \sf \implies 5 m + 0.3 m \\ [/tex]

[tex]\purple{ \bf \implies 5.3~ m } \\ [/tex]

[tex] \bf \implies3 m + 20 cm \\ [/tex]

[tex] \sf \implies 3 m + \dfrac{20}{100}m \\ [/tex]

[tex] \sf \implies 3 m + \dfrac{2\cancel{0}}{10\cancel{0}}m \\ [/tex]

[tex] \sf \implies 3 m + 0.2 m \\ [/tex]

[tex] \purple{\bf \implies 3. 2 ~m} \\ [/tex]

_______________________________________________

[tex] \pink{\frak{\implies Area _{(Blackboard) }= Length \times Breadth ~m^2}} \\ [/tex]

[tex] \sf \implies Area _{(Blackboard) } = 5.3 \times 3.2 ~m^2 \\ [/tex]

[tex] \sf \implies Area _{(Blackboard) } = 16.96 m^2 \\ [/tex]

[tex] \sf \implies 15 \times 16.96 \\ [/tex]

[tex] \pink{\sf \implies Rs ~254.4 } \\ [/tex]

The circumference of the circle with a radius of 16 is 32π using formula for the circumference of a circle is C = 2πr.

The circumference of a circle is the distance around the perimeter of the circle. The formula for the circumference of a circle is C = 2πr, where C is the circumference, π is the constant pi, and r is the radius of the circle.

In this case, the radius of the circle is 16, so we can substitute this value into the formula and simplify:

C = 2πr

C = 2π(16)

C = 32π

This means that if we were to measure the distance around the perimeter of the circle, we would get a value of 32π units, where π is the irrational number approximately equal to 3.14159.

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The coordinate matrix LFE of L relative to the ordered bases E and F is

[tex]\left(\begin{array}{ccc}3&1&10\\3&3&2\\0&3&3\\0&0&3\end{array}\right)[/tex].

Since here L is a linear transformation from a vector space of dimension 3 to a vector space of dimension 4, the coordinate matrix of L relative to the given ordered bases must be a (4×3) matrix,

Linear transformation is given by,

L(P(t)) = 5p"(t) + 1p' (t) + 3p(t) + 3tp(t)

The given basis is IP² is E = (C1, C2, C3) where, e1(t) = 1, e2(t) = t, e3(t) = t².

Also the given basis of IP³ is (f1, f2, f3, f4) where, f1(t) = 1, f2(t) = t, f3(t) = t², f4(t) = t³.

Now to find the coordinate matrix,

Now,

L(e1(t)) = 5.0 + 1.0 + 3.1 + 3t.1

= 3 + 3t

= 3f1(t) + 3f2(t) + 0.f3(t) + 0.f4(t)

L(e2(t)) = 5.0 + 1.1 + 3.t + 3t.t

= 1 + 3t + 3t²

L(e3(t)) = 5.2 + 1.2t + 3.t² + 3t.t²

= 10 + 2t + 3t² + 3t³

Now writing the coefficients as a column vector we get,

[tex]\left(\begin{array}{ccc}3&1&10\\3&3&2\\0&3&3\\0&0&3\end{array}\right)[/tex]

The coordinate matrix LFE of L relative to the ordered bases E and F is

[tex]\left(\begin{array}{ccc}3&1&10\\3&3&2\\0&3&3\\0&0&3\end{array}\right)[/tex].

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Answer:  Vertical asymptote = 2

                Horizontal asymptote = 1

                y intercept = ( 0, 5/2 )

                x intercept = ( 5,0 )

Other points of graph = ( 3,-2 )

                                      = ( 4,-1/2 )

                                      = ( -1, 2 )

                                      = (-2,7/4 )

                                      = ( -3 , 8/5 )

Step-by-step explanation:  

Answer: 729×64 is: (3^3 × 2^3)^2

Step-by-step explanation:

(a) To express 432 as the product of prime factors in exponential form, we can follow these steps:

Divide by 2 as many times as possible until the result is odd: 432 ÷ 2 = 216 ÷ 2 = 108 ÷ 2 = 54 ÷ 2 = 27 (5 times)

Divide by 3 as many times as possible until the result is not divisible by 3: 27 ÷ 3 = 9 ÷ 3 = 3 (2 times)

Since 3 is a prime number, we cannot divide by any other prime number to obtain a smaller result. Therefore, the prime factorization of 432 is: 2^4 × 3^3.

(b) To express 729×64 as the product of prime factors in exponential form, we can follow these steps:

Rewrite each factor as a power of a prime: 729 = 3^6 and 64 = 2^6.

Multiply the powers of each prime together: (3^6) × (2^6) = 3^6 × 2^6.

Simplify the result by factoring out the highest possible power of each prime: 3^6 × 2^6 = (3^3 × 2^3)^2.

Therefore, the prime factorization of 729×64 is: (3^3 × 2^3)^2.

Answer:

Below in bold.

Step-by-step explanation:

2) 432

2) 216

2) 108

2)  54

3) 27

3) 9

   3

So 432 = 2^4 * 3^3.

3)729

3)243

3)81

3)27

3)9

3

64 = 2^6

So the answer is 2^6 * 3^6

Answer:

Answer: $80,000(1+0.004)^60 + $519.17 [1-(+0.004)^60/0.004]

Step-by-step explanation:

Daniel's pay for the week was $504.00, which includes his hourly pay and his commission on direct phone sales.

To calculate Daniel's pay for the week, we need to find his total earnings, which include his hourly wage and his commission on direct phone sales.

First, let's calculate his commission on direct phone sales. We know that he received $72.00 in commissions, and we also know that his commission is six percent of his sales. So, we can use the formula:

Commission = Sales x Commission Rate

To find his sales, we can rearrange the formula to:

Sales = Commission / Commission Rate

Plugging in the given values, we get:

Sales = $72.00 / 0.06 = $1200.00

So, Daniel's direct phone sales for the week were $1200.00.

Now, let's calculate his hourly pay. He worked for 48 hours at a rate of $9.00 per hour, so his hourly earnings were:

Hourly Pay = Hours Worked x Hourly Rate

Hourly Pay = 48 x $9.00 = $432.00

Finally, we can add his commission and his hourly pay to find his total earnings for the week:

Total Pay = Hourly Pay + Commission

Total Pay = $432.00 + $72.00

Total Pay = $504.00

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The correct answer is p=62

[tex]8700[/tex] cubic feet of airflow are required for the entire home. Jackson may utilize this information to determine the best furnace size for the customer's requirements.

Volume is the quantity of space an object occupies, whereas capacity is a measurement of the substance—such as a solid, liquid, or gas—that an object can hold. While capacity may be measured in virtually any other unit, such as liters, gallons, pounds, etc., volume was determined in cubic units.

Volume, which is measured in cubic units, is the three dimensional space inhabited by material or surrounded by a surface. The cubic centimeter (m3), a derived unit, is the SI unit for volume.

Volume of the first section with height [tex]H1=10[/tex] ft:

[tex]V1 = WLH1 = (20 ft)(30 ft)(10 ft) = 6000[/tex] cubic feet

Volume of the second section with height [tex]H2=9[/tex] ft:

[tex]V2 = (1/2)WLH2 = (1/2)(20 ft)(30 ft)(9 ft) = 2700[/tex]cubic feet

Total volume of house,

[tex]V total = V1 + V2 = 6000[/tex] cubic feet + [tex]2700[/tex] cubic feet [tex]= 8700[/tex] cubic feet

Therefore, the volume of airflow needed for the house is [tex]8700[/tex] cubic feet.

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The area of the prism is given by the sum of the areas of all the parts that compose the prism.

The parts that compose the prism are given as follows:

Hence the area of the prism is given as follows:

A = 3 x 5 + 5 x 10 + 2 x 1/2 x 3 x 10

A = 95 m².

The volume is given by the multiplication of the base area by the height, hence:

Thus:

V = 15 x 10 = 150 m³.

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Option (c) 1/3 is the correct answer.Let us first understand the given problem,It is given that the fair 6-sided die is rolled and let X indicates the event that an odd number is rolled and Y indicates the event that 3,4, or 5 is rolled.

P(X=0,Y=1)Solution:When an odd number is not rolled, then an even number is rolled. So, the possible even numbers that can be rolled on a die are 2,4 and 6. Therefore,X = 0, when an even number is rolledY = 1, when 3, 4 or 5 is rolledLet's find P(X=0,Y=1).P(X = 0, Y = 1) = P(rolling 4) = 1/6The sample space for a fair die will be {1,2,3,4,5,6}.

The odd numbers are {1,3,5}. Therefore,P(X = 1) = probability of getting an odd number= 3/6 = 1/2 (3 possible odd numbers out of 6)P(X = 0) = probability of getting an even number= 3/6 = 1/2 (3 possible even numbers out of 6)P(Y = 1) = probability of getting 3, 4, or 5= 3/6 = 1/2 (3 possible numbers out of 6)P(Y = 0) = probability of getting 1, 2, or 6= 3/6 = 1/2 (3 possible numbers out of 6)P(X = 0, Y = 1) = P(rolling 4) = 1/6. Therefore, P(X=0, Y=1) = 1/6Therefore, option (c) is correct.

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Answer: D - 216 miles

Explanation: The rest stop is the y-intercept in the graph because that is when he begins to travel home at a constant speed. Looking at the graph, the y-intercept falls right before 220 so the closest answer would be 216 miles.

If Maria state that (-4,2) (2,4),(2,-2),(-4,-1) are the coordinate pairs of the vertices of her figure, then the area of her quadrilateral figure is equals to the 9 sq. units.

A quadrilateral is a four-sided and 2D geometrical figure whose sum of all the four internal angles is 360°. Also, it has 4 edges and four vertices (or corners). Let's consider the vertices of a quadrilateral ABCD be A( x₁,y₁), B(x₂,y₂), C(x₃,y₃), D(x₄,y₄). The area of quadrilateral ABCD is written as A = (1/2) |(x₁y₂ + x₂y₃ + x₃y₄ + x₄y₁) – (x₂y₁ + x₃y₂ + x₄y₃ + x₁y₄)|

Now, Maria defines a quadrilateral with the following vertices (-4,2),(2,4),(2,-2),(-4,-1). After comparing these vertices with (x₁,y₁),(x₂,y₂), (x₃,y₃), (x₄,y₄), we see, x₁ = -4 ,y₁ = 2, x₂ = 2, y₂ = -2, x₃ = 2, y₃ = -2, x₄ = -4, y₄ = -1. Substitute all known values into above formula, Area of her quadrilateral figure, A = (1/2)|((-4)(-2) + 2(-2) + 2(-1) + (-4)2) – (2×2 + 2×(-2) + (-4)(-2) + (-4)(-1))|

= (1/2)|( 8 - 4 - 2 - 8) - (4 - 4 + 8 + 4)|

= (1/2)|-6 - 12| = 9 sq. units

Hence, required area of quadrilateral is 9 sq. units.

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Complete question:

Maria states that (-4,2) (2,4),(2,-2),(-4,-1) are the coordinate pairs of the vertices of her figure. Calculate the area of her figure.

a country exports crayfish to overseas markets. the buyers are prepared to pay high prices when the crayfish arrive still alive. if x is the number of deaths per dozen crayfish, the probability distribution for x is given by: a. Find k. b. Over a long period

A. To find k, you need to calculate the expected value of the random variable x, which is the number of deaths per dozen crayfish. This can be done by summing up the products of all the values of x multiplied by their respective probabilities. Thus,

                    k = ∑(xi * Pi)

                      = (1 * 0.3) + (2 * 0.3) + (3 * 0.2) + (4 * 0.2)

                      = 2.6

B. The mean number of deaths per dozen crayfish is given by the expected value of x, which is 2.6.

C. To find the standard deviation for the probability distribution, we need to calculate the variance of x. This can be done using the formula,

                 σ2 = ∑((xi - k)2 * Pi)

                      = (0 - 2.6)2 * 0.3 + (1 - 2.6)2 * 0.3 + (2 - 2.6)2 * 0.2 + (3 - 2.6)2 * 0.2

                      = 0.84

Therefore, the standard deviation for the probability distribution is σ = √0.84 = 0.92.

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The hypotheses for a chi-square test of independence on the data that auditors compared opinions about treatment (very good/acceptable/poor) at four VA hospitals (labeled a,b,c,d) among veterans aged 50 and above are:

Null hypothesis, H0: There is no association between the opinions about treatment of the VA hospitals and veterans aged 50 and above.

Alternative hypothesis, Ha: There is an association between the opinions about treatment of the VA hospitals and veterans aged 50 and above.

Hypothesis Testing is a type of statistical analysis in which you put your assumptions about a population parameter to the test. It is used to estimate the relationship between 2 statistical variables.

An analyst performs hypothesis testing on a statistical sample to present evidence of the plausibility of the null hypothesis. Measurements and analyses are conducted on a random sample of the population to test a theory. Analysts use a random population sample to test two hypotheses: the null and alternative hypotheses.

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Answer:

29.12 square cm

Step-by-step explanation:

     Side = a = 8.2 cm

    [tex]\boxed{\bf Area \ of \ equilateral \ triangle = \dfrac{\sqrt{3}}{4}a^2}[/tex]

                                                       [tex]\sf = \dfrac{\sqrt{3}}{4}*8.2*8.2\\\\= \sqrt{3}*4.1 * 4.1\\\\= 1.732 * 4.1 *4.1\\\\= 29.12 \ cm^2[/tex]

After 8 years, the total amount is ₹38,416 and the compound interest is ₹28,416.

What is the total amount and compound interest earned on ₹10,000 invested at 20% interest compounded every 2 years for 8 years?

To find the compound interest and the total amounts after eight year with interest compounded every two years, we'll use the compound interest formula:

Total Amount (A) = P(1 + r/n)¹/²(nt)

Where:
P = Principal = ₹10,000
r = Rate of interest = 20% = 0.2
n = Number of times the interest is compounded in a year (every 2 years, so n = 1/2)
t = Time in years = 8 years

Convert the interest rate to a decimal by dividing by 100:
20% ÷ 100 = 0.2

A = ₹10,000x (1 + 0.2¹/²)(1/2 x 8)

Calculate the expression inside the parentheses:
1 + 0.2/(1/2) = 1.4

Calculate the exponent (1/2x 8):
1/2x 8 = 4

Calculate the total amount:
A = ₹10,000 x (1.4)^4
A = ₹10,000 x3.8416
A = ₹38,416

Step 6: Calculate the compound interest:
Total interest = Total amount - Principal
Total interest = ₹38,416 - ₹10,000
Total interest = ₹28,416

So, after eight years, the total amount is ₹38,416 and the compound interest is ₹28,416.

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Answer:

Stacy rented a truck for one day there was a base fee of $16.95 and there was an additional charge of 93 cents for each model driven. stacy had to pay $143.43 when he returned the truck. for how many miles did she drive the truck​

Step-by-step explanation:

Let's start by subtracting the base fee from the total cost:

$143.43 - $16.95 = $126.48

Now, we can divide the remaining cost by the cost per mile:

$126.48 ÷ $0.93/mile ≈ 136 miles

Therefore, Stacy drove the truck for approximately 136 miles.

Therefore , the solution of the given problem of unitary method comes out to be V has a value of -13/3.

By using preexisting variables, this common convenience, or all essential components from the initial Bishop malleable study that adhered to a specific methodology, the objective may be accomplished. If the term affirmation result does not occur, both essential components will event miss the statement; however, if it does, it then becomes possible to reach the entity once more.

Here,

TU = 4v and QR = 5v plus 17 allow us to write:

=> QR = TU + UP + PS + SR + RQ

Inputting the numbers provided yields:

=> 5v + 17 =  4v + UP + v + 26 + SR + 5v plus

When we simplify the solution, we obtain:

=> UP + SR + 6v + 26 = 0

Because UP and SR are opposite and equivalent, we can write:

=> UP = -SR

By replacing this in the preceding solution, we obtain:

=> UP - UP + 6v + 26 = 0

When we simplify the solution, we obtain:

=> 6v + 26 = 0

26 is subtracted from both parts to yield:

=> 6v = -26

When we multiply both parts by 6, we get:

=> v = -26/6

If we simplify, we get:

=> v = -13/3

V therefore has a value of -13/3.

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From the given information provided, the probability that it will rain both days is 0.04 option A.

Since we are assuming that the chance of rain is independent of the day, we can use the multiplication rule of probability to find the probability that it will rain on both days.

Let's assume that the probability of rain on any given day is p. Then, the probability of no rain on that day is 1-p.

Therefore, the probability that it will rain on both days is:

P(rain on both days) = P(rain on day 1) × P(rain on day 2)

= p × p

= p²

Since the problem does not give us a specific value of p, we cannot determine the exact probability of rain on both days. However, we can use one of the answer choices to estimate the probability of rain on both days.

Looking at the answer choices, the only choice that is a perfect square is 0.04. Therefore, we can assume that p² = 0.04, which means that p = 0.2.

So, if the probability of rain on any given day is 0.2, then the probability of rain on both days is:

P(rain on both days) = p²

= 0.2²

= 0.04

Therefore, the answer is A. 0.04.

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Answer:

x = 36

Step-by-step explanation:

[tex] \frac{12}{14} = \frac{x}{42} [/tex]

[tex]x = 36[/tex]

[tex]42 \div 14 = 3[/tex]

[tex]3 \times 12 = 36[/tex]

The equation of line B is y = (1/5)x + 0, which can be simplified to y = (1/5)x.

An equation is a statement that shows the equality between two expressions. It typically contains one or more variables and may involve mathematical operations such as addition, subtraction, multiplication, division, exponentiation, or roots. An equation can be solved by finding the value(s) of the variable(s) that make the equation true. Equations are used extensively in mathematics, science, engineering, and other fields to describe relationships between different quantities and to make predictions or solve problems.

Here,

Since line B is perpendicular to line A, the product of their gradients is -1. Therefore, the gradient of line B is 1/5.

a) To find the y-intercept of line B, we need to know a point on the line. Since we don't have one, we can use the fact that the y-intercept is the point where the line intersects the y-axis. To find this point, we can set x = 0 in the equation of line B:

y = (1/5)x + c

0 = (1/5)(0) + c

c = 0

Therefore, the y-intercept of line B is (0,0).

b) The equation of line B is y = (1/5)x + 0, which can be simplified to y = (1/5)x.

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We can see that the linear approximation appears to be the best for function g since it is closer to g for a larger domain than it is to f and h. The approximation looks worst for function f since f moves away from Lf faster than g and h do. Hence, the linear approximation is the worst for function f.

Given that f(x) = (x - 1)^2, g(x) = e^(-2), and h(x) = ln(1+2x) - 2x.
(a) Find the linearizations of f, g, and h at a = 0.
The linearization of f at a = 0 is given by
Lf(x) = f(0) + f'(0)(x - 0)
     = (0 - 1)^2 + 2(0 - 1)(x - 0)
     = -x + 1
     The linearization of g at a = 0 is given by
Lg(x) = g(0) + g'(0)(x - 0)
     = e^(-2) + 0(x - 0)
     = e^(-2)
     The linearization of h at a = 0 is given by
Lh(x) = h(0) + h'(0)(x - 0)
     = (ln(1 + 2(0)) - 2(0)) + [(1/(1 + 2(0)))2 - 2](x - 0)
     = -2x
Graph f, g, and h and their linear approximations. For which function is the linear approximation best? For which is it worst? Explain.
The graphs of f(x) = (x - 1)^2, g(x) = e^(-2), h(x) = ln(1+2x) - 2x, and their respective linear approximations Lf(x) = -x + 1, Lg(x) = e^(-2), and Lh(x) = -2x.

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The explicit function defines this arithmetic sequence:

    C.  f(n) = 8n − 359

Explicit Function:

An explicit function is a function expressed with arguments. For example, y = 4x – 7 is self-explanatory, where y is the dependent variable and depends on the independent variable x.

According to the Question:

The first element of the given arithmetic sequence is -351, and the tolerance is (-343 -(-351)) = 8. The tolerance is a multiplier of n in the explicit function.

We can identify the appropriate explicit function by finding the one that correctly describes the sequence. Evaluating each for n=1 is sufficient.

(A) f(1) = 8 -351 = -343

(B) f(1) = -8 -351 = -359

(C) f(1) = 8 -359 = -351

(D) f(1) = -8 +359 = 351

The sequence is defined by the explicit function :

                  f(n) = 8n -359

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A vertical bar chart that shows frequency on the y-axis is called a histogram. It is a graph showing the distribution of continuous data.

Histograms are used to give an estimate of the probability distribution of a continuous variable sample. Additionally, a subset or part of a population is called a sample. A population is divided into groups, and some groups are selected, and all observations from each selected group are included in the sample. This is called stratified random sampling.

A collection of all data that is of interest is known as the universe.

A collection of attributes, labels, or nonnumerical entries is known as categorical data. This type of data is descriptive in nature, as it allows us to identify what features the data has or belongs to. For instance, age group, gender, and occupation are examples of categorical data. A sample where the population is divided into groups and several are randomly sampled from each group is called a cluster sample. Cluster sampling is an excellent method for conducting a survey when the population is widespread and heterogeneous.

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Answer: View answer in explanation below.

Step-by-step explanation: Let's use variables to represent the unknown quantities.

Let x be the number of $5 clearance mystery books purchased.

Let y be the number of $12 regular-priced science fiction books purchased.

We can set up a system of equations based on the given information:

5x + 12y = 126 (total amount spent)

x + y = total number of books purchased

We need to solve for x and y.

Let's use the second equation to solve for one variable in terms of the other:

y = total number of books purchased - x

Now we can substitute this expression for y into the first equation:

5x + 12(total number of books purchased - x) = 126

Simplifying and solving for x:

5x + 12total number of books purchased - 12x = 126

-7x + 12total number of books purchased = 126

-7x = -12total number of books purchased + 126

x = (12total number of books purchased - 126)/7

Since x must be a whole number (you can't buy a fraction of a book), we need to find a value of total number of books purchased that makes x a whole number. We can start by trying different values of total number of books purchased:

If total number of books purchased is 10:

x = (12(10) - 126)/7 = -6/7 (not a whole number)

If total number of books purchased is 11:

x = (12(11) - 126)/7 = 6/7 (not a whole number)

If total number of books purchased is 12:

x = (12(12) - 126)/7 = 6/7 (not a whole number)

If total number of books purchased is 13:

x = (12(13) - 126)/7 = 12/7 (not a whole number)

If total number of books purchased is 14:

x = (12(14) - 126)/7 = 18/7 (not a whole number)

If total number of books purchased is 15:

x = (12(15) - 126)/7 = 24/7 (not a whole number)

If total number of books purchased is 16:

x = (12(16) - 126)/7 = 30/7 (not a whole number)

If total number of books purchased is 17:

x = (12(17) - 126)/7 = 36/7 (not a whole number)

If total number of books purchased is 18:

x = (12(18) - 126)/7 = 42/7 = 6 (a whole number)

So, you bought 6 $5 clearance mystery books and 12 - 6 = 6 $12 regular-priced science fiction books.

The probability that the second dice lands on an even number given that the first one landed on an odd number is 1/2 or 0.5.

Step-by-Step Explanation:Let A be the event that the first dice rolls an odd number, and let B be the event that the second dice rolls an even number. We want to find P(B|A), which is the probability of B given A. This can be found using the formula:P(B|A) = P(A and B) / P(A) We know that P(A) = 1/2, as half the numbers on a six-sided dice are odd.

To find P(A and B), we need to find the probability that both dice roll the desired numbers simultaneously. Since we know that the first dice rolled an odd number, only half of the numbers are possible for the second dice to be even. Therefore, P(A and B) = 1/2 x 1/2 = 1/4. So:P(B|A) = P(A and B) / P(A) = (1/4) / (1/2) = 1/2 or 0.5. Therefore, the probability that the second dice lands on an even number given that the first one landed on an odd number is 1/2 or 0.5.

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