discuss the advantages and disadvantages of using sampling to reduce the number of data objects. would simple random sampling (without replacement) be a good approach to sampling? why or why not? what kind of sampling method that you would like to use? g

If 7 out of every 12 coins are nickles (7/12) and 3 out of every 12 coins are dimes (3/12), there has to be 2 quarters out of every 12 coins (2/12)

Now, the ratio would be:

The equation of the line is g(x) = -1/4x + 9.

Given,

g(0) = 9

g(8) = 7

Here,

We can consider this as points:

(x₁, y₁) = (0, 9)

(x₂, y₂) = (8, 7)

Now lets find the slope of the line.

Slope, m = (y₂ - y₁) / (x₂ - x₁)

Slope, m = (7 - 9) / (8 - 0)

Slope, m = -2/8

Slope, m = -1/4

Now, the slope-intercept form:

y = mx + b

here,

9 = -1/4 × 0 + b

9 = b

Now,

equation of line,

y = -1/4x + 9

That is,

g(x) = -1/4x + 9

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We are given that Jane used 200 minutes and the cost was $75, and also she used 680 minutes and the cost was $195. To determine a function of the cost "C" as a function of the minutes "x" we will assume that the behavior of this function is that of a line. Therefore, the function must have the following form:

Where "m" is the slope and "b" the y-intercept. We will determine the slope using the following formula:

Where:

Are points in the line. The given points are:

Substituting in the formula for the slope we get:

Solving the operations we get:

Now we substitute in the formula for the line:

Now we determine the value if "b" by substituting the first point. This means that when C = 200, x = 75.

Solving the product:

Now we subtract 18.75 from both sides:

Therefore, the formula of the cost is:

Part B. We are asked to determine the cost is there is a consumption of 323 minutes. To do that we will substitute in the formula for "C" the value of x = 323.

Solving the operations we get:

Therefore, the cost is $262.

Answer:

Step-by-step explanation:

We will make use of algebra here.

First of all, we know that the monthly fee will be the same throughout all the months.
So, let's consider that cost to be the yet-to-find constant: [tex]a[/tex].

A charge is accumulated for every minute on the call, so let's consider that minutely charge to be the constant: [tex]b[/tex].

[tex]x[/tex] is the number of minutes spent on the call.
So, the total charge after talking for [tex]x[/tex] minutes would be:

[tex]b \times x\\=bx[/tex]

The monthly cost is the sum of the monthly fee and the total charge.

So, if this is represented mathematically, we get:

[tex]C(x)= a+bx[/tex]

A piece of information that we have is that, after calling for 200 minutes (which means [tex]x=200[/tex]), the monthly cost ( [tex]C(x)[/tex] ) would be $75.

Upon substituting these values in the equation we found above, we get:

[tex]C(x)=a+bx\\\\75=a+200b[/tex]

Similarly, we have another piece of information, which states that calling for 680 minutes ([tex]x=680[/tex]) produced a monthly cost of $195.

Upon substituting these values in the equation we found above, we get:

[tex]C(x)=a+bx\\\\195=a+680b[/tex]

And, thus we have found a system of equations:

 [tex]a+200b=75\\a+680b=195[/tex]

For the first equation, let's make [tex]a[/tex] the subject:

[tex]a+200b=75\\\\a+200b-200b=75-200b\\\\a=75-200b[/tex]

Substitute this expression for [tex]a[/tex] into the second equation:

[tex]a+680b=195\\\\75-200b+680b=195\\\\75+480b=195[/tex]

Find the value of [tex]b[/tex] using this equation:

[tex]75+480b=195\\\\75+480b-75=195-75\\\\480b=120\\\\\frac{480b}{480}=\frac{120}{480}\\\\b=\frac{1}{4}[/tex]

Insert the value for [tex]b[/tex] into the expression for [tex]a[/tex]:

[tex]a=75-200b\\\\a=75-200(\frac{1}{4})\\\\a=75-50\\\\a=25[/tex]

Since we have the values for the constants [tex]a[/tex] and [tex]b[/tex], we can complete the function/equation  [tex]C(x)[/tex]:

[tex]C(x)=a+bx\\\\C(x)=25+\frac{1}{4}x[/tex]

So, the answer for (A) is:

[tex]C(x)=25+\frac{1}{4}x[/tex]

For (B), we have to find the monthly bill/cost ( [tex]C(x)[/tex] ) when 323 minutes have been spent on calling.

So, we just have to substitute [tex]x[/tex] for 323, since [tex]x[/tex] represents the number of minutes spent on calling:

[tex]C(x)=25+\frac{1}{4}x\\\\C(x)=25+\frac{1}{4}(323)\\\\C(x)=25+80.75\\\\C(x)=100.75[/tex]

The answer for (B) is [tex]\$100.75[/tex]

predicted value of the slope , A regression model called simple linear regression uses a straight line to calculate the association between one independent variable and one dependent variable.

When modeling the relationship between a scalar answer and one or more explanatory variables in statistics, linear regression is a linear method. Simple linear regression is used when there is only one explanatory variable, and multiple linear regression is used when there are numerous variables.

A regression model called simple linear regression uses a straight line to calculate the association between one independent variable and one dependent variable. Both variables ought to have numerical values.

When the parameters are linear, a regression equation (or function) is said to be linear in statistics. Although the predictor variables can be transformed in ways that result in curvature, the equation must be linear in the parameters.

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in linear regression, the fitted value is the:  predicted value of the dependent variable

When you enter the values of the predictors, factor levels, and other inputs into a statistical model, the predicted mean response value is known as the fitted value.

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The Number of small and large boxes shipped are 10 and 5 respectively.

Large boxes :

Volume = 18 cubic feets

Let number of large boxes = b

Small boxes :

Volume = 10 cubic feets

Number of small boxes = 2b

Total volume shipped = 190 cubic feet

To obtain total volume shipped :

(Number of small boxes × volume of small boxes) + (Number of large boxes × volume of large boxes

Writing as a system of equation :

(10 × 2b) + (18 × b)

20b + 18b = 190 cubic feets

38b = 190

b = 190 ÷ 38

b = 5

Hence,

Number of large boxes = 5

Number of small boxes = 2(5) = 10

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Answer: Solve 5x=(2x+3)

Step-by-step explanation:

The result of 3.0×[tex]10^{15}[/tex] over 5.0×[tex]10^6[/tex] in scientific notation is 6×[tex]10^8[/tex]

The first number = 3.0×[tex]10^{15}[/tex]

The second number = 5.0×[tex]10^6[/tex]

3.0×[tex]10^{15}[/tex] over 5.0×[tex]10^6[/tex] means we have to divide the first number by the second number

The scientific notation is the a method of representing the a very large number or a very small number in a simple way. The general from of the scientific notation is when a number from 1 to 10 is multiplied by the power of 10.

Here we have to divide 3.0×[tex]10^{15}[/tex] by 5.0×[tex]10^6[/tex]

3.0×[tex]10^{15}[/tex]  ÷ 5.0×[tex]10^6[/tex] = (3/5) × [tex]10^{15-6}[/tex]

= 0.6×[tex]10^9[/tex]

= 6×[tex]10^8[/tex]

Hence, the result of 3.0×[tex]10^{15}[/tex] over 5.0×[tex]10^6[/tex] in scientific notation is 6×[tex]10^8[/tex]

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Answer:

0.1

Step-by-step explanation:

chance of pulling out a blue marble can be described as 8 equally probable outcomes (blue marbles) out of 20 equally probable outcomes (all marbles).

Similarly, the chance of pulling out a green marble is 5 out of 20.

In total, we have 8*5 (combinations of blue then green) outcomes out of 20*20 (any two marbles):

8*5 / (20*20) = 40 / 400 = 1/10 = 0.1

The weight in pounds of the fourth dog, is 55 lbs.

What is weight?

The force exerted on an object by gravity is known as its weight. The gravitational force acting on the item is referred to as weight in several common textbooks. Some people refer to weight as a scalar quantity that measures the gravitational force's strength.

As given, Ben is walking with three dogs that weigh an average of 75 pounds each. Ben begins to walk with a fourth dog, and the average weight of the dogs decreases to 70 pounds.

The total weight of the first three dogs is 225 pounds.

This amount, plus the weight of the fourth dog, divided by total number of dogs, is the new average weight:

[tex]\frac{d+225}{4} = 70\\d + 225 = 280\\d = 280 - 225\\d = 55 lbs[/tex]

Therefore, the weight of the fourth dog is 55 lbs.

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2(x -2) = 50 is also true for the same value of x.

Given,

Part 1:

When a cardboard box is empty, its weight is 0.6 pounds.

It is filled with 15 bags of beans and a 4-pound bag of rice.

The total weight of the box and the contents inside it is 25.6 pounds.

Let the weight of 15 bean bags is 15b. The given scenario can be represented by the equation as follows :

0.6+15b+4=25.6 ....(A)

Taking like terms together,

15b=25.6-0.6-4 ...(1)

15b = 21  ....(2)

Equation (1) or (2) can be the equivalent equation for the equation (A).

Part 2:

Solve the equation:

7.5d = 2.5d, Lin divides each side by 2.5d,

and Elena subtracts 2.5d from each side.

Now, 7.5d/2.5d = 2.5d/2.5d

3 = 1

It is not equal, There is no solution.

a. 7.5d - 2.5d = 2.5d - 2.5d

5d/5 = 0/5

b. What is the solution ?

Solution is d = 0

Part 3:

Given,
The equation 4(x - 2) = 100  is a true equation for a particular value of x.

Explanation: The basic property of the equation is that if you multiply or divide both sides of the equation by the non-zero whole , the equation still holds.

In the Equation : 4 (x - 2) =100 divide by 2 on both sides because 2 is common factor of (4,10)

So, 4(x - 2) =100

1/2 x 4(x-2) = 1/2 x 100

= 2(x-2) = 50

Above all, 2(x -2) = 50 is also true for the same value of x.

Hence, 2(x -2) = 50 is also true for the same value of x.

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In the pair of given angles, the value of 2x and x is 52° and 26°.

So, the value of 2x and x:

Now, solve for x and 2x as follows:

Therefore, in the pair of given angles, the value of 2x and x is 52° and 26°.

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Part A

Explanation: Count the number of leaves.

======================================================

Part B

Reason:

Look at the largest stem (9) and the largest leaf of this largest stem (5).

This forms the largest value of 95.

The smallest value is 41 since it corresponds to the smallest stem and smallest leaf.

The term "min" and "max" are often used here.

======================================================

Part C

Explanation:

The data set is

41, 52, 57, 58, 65, 66, 70, 75, 78, 80, 81, 95

There are n = 12 items in this set.

Splitting in half gets us n/2 = 12/2 = 6.

The item in slot 6 is 66, and the next item over is 70.

The midpoint of these values is the median. (66+70)/2 = 68.

This midpoint rule only applies if n is even.

To find the range, we subtract the largest and smallest items.

range = max - min = 95 - 41 = 54

======================================================

Part D

Reason:

The stem 8 doesn't have a leaf of 5 attached to it.

It only has the leaves 0 and 1 to form the numbers 80 and 81.

Answer:

(I) y=10-6x. (ii) y=x/-2 - 3

Answer:

From the question,

The formula for the growth rate will be calculated using the formula below

In,

Given that

Hence,

P1 = 12.6

Also, we will have P2 to be

Hence,

P2 = 17.6

Therefore,

The formula for Pn will be represented below as

The explicit formula for Pn will be

To figure out the values of P9. we will substitute the value of n=9 in the equation below

Hence,

P9 = 185.9

In the line, the point B represents the integer -3, because it is 3 units left from 0.

Its opposite is the number 3, that is 3 units right from 0.

Graph is attached below.

Given,

y = 2x - 4

We have to draw a graph according to this

Here,

x E {-2; "-1;" 0; 1; 2}:

Image is attached.

How to draw a graph?

First, label and draw your X and Y axes at a straight angle. Axis Y is vertical, whereas axis X is horizontal. Write the scale for each axis down the line and mark the junction as 0, then draw a line. Calculate the values of Y for various values of X after drawing the axes.

So, the graph is given below.

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The remaining zeroes of p are x = [tex]\sqrt{6}[/tex] or x = -[tex]\sqrt{6}[/tex].

Given,

The equation is :

p(x) = [tex]4x^3+x^2-24x-6[/tex]

c = -1/4

To find the remaining zeroes of p

Now, According to the question:

[tex]4x^3+x^2-24x-6[/tex]

Apply grouping

[tex](4x^3+x^2)+(-24x-6)=0[/tex]

Factor out common factor

[tex]x^{2} (4x+1)-6(4x+1)=0[/tex]

[tex](x^2-6)(4x+1)=0[/tex]

Apply zero Product Property

4x +1 = 0 or [tex]x^{2} -6=0[/tex]

x = -1/4 or x = [tex]\sqrt{6}[/tex] or x = -[tex]\sqrt{6}[/tex]

Hence, The remaining zeroes of p are x = [tex]\sqrt{6}[/tex] or x = -[tex]\sqrt{6}[/tex].

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The volume of the glass is 454.16cm² and the number of glasses filled upto a horizontal line of 2 cm from top is 4

A cylindrical drinking glass has radius 3 cm and height 8 cm.

The volume of a cylinder is 2πr²h

= 2 (3.14) 3² x 8

= 452.16cm³

The jug contains 1.5 litres of water

1 litre = 1000cm³

1.5 litre = 1500cm³

The volume of glass if it is filled upto a horizontal line 2 cm from the top.

volume =  2πr²h

= 2 (3.14) 3² x 6

= 339.12cm³

Number of glasses filled = 1500/339.12 = 4.42

4 glasses can be filled up to the line from the jug

Therefore, the volume of the glass is 454.16cm² and the number of glasses filled upto a horizontal line of 2 cm from top is 4

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The table that represents a linear function is Table 1. Thus, the correct option is A.

A linear equation is an equation in which each term has at max one degree. Linear equation in variable x and y can be written in the form y = mx + c.

Linear equation with two variables, when graphed on a cartesian plane with axes of those variables, give a straight line.

We know that, slope m= (y2-y1)/(x2-x1)

Table 1:

Put (x1, y1)=(1, 5) and (x2, y2)=(2, 9) in slope formula

That is, (9-5)/(2-1)

= 4

Similarly, the slope between last two points is (9-5)/(4-1)

=4

Table 2:

Put (x1, y1)=(1, -5) and (x2, y2)=(2, 10) in slope formula

That is, (10+5)/(2-1)

= 15

Similarly, slope between last two points (20+15)/(4-3)

=35

Hence, the table that represents a linear function is Table 1. Thus, the correct option is A.

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The slope of the given lines are:

Graph 1 = 1/3

Graph 2 = -1/3

Graph 3 = 3

Graph 4 = -3

To find the slope (m) of a given line on a coordinate plane, choose any two points on the line, (x1, y1) and (x2, y2), then find the slope by plugging in the values of the coordinates into the formula below:

Slope of a line (m) = change in y / change in x = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex].

Find the slope of Graph 1:

Using two points on the line, (0, 0) and (3, 1):

Slope of graph 1 (m) = (1 - 0)/(3 - 0)

Slope of graph 1 (m) = 1/3

Find the slope of Graph 2:

Using two points on the line, (0, 0) and (-3, 1):

Slope of graph 2 (m) = (1 - 0)/(-3 - 0) = 1/-3

Slope of graph 2 (m) = -1/3

Find the slope of Graph 3:

Using two points on the line, (0, 0) and (1, 3):

Slope of graph 3 (m) = (3 - 0)/(1 - 0) = 3/1

Slope of graph 3 (m) = 3

Find the slope of Graph 4:

Using two points on the line, (0, 0) and (-1, 3):

Slope of graph 4 (m) = (3 - 0)/(-1 - 0) = 3/-1

Slope of graph 4 (m) = -3

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Answer:

-44.09

Step-by-step explanation:

Trust bro i am passing collage math at 15

Answer:

Step-by-step explanation:

-0.92 2.49

-5.62 9.76

Rise = 9.76 - 2,49 = 7.27

Run: -5.62 - (-0.92) = -4.7

Slope (Rise/Run) = (7.27.`-0.92) = -1.55

The line has the form:

y = 1.55x + b

We need to find a value of b that forces the line through both point, Use one of the points and solve for b. I'll use (-0.92, 2.49).

y = 1.55x + b

2.49 = 1.55(-0.92) + b

b = 2.49 - 1.426 = 1.064

The equation is y = 1.55x + 1.0

Answer:

39.3

but the 3 in the the tenths place is repeating

Step-by-step explanation:

Answer:

39.33...

Step-by-step explanation:

Using PEMDAS,

First, 0.33 / 0.9 = 0.366...

Second, 0.366... * 20 = 7.33...

Then, 6.4 / 0.2 = 32

Lastly, 7.33... + 32 = 39.33...

The parent function of the quadratic function is

∵ x is added by 7

∴ The graph of the function is translated 7 units to the left

∴ The image of the function will be

∵ The function is added by -4

∴ The graph of the function translated 4 units down

∴ The image of the function will be

The transformation is

Shift 7 units left and shift down 4

The answer is D

The cost for a year is cheaper in Gym A.

The value of k for the cheaper membership is $10.

An equation in the form y = kx is known as a linear equation. A linear equation is an equation that increases at a constant rate.

In the equation : y = kx

k = y/x

Cost per month at Gym A = $50 / 5 = $10

Cost per month at Gym B = $40 / 3 = $13.33

Membership cost at Gym A for a year = $10 x 12 = $120

Membership cost at Gym B for a year = $13.33 x 12 = $160

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Answer: wut

Step-by-step explanation: wut

Answer:

Step-by-step explanation:

To solve the equation of 7/3x+1/3x=1+5/3x, isolate the term of x from one side of the equation.

First, you subtract by 5/3x from both sides.

[tex]\rightarrow \sf{\dfrac{7}{3}x+\dfrac{1}{3}x-\dfrac{5}{3}x=1+\dfrac{5}{3}x-\dfrac{5}{3}x}[/tex]

Solve.

[tex]\rightarrow \boxed{\sf{x=1}}[/tex]

Therefore, the solution is x=1, which is our answer.

I hope this helps, let me know if you have any questions.

Answer:

$302.69

Step-by-step explanation:

399 x 30% = 119.7 # finding how much you save

399 - 119.7 = 279.3 # how much the item costs with the sale

279.3 x 8.375 = 23.39 # the sales tax for the discounted item

297.3 + 23.39 = 302.69 # adding sales tax to the discounted item

I think this is right. I was never that great at sales tax and discount.

Answer:

23

Step-by-step explanation:

f(3) = f(2) + f(1) = 5 + 4 = 9

f(4) = f(3) + f(2) = 9 + 5 = 14

f(5) = f(4) + f(3) = 14 + 9 = 23

Answer:

substituting n by 5 gives;

f(5)=(5-1)+(5-2)=7