4 (7x +5)

Please show me how to work this out

The answers are given below:

Mean: μ = 60, Standard deviation: σ = 10

Mean: μ = 50, Standard deviation: σ = 8

Mean: μ = 49, Standard deviation: σ = 7.5

For a normal distribution, the empirical rule states:

99.7% of the data is within 3 standard deviations (σ) of the mean (μ)

68% of the data is within 1 standard deviation of the mean

95% of the data is within 2 standard deviations of the mean

99.7% data between 30 and 90:

μ - 3σ = 30, μ + 3σ = 90

Mean: μ = 60, Standard deviation: σ = 10

68% data between 42 and 58:

μ - σ = 42, μ + σ = 58

Mean: μ = 50, Standard deviation: σ = 8

95% data between 34 and 64:

μ - 2σ = 34, μ + 2σ = 64

Mean: μ = 49, Standard deviation: σ = 7.5

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Answer:

Slope = 0.5

Step-by-step explanation:

Slope of a Line passing through two points [tex](x_1 , y_1)[/tex] and [tex](x_2 ,y_2)[/tex] equal [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

Since our Line passes through the two points ( -3 , 5 ) and ( 5 , 9 )

Then the Slope = [tex]\frac{9-5}{5-(-3)}=\frac{4}{8} =0.5[/tex]

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{Slope\ formula\ is :\mathtt{\dfrac{y_2 - y_1}{x_2 - x_1} = slope}\rightarrow \dfrac{rise}{run} = slope}[/tex]

[tex]\textsf{Your labels :}\\\\\mathtt{y_2 \rightarrow 9}\\\mathtt{y_1 \rightarrow 5}\\\\\mathtt{x_2\rightarrow 5}\\\mathtt{x_1\rightarrow-3}[/tex]

[tex]\textsf{Your equation should look like : }\mathtt{slope = \dfrac{9 - 5}{5 - (-3)}}[/tex]

[tex]\textsf{Solving for your answer should be :}[/tex]
[tex]\mathtt{slope = \dfrac{9 - 5}{5 - (-3)}}[/tex]

[tex]\mathtt{slope = \dfrac{9 - 5}{5 + 3}}\\\textsf{(We got a positive (+) symbol because double negatives }(-)\textsf{ make a positive!})[/tex]

[tex]\mathtt{slope = \dfrac{4}{8}}}[/tex]

[tex]\mathtt{slope = \dfrac{4\div2}{8\div2}}[/tex]

[tex]\mathtt{slope = \dfrac{2}{4}}[/tex]

[tex]\mathtt{slope = \dfrac{2\div2}{4\div2}}[/tex]

[tex]\mathtt{slope = \dfrac{1}{2}}[/tex]

[tex]\large\textsf{Thus your \boxed{\textsf{answer}} should most likely be :}\\\\\\\large\boxed{\mathtt{slope = \dfrac{1}{2}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

The NBT is used to evaluate a student's academic readiness for tertiary education, whereas the APS is used to establish whether a student meets the minimal standards for admission to a certain course.

What is NBT scores?

The National Benchmark Test Project created the National Benchmark Test (NBT), a test. In order to determine a learner's academic preparation for university, a battery of examinations is utilized to evaluate their academic literacy, general knowledge, and mathematics proficiency.

The NBT pass mark is what?

The National Benchmark Tests do not have a passing score. Your results will be plotted on a benchmark scale, which will help the university determine if you are prepared for university-level work. Since the NBTs are merely a test of preparation for higher education, you cannot pass or fail them.

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Answer:

Step-by-step explanation:

Formula: A=πr2

3.14 x 17^2 = 907.46 in2

Answer: Slope-intercept form : y-y₁=m(x-x₁)

Passes through (-12, 7)

Slope = -5/3

m = slope

Simply plug everything in :)

y - y₁ = m(x - x₁)

y - 7 = -5/3(x + 12)

Simplify.

y - 7 = -5/3x - 20

Add 7 to both sides.

y = -5/3x = -13

~Hope I helped~

Step-by-step explanation:

After answering the provided question, we can conclude that As a result, function option A) 5/6 is the correct answer.

A function appears to be a hyperlink between two sets of numbers in mathematics, where each member of the first set (referred as the domain) corresponds to a certain representative of the second set (called the range). In other utterance, a function takes input from a set and produces output by another. Inputs are frequently represented by the variable x, and outputs are represented by the variable y. A function can be represented by a formula or a graph. The method y = 2x + 1 is an example of a conceptual model in which each value assigned to x yields a value of y.

Both Glass A and Glass B initially hold the same amount of liquid. Assume that the total amount of liquid that each glass can hold is equal to 6 units.

As a result, Glass A is initially filled with 3 units of liquid (1/2 of 6 units) and Glass B is initially filled with 2 units of liquid (1/3 of 6 units).

When the liquid from Glass B is poured into Glass A, the total amount of liquid in Glass A increases to 5 units (3 units + 2 units), and the glass is now completely filled.

So, after pouring the liquid from Glass B into it, the fraction of Glass A that is filled is 5/6.

As a result, option A) 5/6 is the correct answer.

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The calculated value of the derivative f'(x) at x = -2/3 if f(x) = 5x√(x + 1) is f'(-2/3) = 0

Given the function

f(x) = 5x√(x + 1)

Factor out 5

So, we have

f(x) = 5[x√(x + 1)]

The derivative is then calculated using the following chain rule

f'(x) = 5[du/dx * dy/du]

When differentiated, we have

f'(x) = 5[√(x + 1) + x/2[√(x + 1)]]

This gives

f'(x) = 5[3x + 2/2[√(x + 1)]]

So, we have

f'(x) = [15x + 10]/[2√(x + 1)]

Substitute -2/3 for x

f'(-2/3) = [15(-2/3) + 10]/[2√((-2/3) + 1)]

Evaluate

f'(-2/3) = [0]/[2√1/3]

Evaluate the quotient

f'(-2/3) = 0

Hence, the value of the derivative is 0

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The amount of money in the account after 17 years is approximately $49,222.26.

Investment is the act of allocating resources, such as money or time, with the expectation of generating a return or profit in the future. Investment can take many forms, such as investing in stocks, bonds, real estate, or businesses.

Investment is an important tool for individuals and businesses to build wealth and achieve financial goals. By investing in assets that appreciate in value or generate income, investors can increase their net worth and achieve long-term financial stability.

When making investment decisions, investors typically consider factors such as risk, return, liquidity, and diversification. Risk refers to the possibility of losing money, while return refers to the potential profit or income generated by the investment. Liquidity refers to how easily an investment can be converted into cash, while diversification refers to spreading investment across multiple assets to reduce risk.

Using the formula [tex]V= Pe^{rt}[/tex], where P = $34300, r = 0.02, and t = 17, we can find the value of the account after 17 years:

V = 34300 * [tex]e^{0.02*177[/tex]

V ≈ $49,222.26

Therefore, the amount of money in the account after 17 years is approximately $49,222.26.

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Answer:

First, we need to standardize the values using the formula:

z = (x - mu) / sigma

where x is the value, mu is the mean, and sigma is the standard deviation.

For $450: z = (450 - 400) / 50 = 1

For $550: z = (550 - 400) / 50 = 3

Using the 68-95-99.7 rule, we know that approximately 68% of the data falls within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations.

Since we are interested in the probability of a worker making between $450 and $550, we need to find the area under the normal curve between z = 1 and z = 3.

Using a standard normal table or calculator, we can find that the area under the curve between z = 1 and z = 3 is approximately 0.1359.

Therefore, the probability that a worker selected at random makes between $450 and $550 is 13.59% (rounded to two decimal places).

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let's call the weight of Karen's package "w" in pounds.

For the first courier, the cost is given by:

Cost = 20 + 2w

For the second courier, the cost is given by:

Cost = 12 + 3w

We know that these costs are equivalent, so we can set them equal to each other:

20 + 2w = 12 + 3w

Simplifying this equation, we get:

8 = w

So the weight of Karen's package is 8 pounds.

To find the cost, we can plug this weight into either of the equations above:

For the first courier:

Cost = 20 + 2(8) = 36

For the second courier:

Cost = 12 + 3(8) = 36

So it will cost Karen $36 to deliver her package, and the weight of the package is 8 pounds.

Answer:

14.3cm

Step-by-step explanation:

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

[tex]a^{2}[/tex] + [tex]7^{2}[/tex] = [tex]10^{2}[/tex]

[tex]a^{2}[/tex] + 49 = 100  Subtract 49 from both sides

[tex]a^{2}[/tex] + 49 - 49 = 100 - 49

[tex]a^{2}[/tex] = 51

[tex]\sqrt{a^{2} }[/tex] = [tex]\sqrt{51}[/tex]

a = 7.14142842854  This is a rounded number.  This is an irrational number.  That means that it never repeats or terminates.  It is like [tex]\pi[/tex].

We just found the left side of the base of the triangle.  We need to double this to find FG.

7.14142842854 x 2 = 14.2828568571

Round this to 1 decimal place 14.3

Helping in the name of Jesus.

Answer: 14.28 cm

Step-by-step explanation:

So, 10 squared = 7 squared + X squared.

This can be simplified to: 100 = 49 + X squared.

Then, you subtract 49, and are left with 51 = X squared

Then, take the square root if 51, you get approx. 7.14 cm.
since this is an equilateral triangle, the answer will be the same for the second half of the base.
So, 7.14 x 2, 14.28 cm

The statement that is NOT true about the frequency chart is "70% of the people spent less than 1 hour watching TV a week".

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

The statement that is NOT true about the frequency chart is "70% of the people spent less than 1 hour watching TV a week". This is because according to the table, the percentage of people who spent less than 1 hour watching TV is 50%, which means that half of the people surveyed watched less than 1 hour of TV each week.

Therefore, The statement that is NOT true about the frequency chart is "70% of the people spent less than 1 hour watching TV a week".

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The expressions whose solutions are represented by the graph are:

A. 5 - X > 4

D. 6x - 7 > 5

The mathematical expressions, whose solutions are represented by the graph are those that fall within the shaded region of the graph. For instance, in the mathematical expression, 5 - x > 4, the shaded region points to 4 and values greater than it.

So, this expression satisfies the condition and can be described as a solution represented by the graph.

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Answer: h = 7

Step-by-step explanation:

63 = 1/2 * 18 * h

63 = 9 * h

63 = 9h

*Divide 9 on both sides.

7 = h

Answer:

Step-by-step explanation:

1) -2

2) 0

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The equation that can be solved to predict the number of times Harris will spin a sum less than 10 is B) 12/500 = x/15

Harris should expect to spin a sum of 10 or greater 240 times.

It should be noted that to predict the number of times Harris will spin a sum less than 10, we need to find the probability of getting a sum less than 10 and multiply it by the total number of experiments (500).

The possible sums that can be obtained are: 5, 6, 7, 8, 9, 10, 11, and 12. The probability of getting a sum less than 10 is the sum of the probabilities of getting each of these outcomes, which is:

P(sum less than 10) = P(1 and 4, 1 and 5, 2 and 4, 2 and 5, 3 and 4, 3 and 5)

= 6/15 * 2/5

= 4/25

Multiplying this probability by the total number of experiments (500), we get:

Number of times Harris will spin a sum less than 10 = (4/25) * 500 = 80

Therefore, the correct equation to predict the number of times Harris will spin a sum less than 10 is: 12/500 = x/15

Part B: Based on the information, the possible outcomes that give a sum of 10 or greater are: 10, 11, and 12. The probability of getting a sum of 10 or greater is the sum of the probabilities of getting each of these outcomes, which is:

P(sum of 10 or greater) = P(1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5, 6 and 4, 7 and 3, 8 and 2, 9 and 1, 8 and 3, 7 and 4, 6 and 5)

= 12/15 * 3/5

= 36/75

= 12/25

Multiplying this probability by the total number of experiments (500), we get:

Number of times Harris should expect to spin a sum of 10 or greater = (12/25) * 500 = 240

Therefore, Harris should expect to spin a sum of 10 or greater 240 times.

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Answer: the slower bus travels at 55 miles per hour and the faster bus travels at 73 miles per hour.

Step-by-step explanation:

distance = rate x time

768 = 6x + 6(x + 18)

Simplifying this equation, we can distribute the 6 on the right-hand side:

768 = 6x + 6x + 108

Combining like terms, we get:

768 = 12x + 108

Subtracting 108 from both sides:

660 = 12x

Dividing both sides by 12:

x = 55

So the slower bus is traveling at 55 miles per hour. To find the speed of the faster bus, we can add 18:

x + 18 = 55 + 18 = 73

Answer: one is 55 and the other is 73

Step-by-step explanation:

lets say x is for the slower bus. for every hour the become x+x+18

and this is happening for 6 hours so its is 6(2x+18)=768

x=55

x+18=73

1. Data is approx bell-shaped and symmetric

2. Median is between 150 to 175

A histogram is a graphical representation of a frequency distribution of a set of continuous data. It is used to display the shape of the data and to show how frequently certain values occur within a given range or interval.

In a histogram, the x-axis represents the range or interval of the data, and the y-axis represents the frequency of occurrence of values within each interval.

The data is divided into a set of bins or intervals, and the height of each bar on the histogram represents the number of data points that fall within that particular bin. The bars of the histogram are typically drawn adjacent to each other, with no gaps between them, to emphasize the continuity of the data.

Therefore, from the histogram used to represent the given data, it can be seen that the data is symmetric and also the median has the values between 150 to 175

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After calculating the value of CB, we get a result of 3.45 cm. This means that the segment CB is 3.45 cm, given that the angle α is 25° and the segment AB is 8 cm.

CB = 8 cm * tan(25°)

≈ 3.45 cm

To find the segment CB, we need to use the tangent of the angle α (25°). We also need to know the length of the segment AB, which is 8 cm. To solve for CB, we use the equation CB = 8 cm * tan(25°). After calculating the value of CB, we get a result of 3.45 cm. This means that the segment CB is 3.45 cm, given that the angle α is 25° and the segment AB is 8 cm.

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Answer:

2,500,000

Step-by-step explanation:

To write 2.5 million, you can write it as 2,500,000. This is because one million is equal to 1,000,000. So, 2.5 million is equal to 2,500,000.

Answer:

2500000 <--- in numbers

Two million and five hundred thousand OR Two and a half million

In light of this, the cylinder's total surface area falls between approximately 1017.9 cm²and 1357.2 cm².

A cylinder's total surface area is equal to the sum of all of its faces' surface areas. The cylinder's total surface area—the sum of its curved and circular areas—has a radius of "r" and a height of "h." The entire surface area of the cylinder is calculated as follows:

Total Surface Area of Cylinder = 2r (h + r) square units.

The three-dimensional shape of a cylinder is made up of two parallel circular bases connected by a curved surface. It is seen as a prism since its base is a circular. It is frequently used as a container and can either be solid or hollow 13.

The following formula can be used to get a cylinder's total surface area:

A = 2πr² + 2πrh

where r is the cylinder's base's radius, h is the cylinder's height, and is a mathematical constant roughly equal to 3.14159.

Yet, we can locate a variety of potential surface areas using the provided information. With the assumption that the radius is equal to the feedback's half (9 cm), we can

after which, we can determine the surface area as follows:

A = 2π(9)² + 2π(9)(18) (18)

A=  2π(81) + 2π(2916)

A ≈ 1017.9 cm²

The surface area can be calculated as follows if we assume that the radius is equal to two-thirds of the feedback (i.e., r = 12 cm):

A = 2π(12)² + 2π(12)(18) (18)

A ≈ 1357.2 cm²

Complete question is given below:

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Answer:

20000

Step-by-step explanation:

because the x =1 and X=2 so is 1x2=2

Answer:

y = 3/2x -5

y= 3/2x -7

Step-by-step explanation:

since the two lines are parallel (never touch) they have the same slope, so find the slope of one of the lines (rise over run). Then, to find the y-intercept for the equations, simply look at where each of the lines cross the y-axis.

~lmk if u got Qs

Finding the limit of the function limx→0 ((sin( 1- cos4x))/(1 - cos4x)) = 1

The limit of a function is the value which the function tends to as the dependent variable tends to a particular value.

Since we require the limit limx→0 ((sin(1-cos4x))/(1-cos4x))

So, substituting x = 0 into the equation, we have

limx→0 ((sin(1-cos4x))/(1-cos4x)) = ((sin(1-cos4(0)))/(1-cos4(0)))

=  ((sin(1 - cos(0)))/(1 - cos(0)))

=  ((sin(1 - 1))/(1 - 1))

= sin0/0

= 0/0

Since we have an indeterminate form, we use L'hopital's rule which states that if limx→0 f(x) = limx→0 g(x) = 0,

Then limx→0 f(x)/g(x) = limx→0 f'(x)/g'(x)

So, limx→0 ((sin( 1- cos4x))/(1 - cos4x)) = limx→0 d((sin(1-cos4x))/dx/d(1-cos4x))/dx

Let 1 - cos4x = u and 4x = v

1 - cosv = u

=  limx→0 d((sin(1 - cos4x))/dx/d(1 - cos4x))/dx

=  limx→0 d((sinu)/dx/du/dx

=  limx→0 d((sinu)/du × du/dv × dv/dx ×/du/dv × dv/dx

Now du/dv = sinv and dv/dx = 4 and d

So,

limx→0 d((sinu)/du × du/dv × dv/dx ×/du/dv × dv/dx =  limx→0 d((sinu)/du × sinv × 4 ×/sinv × 4

=  limx→0 cosu × sinv × 4 ×/sinv × 4

=  limx→0 cos(1 - cos4x) × sin4x × 4 ×/sin4x × 4

= cos(1 - cos4(0)) × sin4(0) × 4 /sin(4(0) × 4

= cos(1 - cos0) × sin(0) × 4 /sin(0) × 4

= cos(1 - 1) × 0 × 4 /0 × 4

= cos(0) × 0 × 4 /0 × 4

=  1 × 0 × 4 /0 × 4

= 0/0

Since   limx→0 f'(x)/g(x) = 0/0, we differentiate again.

So

limx→0 cos(1 - cos4x) × sin4x × 4 /sin4x × 4  =  limx→0 dcos(1 - cos4x) × sin4x × 4/dx/dsin4x × 4/dx

Let 1 - cos4x = u and 4x = v

1 - cosv = u

limx→0 [d((cosu)/du × du/dv × dv/dx × sinv + cosu dsinv/dv × dv/dx]/du/dv × dv/dx =  limx→0 d((sinu)/du × sinv × 4 ×/sinv × 4

=  limx→0 -sinu × sinv × sinv × 4 + 16cosvcosu /cosv × 4 × 4

=  limx→0 [-4sin(1 - cos4x) × sin²4x + 16cos4xcos(1 - cos4x)]/16cos4x

=  [-4sin(1 - cos4(0)) × sin²4(0) + 16cos4(0)cos(1 - cos4(0))]/16cos4(0)

=  [-4sin(1 - cos(0)) × sin²(0) + 16cos(0)cos(1 - cos(0))]/16cos(0)

=  [-4sin(1 - 1)) × (0) + 16(1)cos(1 - 1)]/16cos(0)

=  [-4sin(0)) × (0) + 16(1)cos(0)]/4cos(0)

=  [-4(0) × (0) + 16(1)(1)]/16(1)

= (0 + 16)/16

= 16/16

= 1

So,  limx→0 ((sin( 1- cos4x))/(1 - cos4x)) = 1

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Step-by-step explanation:

To simplify the expression -6(4v - x - 5), we distribute the -6 to each term inside the parentheses:

-6(4v - x - 5) = -6(4v) - (-6x) - (-6)(5)

Simplifying each term:

-6(4v) = -24v

-(-6x) = 6x

-(-6)(5) = 30

Therefore,

-6(4v - x - 5) = -24v + 6x - 30

So the simplified expression is -24v + 6x - 30.

Answer: (-3,-2)

Step-by-step explanation:

 The image of the point (2,−3) under a clockwise rotation of 90° (R_90) about the origin can be found by swapping the x and y-coordinates and changing the sign of the new x-coordinate.

So, the new x-coordinate will be -3 and the new y-coordinate will be -2.

Therefore, the image of the point (2,−3) under a clockwise rotation of 90° (R_90) about the origin is (-3,-2).

the measurement of the fourth angle of the quadrilateral is 95 degrees.

To find the measurement of the fourth angle of a quadrilateral when the measures of three angles are given, we can use the fact that the sum of the measures of the angles in a quadrilateral is 360 degrees.

Let's denote the measure of the fourth angle as x. Then we can write an equation:

80 + 120 + 65 + x = 360

Simplifying this equation, we get:

x = 360 - 80 - 120 - 65 = 95

Therefore, the measurement of the fourth angle of the quadrilateral is 95 degrees.

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Answer:

Step-by-step explanation:

The perimeter is the distance around the edge of the shape.

    [tex]P=2+4+2+1+4+5=18cm[/tex]

Answer:

Step-by-step explanation:

the answer is 38ft^2