what is the standard deviation of data set
20 20 28 62 68 71 77 85 95 99

Answer:

26 < d < 30

Step-by-step explanation:

D is greater than 26 but less than 30.

Someone older than 26​, but less than 30 years of age will be written as 26 < x < 30.

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

A certain population demographic may be defined as someone older than 26​, but less than 30 years of age.

Let 'x' be the age of someone.

If the age of someone is greater than 26, then the inequality is written as,

26 < x            ...1

If the age of someone is smaller than 30, then the inequality is written as,

x < 30           ...2

Combine both inequalities, then we have

26 < x < 30

Someone older than 26​, but less than 30 years of age will be written as 26 < x < 30.

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The rate of change of y with respect to x for given function is -0.2

We know that, the slope of a function is nothing but the rate of change of y with respect to x of a function.

In this question, we have been given a linear function passing through points (-3, 3.6) and (5, 2)

We need to find the slope of the line passing through points (-3, 3.6) and  (5, 2)

Let m be the slope.

By using the formula of the slope,

m = (2 - 3.6) / (5 - (-3))

m = -1.6 / 8

m = -0.2

Therefore, the rate of change of y with respect to x for given function is -0.2

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Corresponding terms are those that appear in identical places in two similar situations.

Generate two numerical patterns given their rules. Understand that a term is a number in a pattern and corresponding terms are numbers in two patterns that show up in the same place in each pattern (e.g., the second term of each pattern are corresponding terms

.1) use the rule add 8 to find the cost of 6 t-shirts

 cost of 5 t-shirts to get the cost of 6 t-shirts.

the cost of 5 t-shirts plus $8 is $40+$8= $48

2) the second number is 4 times the first number.

one pattern starts at 0 and follows the rule add 2.

another pattern starts at 0 and follows the rule add5.

corresponding terms as ordered pairs

0,0

2,8

4,16

6,24

8.32

10,40

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According to the solving the angular speed of the wheel in radius per minutes would be:

100.

The correct option is 3.

angular velocity is the rate at which an item rotates or revolves around an axis, or the pace that the angular displacement among two bodies varies. This displacement is shown in the diagram by the angle formed by a line with one body and a line on the opposite body.

Angular velocity is defined as the rate of change of an object's position angle with respect to time, therefore w = theta / t, where w denotes angular velocity, theta denotes position angle, and t denotes time.

The angular speed of a rotating object is a scalar measurement. The angular velocity of a rotating object is measured as a vector. Only the magnitude of angular speed is specified. The magnitude and direction of angular velocity are specified.

Radius of the wheel = 2ft

velocity of the wheel = 200 ft/min

We know that the formula of Angular velocity:

ω = ν/r

ω = output

ν = liner velocity

r = path radius

Substituting the value in the formula:

ω = ν/r

ω = 200/2

= 100

According to the solving the angular speed of the wheel in radius per minutes would be:

100.

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Max is going to have more money than Shawn at the end of the seven weeks from the calculations

We would first have to define x to be the point where the money that they have would be equal

This is the week that is referred to as x

Sean would have $20 + $2x

Max would have $5x

When both amounts are equal, we would have sean = max

= $20 + $2x = $5x

Take like terms

20 = 5x - 2x

20 = 3x

divide through by 3

x = 20 / 3

= 6.6667

Remember

In 7 weeks sean = 20 + 2x 7 = 34

max = 5 x 7 = 75

Hence we can say that Max would have more money than Sean

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Using relations in a right triangle, the missing side lengths are given as follows:

1. D. [tex]x = 7\sqrt{2}, y = 7[/tex]

2. B. [tex]x = 3\sqrt{2}, y = 2[/tex].

3. C. x = 6, y = 3.

4. C. [tex]x = 2\sqrt{5}, y = \frac{2\sqrt{15}}{3}[/tex]

There are three relations in a right triangle, given as follows:

For the first triangle, we have that:

tan(45º) = 7/y

1 = 7/y

y = 7.

Applying the Pythagorean Theorem:

x² = 7² + 7²

x = sqrt(2 x 49)

[tex]x = 7\sqrt{2}[/tex]

Hence the correct option is:

D. [tex]x = 7\sqrt{2}, y = 7[/tex]

For the second triangle, we have that:

tan(45º) = y/3

1 = y/3

y = 3.

Applying the Pythagorean Theorem:

x² = 3² + 3²

x = sqrt(2 x 9)

[tex]x = 3\sqrt{2}[/tex]

Hence the correct option is:

B. [tex]x = 3\sqrt{2}, y = 2[/tex].

For the third triangle, we have that:

[tex]\tan{30^\circ} = \frac{y}{3\sqrt{3}}[/tex]

[tex]\frac{\sqrt{3}}{3} = \frac{y}{3\sqrt{3}}[/tex]

y = 3 x 3/3

y = 3.

Then:

[tex]\sin{30^\circ} = \frac{y}{x}[/tex]

0.5 = 3/x

x = 6.

Hence the correct option is:

C. x = 6, y = 3.

For the fourth triangle, we have that:

[tex]\sin{30^\circ} = \frac{y}{\frac{4\sqrt{15}}{3}}[/tex]

[tex]0.5 = \frac{y}{\frac{4\sqrt{15}}{3}}[/tex]

[tex]y = \frac{2\sqrt{15}}{3}[/tex]

[tex]\cos{30^\circ} = \frac{x}{\frac{4\sqrt{15}}{3}}[/tex]

[tex]\frac{\sqrt{3}}{{2}} = \frac{x}{\frac{4\sqrt{15}}{3}}[/tex]

[tex]x = 2\sqrt{5}[/tex]

Hence the correct option is:

C. [tex]x = 2\sqrt{5}, y = \frac{2\sqrt{15}}{3}[/tex]

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a. The slope of the line parallel to y = 3/4x - 1 is: 3/4.

b. The slope of the line perpendicular to  y = 3/4x - 1 is: -4/3.

If two lines are parallel to each other, they will have the same slope value. On the other hand, if the two lines are perpendicular to each other, they will have slopes that are negative reciprocals of each other.

Thus, given the equation, y = 3/4x - 1, the slope of this line is 3/4.

The negative reciprocal of 3/4 is -4/3.

Therefore, we can conclude that:

a. The slope of the line parallel to y = 3/4x - 1 is: 3/4.

b. The slope of the line perpendicular to  y = 3/4x - 1 is: -4/3.

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[tex]\textit{arc's length}\\\\ s = \cfrac{\theta \pi r}{180} ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=7\\ \theta =280 \end{cases}\implies s=\cfrac{(280)\pi (7)}{180}\implies s=\cfrac{98\pi }{9}\implies s\approx 34.21[/tex]

If 2XY = YZ then XY = 1/2YZ this is division property of equality.

Division property of equality, multiplication property of equality, subtraction property of equality and addition property of equality.

According to the given question we have to define each property that we used to solve or interpret if 2XY = YZ, then XY = 1/2YZ.

This is division property of equality.

2XY = YZ

Now if we divide both sides of the equality by 2 we'll get

XY = 1/2 YZ and we know diving by a same constant on both sides of the inequality doesn't change the equality relation.

If 2XY = YZ, then YZ = 12YZ is not the correct question,The correct question is If 2XY = YZ then XY = 1/2YZ.

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Answer:

1. 26, cuz 17+9=26

2. 50, cuz 60-10=50

3. 19, cuz 33-14=19

Hope these will help you as you can't just ask for answers.

[tex]\large \bf \implies{53.1 \degree}[/tex]

[tex] \bf \longrightarrow \: sin \: α = \frac{8}{10} = 0.8 \\ \\\bf \longrightarrow \: α = arc \: sin (0.8)= 53.1°[/tex]

The amount that the students should charge for the wristbands will be at least $1.40.

From the information, the students want to buy 500 wristbands for just $0.90 each and they want to make at least $250.

Therefore, the amount that they should charge for each will be:

Total cost = 500 × $0.90 = $450

Therefore, the amount charged be:

500x - 450 >= 250

Collect like terms

500x >= 250 + 450

500x >= 700

x >= 700/500

x>= $1.4

They should charge at least $1.40.

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Answer:

0> 1/2

Step-by-step explanation:

Answer:

x=37

Step-by-step explanation:

If you stare at the picture long enough you can tell that you have six straight angles, which add up to [tex]180\°\times 6 = 1080\°[/tex]. You now need to take away the internal angles, that add up to [tex]180\° \times 6-360\° = 720\°[/tex]*

What you have left is two expression of the same quantity - the sum of the external angles. In one case is [tex]360\°[/tex] (the difference between the two values) and in the other is the sum of the various expressions containing x.[tex]2x +(x+10)+(x+18)+3x+(x-1)+x = 360\\9x = 360 - 27 \rightarrow 9x = 333\rightarrow x=37[/tex]

*Pick any point inside the polygon, and join it to the corners. You will create as many triangles as you have sides - in our case 6. Sum of angles will be 180 times the number of sides, minus a whole round angle - the one in the center.

The number of infected people will reach 568 in approximately 4 weeks

Exponential equations are inverse of logarithmic equation and are represented by the equation below:

y = ab^x

where

a is the base value and x is the exponent

Given the equation that shows the number of infected people from an outbreak of the measles as:

y = 4(6)^t

If the number of infected people reach 568, hence;

568 = 4(6)^t

568/4 = 4(6)^t/4

6^t = 568/4

6^t = 142

Take the natural logarithm of both sides

ln(6^t) = ln142

t = ln142/ln6

t = 4.37

Hence the number of infected people will reach 568 in approximately 4 weeks

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The original number is represented by x So, the result is the multiplier of 2.

Quotients are the number that is obtained by dividing one number by another number.

Dividend ÷ Divisor = Quotients

It is given that Multiply the number 4. Add 6 to the product. Divide this sum by 2. Subtract 3 from the quotient.

Let x = original number

(4x + 6)/2 - 2

= (4x /2 + 6/2) - 2

= 2x + 3 -2

= 2x+1

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The complete question is;

Write a conjecture that relates the result of the process to the original number selected. Represent the original number as x. What is the result?

Alex has received a rate of return of 0.25, or 25%, on his investment.

What is Algebraic expression ?

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

To calculate the rate of return that Alex has received, we can use the formula:

rate of return = (final value - initial value) / initial value

where the final value is the value of the investment after the period of time in question, and the initial value is the value of the investment at the beginning of that period.

In this case, the final value is $1,250 and the initial value is $1,000, so we have:

rate of return = (1250 - 1000) / 1000 = 0.25

Therefore, Alex has received a rate of return of 0.25, or 25%, on his investment.

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Interval of convergence of the power series [tex]\frac{(x+3)^{n} }{n}[/tex] ; n = 1 is -5 < x < -1.

A power series is a special type of infinite series representing a mathematical function in the form of an infinite series that either converges or diverges.

The series is aₙ =  [tex]\frac{(x+3)^{n} }{n}[/tex]

To generate aₙ₊₁ term replace 'n' with 'n + 1'

aₙ₊₁ =  [tex]\frac{(x+3)^{n+1} }{n+1}[/tex]

Now plugging aₙ and aₙ₊₁ in the formula L = [tex]\lim_{n \to \infty} |\frac{an+1}{an}|[/tex]

L = [tex]\lim_{n \to \infty} |\frac{\frac{(x+3)^{n+1} }{n+1} }{\frac{(x+3)^{n} }{n} }|[/tex]

L = [tex]\lim_{n \to \infty} |{\frac{(x+3)^{n+1} }{n+1} }/{\frac{(x+3)^{n} }{n} }|[/tex]

L = [tex]\lim_{n \to \infty} |{\frac{(x+3)^{n+1} }{n+1} }*{\frac{n }{(x+3)^{n} }|[/tex]

L = [tex]\lim_{n \to \infty} |{\frac{(x+3) }{n+1} }*{n}|[/tex]

L = [tex](x+3)\lim_{n \to \infty} |{\frac{n}{n+1} }|[/tex]

L = [tex](x+3)\lim_{n \to \infty} |{\frac{n*(\frac{1}{n}) }{(n+1)*(\frac{1}{n}) } }|[/tex]

Since n = 1

L = [tex](x+3)\lim_{n \to \infty} |\frac{1}{1+1} |[/tex]

L = [tex](x+3)\lim_{n \to \infty} |\frac{1}{2} |[/tex]

L = [tex]\frac{1}{2} * |x+3|[/tex]

The ratio tells us that if L < 1 then the series will converge

[tex]\frac{1}{2}*(x+3) < 1[/tex]

[tex](x+3) < 2[/tex]

The interval of convergence will be

-2 < (x + 3) < 2

-5 < x < -1

The interval of convergence for the power series  [tex]\frac{(x+3)^{n} }{n}[/tex] is -5 < x < -1

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Answer:

  12

Step-by-step explanation:

Given a table of supply and demand at each price point, you are asked for the equilibrium price if the demand numbers are decreased by 0.5 million.

The equilibrium price is the price at which the quantity demanded is equal to the quantity supplied.

For the given table, we see that a price of $14 thousands will result in both demand and supply being 2.00 millions per year. That is the equilibrium price before any adjustment to the table is made.

The problem statement is telling you to use a table that has all of the demand values decreased by 0.5 million. That makes the demand column read ...

  2.25, 2.00, 1.75, 1.50, 1.25, 1.00, 0.75

This new column of reduced demand values matches the numbers in the supply column when they are both 1.75 million per year. That match occurs on the line with price $12 thousand.

The new equilibrium price is $12 thousand.

Answer:

Step-by-step explanation:

Complete Question: You are building a shelf that fits in a corner in the figure the entire shelf is XYZ each unit in the coordinate plane represents one inch find the area of the shelf.

Answer:

112.5 units²

Step-by-step explanation:

Area of the shelf = ½*base*height.

The base is the distance between Z(0, 5) and Y(15, 5)

The height is the distance between X(15, 20) and Y(15, 5).

Therefore area of the shelf = ½*ZY*XY

Use the distance formula to find ZY and XY.

Distance between Z(0, 5) and Y(15, 5):

Let,

Distance between X(15, 20) and Y(15, 5):

Let,

Area of shelf = ½*15*15 = ½*225 = 112.5 units²

The area of park in terms of scale drawing is 79200 square yards with scale drawing of a rectangular park is 8 inches wide and 11 inches long.

Area of rectangle=Length * width.

Given:

scale length of rectangular park = 11 inch =

scale width of rectangular park = 8 inch

scale length / actual length of park = scale width/ actual width of park

11/330= 8/ actual width of park

1/30 =  8/ actual width of park

actual width of park = 240

So,

Area = length* width

=330*240

= 79200 square yards

Hence, the area of the actual parking is 79200 square yards.

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Answer:

14.

Step-by-step explanation:

1) if mr. Oliveros spent 10$ for his ticket, then the rest sum of his money is 45-10=35$;

2) according to the condition mr. Oliveros spends 35$ for unknown number tickets for students, where 2.5$ for each student. Using this conditiion it is possible to calculate the number of student tickets:

35/2.5=14.

Answer:

2(s+20)

Step-by-step explanation:

hope this helps

Answer: son is 10 years old and father is 40 years old

Step-by-step explanation:

Let the present age of son is x years

Then the present age of father is 4x years

4x+20=2(x+20)

4x+20=2x+40

4x+20-20=2x+40-20

4x=2x+20

4x-2x=2x+20-2x

2x=20

Divide both parts of the equation by 2:

x=10 years

4x=4(10)

4x=40 years

Let [tex]2n+1[/tex] be the smallest of these integers, so the next two are [tex]2n+3[/tex] and [tex]2n+5[/tex]. The sum of their squares is 83, so

[tex](2n+1)^2 + (2n+3)^2 + (2n+4)^2 = 83[/tex]

Let [tex]x=2n+3[/tex] be the middle number. By substitution, we rewrite the equation as

[tex](x-2)^2 + x^2 + (x+2)^2 = 83[/tex]

Solve for [tex]x[/tex]. Expand the left side.

[tex](x^2 - 4x + 4) + x^2 + (x^2 + 4x + 4) = 83[/tex]

[tex]3x^2 + 8 = 83[/tex]

[tex]3x^2 = 75[/tex]

[tex]x^2 = 25[/tex]

[tex]\implies \boxed{x=\pm5}[/tex]

The answer include the following:

Step 1: 7x + 21 = 9x - 4x + 37 - distributive property.

Step 2: 7x+ 21 - 21 = 9x - 4x +37 - 21 - subtraction property

Step 3: 7x = 5x +16 - combine like terms.

Step 4: 7x - 5x = 5x - 5x +16 - subtraction property.

Step 5: 2x = 16 - combine like terms

Step 6: 2x ÷ 2 = 16 ÷ 2 - division property.

Step 7: x = 54 - simplification.

This is referred to as process in which a mathematical expression is replaced by another so as to ensure that it is simpler and shorter in other solve the problem and for better understanding.

In the case of 7(x + 3) = 9x - 4x − 35, distributive property is used to expand the bracket and collecting of like terms are also used for easier subtraction and addition process

This employs the use of different arithmetic operations such as division, etc and the steps above shoes the most appropriate justifications in this type of scenario.

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Bill Murray has 16 3/4 days in total of vacation per year.  Bill entitled to  8 1/6 days more vacation time.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Bill Murray has 16 3/4 days in total.

(16×4 + 3)/4 = 67/4 days.

Then;

1 3/4 = (1×4 + 3)/4 = 7/4 days

4 2/3 = (4×3 + 2)/3 = 14/3 days

2 1/6 = (2×6 + 1) = 13/6 days

To add and then subtract them directly, we need to bring all fractions to the same denominator.

we have to multiply each fraction by a fitting n/n factor to bring the denominators to 12

67/4 = 67/4 × 3/3 = 201/12

7/4 = 7/4 × 3/3 = 21/12

14/3 = 14/3 × 4/4 = 56/12

13/6 = 13/6 × 2/2 = 26/12

Thus the remaining vacation time will be

201/12 - 21/12 - 56/12 - 26/12 = 98/12 = 49/6

49/6 = 8 and remainder 1 = (8×6 + 1)/6 = 8 1/6 days

Hence, Bill Murray has 16 3/4 days in total of vacation per year.  Bill entitled to  8 1/6 days more vacation time.

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Answer

Two times a number plus seven

Step-by-step explanation:

Hope this helps!!!

The inequality is 30 + 7.5v ≤ 135

The number of visits Emma could make to earn her first free movie ticket is 14

From the question, we are to write and solve an inequality which can be used to determine the number of visits Emma can make to earn her first fee movie ticket

From the given information,

"She receives 30 rewards points just for signing up"

and

"She earns 7.5 points for each visit to the movie theater"

If she visits the movie theater v number of times,

Then,

She would earn

30 + 7.5v points

Also,

She needs at least 135 points for a free movie ticket.

Thus,

The inequality that could be used to determine the number of visits, v, to earn a free movies ticket is

30 + 7.5v ≤ 135

Solving the inequality

30 + 7.5v ≤ 135

Subtract 30 from both sides

30 - 30 + 7.5v ≤ 135 - 30

7.5v ≤ 105

v ≤ 105/7.5

v ≤ 14

Hence, the number of visits Emma could make to earn her first free movie ticket is 14

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It should be noted that the value of t in the equation 2t = 80, t will be 40.

It should be noted that an equation is simony used to show the relationship between the variables or numbers that are given.

Therefore, it should be noted that solving the equation will be:

2t = 80

Divide through by 2

2t / 2 = 80 / 2

t = 40

Therefore, the value of t is 40.

Therefore, it should be noted that the value of t on the equation 2t = 80, t will be 40.

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