The quality control manager at a computer manufacturing company believes that the mean life of a computer is 84
months, with a variance of 100
.

If he is correct, what is the probability that the mean of a sample of 99
computers would differ from the population mean by less than 2.5
months? Round your answer to four decimal places.

Answers

Answer 1

SEE ATTACHED SOLUTION


Related Questions

Find the value of x

Answers

Answer:

x = 20

Step-by-step explanation:

We know that the vertically opposite angles are equal.

Accordingly,

41 = 2x + 1

Subtract 1 from both sides.

41 - 1 = 2x

40 = 2x

Divide both sides by 2.

x = 20

Show that cos θ/2 (1-cosθ) = sin θ/2 sinθ

can anyone write the steps please? many Thanks! ​

Answers

Answer:

[tex]\cos \dfrac{\theta}{2}(1-\cos \theta)=\sin \dfrac{\theta}{2} \sin \theta[/tex]

Step-by-step explanation:

[tex]\textsf{To show that}\;\;\cos \dfrac{\theta}{2}(1-\cos \theta)=\sin \dfrac{\theta}{2} \sin \theta:[/tex]

[tex]\textsf{Let}\;\;u=\dfrac{\theta}{2} \implies 2u=\theta[/tex]

Therefore:

[tex]\implies \cos \dfrac{\theta}{2}(1-\cos \theta)=\cos u(1-\cos 2u)[/tex]

Cosine Double Angle Identities

 cos(A±B) = cosA cosB ∓ sinA sinB

 cos(2θ) = cos²θ - sin²θ

 cos(2θ) = 2cos²θ - 1

 cos(2θ) = 1 - 2sin²θ

Use the cos double angle identity cos(2θ) = 1 - 2sin²θ to rewrite cos(2u) in terms of sin:

[tex]\begin{aligned}\implies \cos \dfrac{\theta}{2}(1-\cos \theta)&=\cos u(1-\cos 2u)\\&=\cos u(1-(1-2 \sin^2 u))\end{aligned}[/tex]

Simplify:

[tex]\begin{aligned}\implies \cos \dfrac{\theta}{2}(1- \cos \theta)&=\cos u(1- \cos 2u)\\&=\cos u(1-(1-2 \sin^2 u))\\&=\cos u(1-1+2 \sin^2 u)\\&= \cos u(2 \sin^2 u)\\&=2 \sin u \cos u \sin u\end{aligned}[/tex]

Sine Double Angle Identities

 sin(A±B) = sinAcosB ± cosAsinB

 sin(2θ) = 2sinθcosθ

Using the sine double angle identity to rewrite 2sin(u)cos(u) as sin(2u):

[tex]\begin{aligned}\implies \cos \dfrac{\theta}{2}(1-\cos \theta)&=\cos u(1- \cos 2u)\\&=\cos u(1-(1-2 \sin^2 u))\\&= \cos u(1-1+2 \sin^2 u)\\&= \cos u(2 \sin^2 u)\\&=2 \sin u \cos u \sin u\\&= \sin(2u) \sin u\end{aligned}[/tex]

Finally, substitute u = θ/2 back in:

[tex]\begin{aligned}\implies \cos \dfrac{\theta}{2}(1-\cos \theta)&=\cos u(1-\cos 2u)\\&=\cos u(1-(1-2 \sin^2 u))\\&=\cos u(1-1+2 \sin^2 u)\\&= \cos u(2\sin^2 u)\\&=2\sin u\cos u \sin u\\&=\sin(2u) \sin u\\&=\sin\left(2 \cdot \dfrac{\theta}{2}\right) \sin \dfrac{\theta}{2}\\&=\sin \theta \sin \dfrac{\theta}{2}\\&=\sin \dfrac{\theta}{2} \sin \theta \end{aligned}[/tex]

If you don't want to substitute u = θ/2, the full calculation using the same double angle identities is:

[tex]\begin{aligned}\implies\cos\dfrac{\theta}{2}(1-\cos\theta)&=\cos\dfrac{\theta}{2}\left(1-\left(1-2\sin^2\dfrac{\theta}{2}\right)\right)\\\\&=\cos\dfrac{\theta}{2}\left(1-1+2\sin^2\dfrac{\theta}{2}\right)\\\\&=\cos\dfrac{\theta}{2}\left(2\sin^2\dfrac{\theta}{2}\right)\\\\&=2\sin \dfrac{\theta}{2}\cos \dfrac{\theta}{2} \sin \dfrac{\theta}{2}\\\\&=\sin\left(2\cdot\dfrac{\theta}{2}\right)\sin\dfrac{\theta}{2}\\\\&=\sin\theta\sin\dfrac{\theta}{2}\\\\&=\sin\dfrac{\theta}{2}\sin\theta \end{aligned}[/tex]

Review the graph of function f(x). On a coordinate plane, a graph approaches x = negative 3 in quadrant 2, has inflection point (negative 1, 0) and approaches x = 1 in quadrant 4. A graph approaches x = 1 in quadrant 1, and curves down and approaches the x-axis in quadrant 1. Which statement describes Limit of f (x) as x approaches 1?

Answers

The correct statement regarding the limit of f(x) as x -> 1 is given as follows:

lim x -> 1 f(x) = -∞.

How to calculate the lateral limits?

To obtain lateral limits, we need to take the limit of a function as it approaches a point from the left-hand side and the right-hand side separately.

If the two limits are equal, then this is the limit of the function, while if the lateral limits are different, then the limit of the function does not exist for the value of x.

From quadrant 2, the function approaches x = 1 on quadrant 4, hence the limit to the left is given as follows:

lim x -> 1^- f(x) = -∞.

A graph approaches x = 1 in quadrant 1, and curves down and approaches the x-axis in quadrant 1, hence the limit to the right is given as follows:

lim x -> 1^+ f(x) = -∞.

As the lateral limits are equal, the limit of the function is given as follows:

lim x -> 1 f(x) = -∞.

Missing Information

The problem describes the graph of the function.

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Find the time it takes for $930,000 to double when invested at an annual interest rate of 20%, compounded continuously.

Answers

Using Algebraic expression,  It will take approximately 3.47 years for an investment of $930,000 to double at an annual interest rate of 20%, compounded continuously.

What is Algebraic expression ?

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

The formula for continuous compound interest is given by:

[tex]A = Pe^{(rt)}[/tex]

where A is the amount after time t, P is the initial principal, r is the annual interest rate (as a decimal), and e is the constant 2.71828... (also known as Euler's number).

To find the time it takes for an investment to double at a 20% annual interest rate, we need to solve for t in the equation:

[tex]2P = Pe^{(rt)}[/tex]

Dividing both sides by P, we get:

[tex]2 = e^{(rt)}[/tex]

Taking the natural logarithm of both sides, we get:

[tex]ln(2) = rt ln(e)[/tex]

Since ln(e) = 1, we can simplify to:

ln(2) = rt

Solving for t, we get:

[tex]t = ln(2) / r[/tex]

Substituting P = $930,000 and r = 0.20, we get:

[tex]t = ln(2) / 0.20t = 3.47 years[/tex]

Therefore, it will take approximately 3.47 years for an investment of $930,000 to double at an annual interest rate of 20%, compounded continuously.

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What is a good book?

Answers

A good book is one that makes the reader feel. It takes the reader on a compelling journey. .

What is book?

A book is a medium for recording information in the form of writing or images, typically composed of many pages bound together and protected by a cover

Given is to understand what are the characteristics of good book.

A good book is one that makes the reader feel. It takes the reader on a compelling journey.

Calling a book “good” is an opinion that can be applied to any book.

Therefore, a good book is one that makes the reader feel. It takes the reader on a compelling journey.

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Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 1, 2−√3

Answers

The polynomial function is  [tex]f(x) = x^3+(\sqrt3-3)x^2+(2-3\sqrt3)x+2\sqrt3[/tex].

What is standard polynomial function?

The standard polynomial is given by:

f(x) = a(x-p)(x-q)(x-r) ...

Where a is the leading coefficient and p and q are the zeros.

Here We are given that the zeros are x = 1,2,and −√3.

Now leading Coefficient a = 1, p=1 , q=2 and r=−√3

Then the function is,

=> f(x) = 1(x-1)(x-2)(x-(−√3))

=> f(x)=(x-1)(x-2)(x+√3)

=> f(x)=[tex](x^2-2x-x+2)(x+\sqrt3)[/tex]

=> [tex]f(x)=x^2-3x+2(x+\sqrt3)[/tex]

=>[tex]f(x)=x^3+\sqrt3 x^2-3x^2-3\sqrt3 x+2x+2\sqrt3[/tex]

=> [tex]f(x) = x^3+(\sqrt3-3)x^2+(2-3\sqrt3)x+2\sqrt3[/tex]

Hence the polynomial function is [tex]f(x) = x^3+(\sqrt3-3)x^2+(2-3\sqrt3)x+2\sqrt3[/tex].

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i broke my arm and fell behind if someone can help me solve these worksheets to help get me back on track understanding my math, you don't have to do all of them but if you did that would be amazing. Please and thankyou.

Answers

yes so basically the math you’ll be needing to do is

find the area that is NOT shaded

Answers

Answer:

376.8

Step-by-step explanation:

Area of circle: A = πr^2 = π12^2 = 144π

Area of shade: A = (θ/360º) x πr^2 = (60/360) x 144π = 24π

Area not shaded = 144π - 24π = 120π = 120(3.14) = 376.8

Suppose C(t) is the cost, in thousands of dollars, of producing t tons of white paper. If
C'(10) = 380,
estimate the cost of producing an additional 500 lb of paper once 10 tons have been produced.

Answers

It is estimated that producing an additional 500 lb of paper once 10 tons have been produced would cost approximately $95,000.

What is Algebraic expression ?

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

To estimate the cost of producing an additional 500 lb of paper, we need to first convert 500 lb to tons.

1 lb = 0.0005 tons

So, 500 lb = 0.25 tons

Now, we can use the marginal cost formula:

MC = C'(t)

where MC is the marginal cost and C'(t) is the derivative of the cost function with respect to t.

We are given that C'(10) = 380, which means that the marginal cost of producing the 10th ton of paper is $380,000.

To estimate the cost of producing an additional 500 lb of paper once 10 tons have been produced, we need to find the marginal cost at t = 10.

Therefore, the estimated cost of producing an additional 500 lb of paper is:

MC(10) ≈ C'(10) ≈ $380,000 per ton

0.25 tons x $380,000 per ton = $95,000

Hence, it is estimated that producing an additional 500 lb of paper once 10 tons have been produced would cost approximately $95,000.

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On which interval is the function increasing and linear?

Answers

The interval which is function increasing and decreasing is  

A) x = -3.5 and x = -1.5.

What is function?

A mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable). In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.

Here we know that The slope determines if the function is an increasing linear function, a decreasing linear function, or a constant function. f(x)=mx+b is an increasing function if m>0. f(x)=mx+b is an decreasing function if m<0

Then according to the graph ,

The highest point = x=-3.5

The lowest point = x=-1.5

Then the interval which is function increasing and decreasing is  

A) x = -3.5 and x = -1.5.

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Please help me with this question

Answers

The graph of the function is added as an attachment

How to determine the graph of the function

From the question, we have the following parameters that can be used in our computation:

g(x) = 6, -7 < x ≤ -2

          2, -2 < x ≤ 3

          -2, 3 < x ≤ 8

The above is a piecewise function that has three linear functions, and three domains

Using the above as a guide, we have the following:

We plot each function in each domain

See attachment for the graph of the function

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So confused on the last question! Could somebody help me? :)

Answers

PEDMAS order

1•(-2)-6

Remove parentheses

-2-6

Solution

-8

The perimeter of a rectangular fence is to be at least 82 feet and no more than 124 feet. If the width of the fence is 14 ​feet, what is the range of values for the length of the​ fence?

Answers

The range of values for length when the perimeter is between 82 feet and 124 feet is: 27 ≤ l ≤ 48

What is meant by perimeter?

A closed path that covers, encircles, or outlines a one-dimensional length or a two-dimensional shape is called a perimeter. The area encircling a two-dimensional figure is known as its perimeter. Whether it is a triangle, square, rectangle, or circle, it specifies the length of the shape. The two primary characteristics of a 2D shape are area and perimeter. The perimeter of the shape can be calculated by summing the measurements of its sides and edges. A rectangle's perimeter is equal to twice the product of its length and width.

Given a rectangular fence.

The perimeter P is at least 82 feet and is no more than 124 feet.

82 ≤ P ≤ 124

The width is 14 feet.

The range of values of the length is to be found.

Now,

Perimeter of rectangle = 2( length + width)

The lowest value of the perimeter is 82

82 = 2(l + 14)

82 = 2l + 28

54 = 2l

l = 27

The highest value of perimeter is 124

124 = 2(l + 14)

124 = 2l +28

96 = 2l

l = 48

Therefore the range of values for length when the perimeter is between 82 feet and 124 feet is:

                  27 ≤ l ≤ 48

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A decimal to the hundredths place is greater than 5.58 and less than 5.88.The digit in the tenths place is odd, and the digit in the hundredths place is even. What are all the possible decimals?

Answers

The pοssible decimals that satisfy the given cοnditiοns are:5.20, 5.22, 5.24, 5.26, 5.28, 5.60, 5.62, 5.64, 5.66, 5.68, 7.20, 7.22, 7.24, 7.26, 7.28, 7.60, 7.62, 7.64, 7.66, 7.68

What are decimals?

Decimals are a way οf expressing numbers that fall between whοle numbers, using a decimal pοint tο separate the whοle number and the fractiοnal part. Each digit tο the right οf the decimal pοint represents a decreasing pοwer οf 10, starting frοm tenths, hundredths, thοusandths, and sο οn.

Since the digit in the tenths place is οdd, it can οnly be 5 οr 7. Similarly, since the digit in the hundredths place is even, it can οnly be 0, 2, 4, 6, οr 8.

Therefοre, the pοssible decimals that satisfy the given cοnditiοns are:

5.20

5.22

5.24

5.26

5.28

5.60

5.62

5.64

5.66

5.68

7.20

7.22

7.24

7.26

7.28

7.60

7.62

7.64

7.66

7.68

Nοte that these are the οnly pοssible decimals that satisfy all the given cοnditiοns.

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If x= 3 and y = 4, find the value of: x + y
J


Please answer ASAP

Answers

x= 3 and y = 4

so :

x + y = 3 + 4 = 7

Answer : 7

Thabo is x years old and Lizzie is y years old. Write down algebraic expression for: Thabo's age in 6 year's time

Answers

The algebraic expression for Thabo is, Thabo's age in 6 years' time is x + 6.

What are the types of algebraic expression?

There are three primary categories of algebraic expressions, including:

Numeral Expression. Binary Expression. Expression of a Polynomial

Monomial Expression: A monomial is an algebraic expression that only has one term.

Monomial expressions include 3x4, 3xy, 3x, 8y, etc. as examples.

A binomial expression is an algebraic expression with two terms that are opposite each other.

Binomial examples are 5xy + 8; xyz + x3; etc.

Polynomial Expression: In general, a polynomial expression is one that has several terms with non-negative integral exponents of a variable.

Given that, Thabo is x years old and Lizzie is y years old.

In 6 years, Thabo's age will be:

x + 6

Hence, Thabo's age in 6 years' time is x + 6.

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Alaina paid $8.65 for 5 pounds of nectarines. At this rate, how much would 13 nectarines cost?

Answers

Answer:

$22.49

Step-by-step explanation:

5 pounds of nectarines costs $8.65

8.65/5 = 1.73

1 pound of nectarines costs $1.73

1.73 times 13 = 22.49

Answer:2249/100

Step-by-step explanation:

13 x 8.65/5

calculate : 13 x 8.65/5

2249/100

What is double fifteen point 5

Answers

Answer: 31

Step-by-step explanation:

Please I need help. I don’t understand this. It keeps saying I’m getting the answer wrong but I don’t know what I am doing wrong.

Answers

Step-by-step explanation:

This figure is made up of a cone and a semi sphere. Let's find the area of the cone

Volume of a cone

[tex] \frac{1}{3} \pi {r}^{2} h[/tex]

The height is 34 cm.

The radius is half the diameter of the sphere ,

this the radius is 14

[tex] \frac{1}{3} \pi( {14}^{2} )(34)[/tex]

Hint: Do not round mid calculations, only when you are done.

Volume of the semi sphere is

[tex] \frac{1}{2} ( \frac{4}{3} \pi {r}^{3} )[/tex]

The radius is 14

[tex] \frac{1}{2} ( \frac{4}{3} \pi(14) {}^{3} )[/tex]

Add both areas

[tex] \frac{1}{3} \pi( {14}^{2} )(34) + \frac{2}{3} \pi(14) {}^{3} [/tex]

Use 3.14 for pi

Which gives us

12719 to the nearest whole number

Find the equivalent expression using the
same bases.
1080
Clear all
(21.15)⁹
Enter the correct answer.
000
DONE

Answers

(21)⁹ . (15)⁹ is the equivalent expression using the same bases.

What are power and exponent?

One can represent extremely big or extremely small numbers in a more straightforward fashion by using exponents and powers. For instance, we can write 3 x 3 x 3 x 3 as 34, where 4 is the exponent and 3 is the base, to demonstrate 3 x 3 x 3 x 3 in a straightforward manner.

                            It is claimed that the entire statement 34 possesses power. How many times you should multiply a number depends on its power. Other names for powers include exponents and indices.

using (a.b )ⁿ = (a)ⁿ . (b)ⁿ

 ( 21.15)⁹ = (21)⁹ . (15)⁹

             

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Given that the polynomial [tex]f(x)[/tex] has 9 turning points, which of the following most accurately describes the degree of [tex]f(x)[/tex]?


A. The degree of F(x) is at most 10.

B. The degree of F(x) is at most 8.

C. The degree of F(x) is at least 10.

D. The degree of F(x) is at most 9.

E. The degree of F(x) is at least 9.

F. The degree of F(x) is at least 8.

Answers

The correct option is - D. The degree of F(x) is at most 9, shows the largest number of turning points of polynomial function.

Explain about the polynomial functions?

Several kinds of polynomial functions exist. They include linear, quadratic, cubic, among many other types.

The idea of turning points, or the points at which a graph shifts from increasing towards decreasing or vice versa, is also present.The quantity of turning points in every polynomial equation is always fewer than or equal to that same degree of the polynomial.The number of rotations is often one smaller than a polynomial's degree.

A polynomial function with degree n is provided to us.

The largest number of turning points is what we're looking for.

The most turning points a polynomial function can have are:

n - 1

Thus, the degree of F(x) is at most 9.

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i need the answers asap, please help me.

Answers

The polynomial expressions when simplified are 2g² + 3g - 1, 24c⁵d - 8cd² + 12c³d³ + 4cd, (m² + 5m + 4) ÷ (m + 1) = m + 4.

Others are added below

Simplifying the polynomial expressions

Expression 1

The expression is given as

(14g³ + 21g² - 7g)/7g

Divide the numerator by the denominator

So, we have

2g² + 3g - 1

Expression 2

Here, we have

24c⁵d - 8cd² + 12c³d³ + 4cd

The expression is in its simplified state

Simplifying by long divison

Expression 3

Given that

(m² + 5m + 4) ÷ (m + 1)

By long division, we have

           m + 4

m + 1 | m² + 5m + 4

           m² + m

-------------------------------------

              4m + 4

              4m + 4

-------------------------------------

                0

This means that (m² + 5m + 4) ÷ (m + 1) = m + 4

Expression 4

Given that

(c² - 2c - 15)(c + 3)⁻¹

By long division, we have

           c - 5

c + 3 | c² - 2c - 15

          c² + 3c

-------------------------------------

              -5c - 15

              -5c - 15

-------------------------------------

                0

This means that (c² - 2c - 15)(c + 3)⁻¹ = c - 5

Simplifying by synthetic division

Expression 5

Here, we have

(2y² + 10y + 17) ÷ (y + 3)

By synthetic division, we have

   

-3 | 2  10  17

    |__-6_-12______

      2  4   5

This means that (2y² + 10y + 17) ÷ (y + 3) = 2y + 4 + 5/(y + 3)

Expression 6

Here, we have

(2p³ - p² - 10p + 8)(p - 2)⁻¹

By synthetic division, we have

   

2 | 2    -1   -10    8

    |___4__6__-8____

      2    3   -4     0

This means that (2p³ - p² - 10p + 8)(p - 2)⁻¹ = 2p² + 2p - 4

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Malik plans to make changes to his yard. He wants to double the lengths of the sides
of the garden, using the right angle vertex as the center of dilation. His garden will
then be rotated 180° about the right angle vertex and moved 11 feet to the right and
13 feet up.

Answers

Answer:

48.2 degrees

Step-by-step explanation:

look at photo

Neo leaves home at 6:45 to drive to work. Neo drives a distance of 45 miles.Neo thinks he drives of an average speed of 30 miles per hour.

Neo is correct what time would he arrive at work ?

Answers

The time at which Neo reaches the work destination is A = 8 : 15 AM

What do you mean by an Equation?

Equations are statements in mathematics that have two algebraic expressions on either side of the equals (=) sign.

It displays the similarity of the connections between the phrases on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are examples of the parts of an equation. When creating an equation, the "=" symbol and terms on both sides are necessary.

Given data ,

Let the time at which Neo reaches the work destination be A

Now , the time at which Neo leaves home = 6 : 45 AM

And , the distance between Neo and work = 45 miles

where the speed of Neo is S = 30 miles per hour

So , the distance traveled by Neo in 1 hour = 30 miles

The distance traveled by Neo in 1.5 hours = 45 miles

Therefore , the time required by Neo to reach office is 1.5 hours

And , the time at which Neo reaches the work destination A = 6 : 45 AM + 1.5 hours

On simplifying the equation , we get

The time at which Neo reaches the work destination A = 8 : 15 AM

Hence , the equation is A = 8 : 15 AM

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The two figures below are similar figures.



Which proportion must be true?

Select two correct answers.

Answers

The proportion is (y/x) = (26/20).

What are Similar Triangles?

Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

As per the given data:

Two figures below are similar figures.

All sides are given in the diagram.

If any two triangles are similar, then their corresponding sides are in the same proportion.

∴ (2.5 / x) = (1 / 1.5) = (3.25 / y)

= (5/2x) = (2/3) = (13/4y)

From cross-multiplication, we can find:

(y/x) = (26/20)

Hence, the proportion is (y/x) = (26/20).

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A dosage requires a patient to receive 58.3 mg of medicine for every 9 kg of body weight for every 4 hours. How many grams of medication does a patient, who weights 63 kg, need in 12 hours?​

Answers

Based on proportional multiplication, the quantity of medication in grams that the patient, who weighs 63 kg needs in 12 hours is 1,224.3 mg.

What is proportional multiplication?

Proportional multiplication involves the cross-multiplication of two fractional ratios, which are equated to each other.

Proportions involve the equation of two ratios.

The dosage required by a patient in 4 hours with a weight of 9 kg = 58.3 mg

Proportionately, the dosage required by a patient in 12 hours with a weight of 63 kg = 1,224.3 mg (58.3 x 63/9 x 12/4).

Thus, if a patient weighing 9 kg receives 58.3 mg of medicine in 4 hours, proportionately, in 12 hours, a patient weighing 63 kg will receive 1,224.3 mg.

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Need answers please.

Answers

The answers to each part context to similar triangles is given above.

What is proportional relationship?

A proportional relationship between two variables {x} and {y} means that if {x} increases, then {y} increases with it proportionally.

Given are two similar triangles as shown in the image.

{ 1 } -

We can write the scale factor as -

{k} = ZX/AC

{k} = 39/13

{k} = 3

{ 2 } -

m∠X = m∠A = 67°

m∠X = 67°

{ 3 } -

ZW/CD = k

CD = ZW/k

CD = 36/3

CD = 12 units

{ 4 } -

Area of triangle ABC = 1/2 x 5 x 12 = 30 square units.

A{ΔABC} = 30 square units

{5} -

Ratio of area of triangle ABC to triangle XYZ = (30)/(15 x 36) = 1/18

A{ΔABC}/A{ΔXYZ} = 1/18

Therefore, the answers to each part context to similar triangles is given above.

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A men's traditional haircut at The Barber Spot costs $25 and a shave costs $30. There is an 8.25% state sales tax. What is the total price that Shai must pay if he gets his hair cut and beard shaved and he tips the barber 25%?

$68.75

$73.29

$74.42

$88.25

Answers

The cost of Shai's haircut is $25 and the cost of his shave is $30, so the subtotal before tax and tip is:

$25 + $30 = $55

The sales tax is 8.25%, so the tax amount is:

$55 * 0.0825 = $4.54

The total cost before tip is:

$55 + $4.54 = $59.54

If Shai tips 25% on the subtotal, the tip amount is:

$55 * 0.25 = $13.75

So the total cost including tax and tip is:

$59.54 + $13.75 = $73.29

Therefore, Shai must pay a total of $73.29 if he gets his hair cut and beard shaved and he tips the barber 25%. The answer is option (B).

2 in a half because the people told me that was it and so yeah

Suppose that a technology task force is being formed to study technology awareness among instructors. Assume that 12 people will be randomly chosen to be on the committee from a group of 30 volunteers, 21 who are technically proficient and 9 who are not. We are interested in the number on the committee who are not technically proficient.

c)How many instructors do you expect on the committee who are not technically proficient? (Round your answer to the nearest whole number.)

(d)Find the probability that at least 3 on the committee are not technically proficient. (Round your answer to four decimal places.)

(e)Find the probability that at most 4 on the committee are not technically proficient. (Round your answer to four decimal places.)

Answers

The prοbability that nο mοre than fοur cοmmittee members are technοlοgically adept is 0.9851, rοunded tο fοur decimal places.

c) By dividing the tοtal number οf applicants whο are nοt technically prοficient (9) by the likelihοοd that any οne οf them wοuld be selected fοr the cοmmittee, it is pοssible tο calculate the anticipated number οf instructοrs οn the cοmmittee whο are nοt technically prοficient:

Number anticipated: 9 * (12/30) = 3.6

Tο the nearest whοle number, we estimate that there will be fοur prοfessοrs οn the cοmmittee whο lack technical prοficiency.

d) We can use the binοmial distributiοn with n=12 (the number οf trials) and p=0.3 tο determine the likelihοοd that at least three members οf the cοmmittee lack technical prοficiency (prοbability οf success, which is defined as selecting a vοlunteer whο is nοt technically prοficient). When X is the number οf technically incοmpetent prοfessοrs οn the cοmmittee, we want tο determine P(X>=3).

P(X>=3) = 1 - P(X<3)

= 1 - P(X=0) - P(X=1) - P(X=2)

[tex]\mathrm{=1 - (12\ choose\ 0)(0.3^0)(0.7^{12}) - (12\ choose\ 1)(0.3^{1})(0.7^{11}) - (12\ choose\ 2)(0.3^2)(0.7^{10)}}[/tex]

[tex]= 1 - 0.00744 - 0.0563 - 0.1667[/tex]

[tex]= 0.7696[/tex]

The likelihοοd that at least three members οf the cοmmittee lack technical prοficiency is 0.7696, rοunded tο fοur decimal places.

e) Using the same binοmial distributiοn as in part d), we can calculate the likelihοοd that at mοst 4 members οf the cοmmittee are nοt technically adept by adding the prοbabilities fοr X=0, 1, 2, 3, and 4:

P(X<=4) = P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4)

[tex]\mathrm{= (12\ choose\ 0)(0.3^0)(0.7^{12}) + (12 \ choose\1)(0.3^1)(0.7^|{11}) + (12 \ choose\2)(0.3^2)(0.7^{10})}\\\mathrm{ + (12 \ choose\3)(0.3^3)(0.7^9) + (12 \ choose\4)(0.3^4)(0.7^8)}[/tex]

[tex]= 0.9851[/tex]

Rounding tο four decimal places, the likelihood that no more than four committee members are technοlogically savvy is 0.9851.

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WILL GIVE 5 STARS

Find the eighth term in the sequence and explain how you arrived at this answer.

4, 16, 36, 64, 100, ...

Answers

The eighth term of the sequence is 256.

What is the eighth term in the sequence?

To find the eighth term in the sequence 4, 16, 36, 64, 100, ...., we need to first determine the pattern that generates the sequence.

Looking at the sequence, we notice that;

the first term is 4, which is equal to 2^2. the second term is 16, which is equal to 4^2. the third term is 36, which is equal to 6^2. the fourth term is 64, which is equal to 8^2. the fifth term is 100, which is equal to 10^2.

Therefore, we can see that the nth term of the sequence is equal to n^2 * 2^0, 2^2, 2^2, 2^2, 2^2, 2^2, ...

So, the eighth term of the sequence would be:

8^2 * 2^2 = 64 * 4 = 256

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