If two states are selected at random from a group of 20 ​states, determine the number of possible outcomes if the group of states are selected with replacement or without replacement.

Answers

Answer 1

Answer:

With replacement

 21C2 = 210 outcomes

without replacement

20C2 = 190 outcomes

Step-by-step explanation:

For determining the number of possible outcomes you need count the number of possible combinations, because a combination is a selection of a number of items from a set of items where the order of selection does not matter.

The number of possible combinations is calculated thus

nCr = [tex]\frac{n!}{(n-r)!r!}[/tex]

     

           Where n: number of items of the set

                        r: number of selected items

a) If the group of states are selected with replacement then

   (n+r-1)Cr  

   n = 20 states

   r = 2 states

  then n +r -1 = 20 +2 -1 = 21

  21C2 = [tex]\frac{21!}{(21-2)!2!} = 210[/tex]

b) If the group of states are selected without replacement then

 nCr

 n = 20

 r = 2

20C2 = [tex]\frac{20!}{(20-2)!2!} = 190[/tex]

   

Answer 2
Final answer:

When two states are chosen with replacement from 20, there are 400 possible outcomes. Without replacement, there are 380 possible outcomes.

Explanation:

The question asks for the number of possible outcomes if two states are selected at random from a group of 20 states, with and without replacement. Replacement means a state can be chosen more than once, while without replacement means a state can only be chosen once.

Choosing with Replacement

When selecting with replacement, a state can be chosen, replaced, and then chosen again. Therefore, for each of the two selections, there are 20 possible states that can be chosen. This leads to a total of 20 * 20 = 400 possible outcomes.

Choosing without Replacement

In the scenario where states are chosen without replacement, the number of possible outcomes changes for the second selection because a state cannot be chosen twice. In this case, there are 20 options for the first state and 19 options for the second (since one state has been selected and is not replaced). Thus, the total number of possible outcomes is 20 * 19 = 380.

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Related Questions

One warehouse had 185 tons of coal, another one had 237 tons. The first warehouse delivered 15 tons of coal to its clients daily, the second one delivered 18 tons of coal to its clients daily. In how many days will the second warehouse have 1.5 times more coal than the first one?

Answers

Answer:

In 9 days will the second warehouse have 1.5 times more coal than the first one

Step-by-step explanation:

The coal left in warehouses after x days can be found using the equation:

first warehouse: 185 - 15xsecond warehouse= 237-18x

Let the second warehouse have 1.5 times more coal than the first one after n days then  

1.5 ×(185 - 15n)=237-18n  which gives: 277,5-22,5n=237-18n and 40,5=4,5n9=n

A leaky faucet drips 356,755 mL of water over the course of the year. There are approximately 3,785 mL in 1 gallon. How many gallons of water are leaked in one year

Answers

Gallons of water are leaked in one year is 94.253 gallons

Solution:

Given that leaky faucet drips 356,755 mL of water over the course of the year

There are approximately 3,785 mL in 1 gallon.

To find: gallons of water are leaked in one year

From given information,

Amount of water leaked in one year in ml = 356,755 mL

Also given in question that,

1 gallon = 3785 ml

[tex]1 \text{ ml} = \frac{1}{3785} \text{ gallons}[/tex]

Now we can convert 356,755 mL to gallons

[tex]356,755 \text{ ml} = \frac{1}{3785} \times 356755 \text{ gallons}\\\\356,755 \text{ ml} = 94.253 \text{ gallons}[/tex]

Thus gallons of water are leaked in one year is 94.253 gallons

am I right??
* Show examples & details if I am wrong!! *

Answers

Yes, you are correct.

From the image, we can see 3 triangles, the large triangle and the two triangles that make the larger triangle.

All 3 of these triangles are similar since they're angle measurements are the same (can be proven by geometry).

We can gather the following information from the given information.

The largest triangle (the one made up of two triangles) has a hypotenuse of 3+9=12, and a leg length of x. The hypotenuse to leg ratio is 12/xThe second largest triangle has a hypotenuse length x and leg length 9. The hypotenuse to leg ratio is x/9

We know the hypotenuse to corresponding leg ratio must be equal since these two triangles are similar. Thus, we have the equation:

12/x = x/9

Using the cross product property gives us:

x² = 9 × 12

x² = 108

Taking the square root of both sides gives us:

x = √108

= 6 √3

Thus, your answer is correct. Great job!

Let me know if you need any clarifications, thanks!

The admission fee at an amusement park is $2.50 for children and $5.80 for adults. On a certain day, 343 people entered the park, and the admission fees collected totaled $1369. How many children and how many adults were admitted?

Answers

188 children and 155 adults were admitted that day.

Step-by-step explanation:

Given,

Cost of one children admission = $2.50

Cost of one adult admission = $5.80

Number of people entered = 343

Total admission fees collected = $1369

Let,

Number of children admission = x

Number of adult admission = y

According to given statement;

x+y=343     Eqn 1

2.50x+5.80y=1369     Eqn 2

Multiplying Eqn 1 by 2.50

[tex]2.50(x+y=343)\\2.50x+2.50y=857.50\ \ \ Eqn\ 3[/tex]

Subtracting Eqn 3 from Eqn 2

[tex](2.50x+5.80y)-(2.50x+2.50y)=1369-857.50\\2.50x+5.80y-2.50x-2.50y=511.50\\3.30y=511.50[/tex]

Dividing both sides by 3.30

[tex]\frac{3.30y}{3.30}=\frac{511.50}{3.30}\\y=155[/tex]

Putting y=155 in Eqn 1

[tex]x+155=343\\x=343-155\\x=188[/tex]

188 children and 155 adults were admitted that day.

Keywords: linear equation, subtraction

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3x-4y>12 which order pair (x,y) satisfies the inequality?

Answers

Since in the question, there are no ordered pairs given so you can consider the below explanation to check which ordered pairs satisfies the inequality 3x-4y>12

Step-by-step explanation:

We need to identify which ordered pair(x,y) satisfies the inequality 3x-4y>12

The ordered pair (x,y) which satisfies the inequality will be the values of x and y that satisfies the inequality given 3x-4y>12

So, if x= 2 and y = 2 then the inequality will be:

3x-4y>12

3(2)-4(2)>12

6-8>12

-2>12 is false because -2 is not greater than 12

So, ordered pair (2,2) doesn't satisfy the inequality 3x-4y>12

Now if x = 10 and y = 2 then the inequality will be:

3x-4y>12

3(10)-4(2)>12

30-8>12

22>12 is true because 22 is greater than 12.

So, ordered pair (10,2) satisfies the inequality 3x-4y>12

Since in the question, there are no ordered pairs given so you can consider the above explanation to check which ordered pairs satisfies the inequality 3x-4y>12

Keywords: Solving inequalities

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Final answer:

To find the order pair (x,y) satisfying the inequality 3x - 4y > 12, substitute potential order pairs for x and y and evaluate. If the result is greater than 12, then the order pair satisfies the inequality.

Explanation:

The inequality given is 3x - 4y > 12. To find the order pair (x,y) that satisfies this inequality, let's plug in some potential solutions and see which one works.

For example, let's try the order pair (6, 1): 3(6) - 4(1) = 18 - 4 = 14, which is greater than 12, so (6,1) does satisfy the inequality.

But if we try the order pair (2, 3): 3(2) - 4(3) = 6 - 12 = -6, which is not greater than 12, so (2,3) does not satisfy the inequality.

Through these examples, you can see how we can find potential solutions to the inequality by substituting different order pairs for x and y.

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The 9-1-1 service fee on telecommunications bills is what type of tax?Select all that apply
Service tax
Professional service tax
Ad valorem tax
Fixed tax
Business tax

Answers

The 9-1-1 service fee on telecommunications bills is a type of tax such as service tax, fixed tax, business tax. Thus, the option (a), (d) and (e) is correct.

What is tax?

The term tax refers to the government charge the extra money for goods and services. The tax is also called as financial charge. The amount of tax are collect to government account as spent on public welfare. The public pay tax is compulsory. There are two types of tax such as direct tax and indirect tax.

The telecommunications bills are also included tax such as service tax, fixed tax, and business tax etc. The service tax is an indirect tax as charge on exchange of services. The fixed tax are apply on lump sum amount. The business tax is included income tax, and other expenses tax (wages, salaries etc.)

Therefore, option (a) (d) and (e) is correct.

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In 2001 , chipper had 102 runs batted in. In 2008 , Chipper had only 75 runs batted in. Calculate the percent change in runs batted in from 2001 to 2008

Answers

Answer: There is decrease in percent of 26.47% from 2001 to 2008.

Step-by-step explanation:

Since we have given that

Number of runs that chipper had batted in 2001 = 102

Number of runs that chipper had batted in 2008 = 75

So, the year gap = 7 years

Difference in runs = 102- 75 =27

So, the percent change in runs batted from 2001 to 2008 is given by

[tex]\dfrac{27}{102}\times 100\\\\=\dfrac{2700}{102}\\\\=26.47\%[/tex]

Hence, there is decrease in percent of 26.47% from 2001 to 2008.

Two concentric circles with radii of 19 and 29 units bound a shaded region. A third circle will be drawn with area equal to that of the shaded area. What must the radius of the third circle be? Express your answer in simplest radical form.

Answers

Answer:  4*sqrt(30)

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

Work Shown:

Let P and Q be two concentric circles

P = area of circle with radius 19

P = pi*r^2

P = pi*19^2

P = 361pi

-------

Q = area of circle with radius 29

Q = pi*r^2

Q = pi*29^2

Q = 841pi

-------

R = area of shaded region between circle P and circle Q

R = region outside circle P, but inside circle Q

R = Q - P

R = 841pi - 361pi

R = 480pi

------

S = area of circle with area equal to region R's area

S = 480pi

S = pi*r^2

pi*r^2 = 480pi

r^2 = 480

r = sqrt(480)

r = sqrt(16*30)

r = sqrt(16)*sqrt(30)

r = 4*sqrt(30)

The height of the water in a fish pond is 42.5 inches. Water is being drained from the pond at a rate of 3.75 inches per minute. What is the height of the water after 3 minutes?

Answers

Height of the water after 3 minutes is 31.25 inches

Solution:

Given that height of the water in a fish pond is 42.5 inches

Water is being drained from the pond at a rate of 3.75 inches per minute

To find:  height of the water after 3 minutes

According to given information,

Water drained in 1 minute = 3.75 inches

So height of the water after 3 minutes is calculated by following steps:

1) find how much water is drained in 3 minutes

2) subtract value obtained in step 1 from total height of water in fish pond

Step 1:

water is drained in 3 minutes = Water drained in 1 minute x 3

[tex]\text {water is drained in } 3 \text { minutes }=3.75 \times 3=11.25[/tex]

Thus water drained in 3 minutes is 11.25 inches

Step 2:

height of the water after 3 minutes = total height of water in fish pond - water drained in 3 minutes

height of the water after 3 minutes = 42.5 - 11.25 = 31.25 inches

Thus height of the water after 3 minutes is 31.25 inches

Final answer:

After draining water at a rate of 3.75 inches per minute for 3 minutes, the height of the water in the pond decreases from 42.5 inches to 31.25 inches.

Explanation:

The question is asking for the height of the water in a pond after draining some amount of water for a specified time. Initially, the pond has a water height of 42.5 inches. Water is being drained at a rate of 3.75 inches per minute. To find the height of the water after 3 minutes, we need to calculate the total amount of water drained and subtract it from the initial height.

Total water drained in 3 minutes = Drain rate per minute × number of minutes = 3.75 inches/minute × 3 = 11.25 inches.

Height of water after 3 minutes = Initial height - Total water drained = 42.5 inches - 11.25 inches = 31.25 inches.

Therefore, the height of the water in the pond after 3 minutes is 31.25 inches.

Beneficial terms of trade are the terms or prices that are between the two parties' oppotunity costs

Answers

Answer:

Beneficial terms of trade or trading price between two parties are opportunity costs lower than the cost to manufacture them locally which benefits both parties. They must be less enough to cover the freight charges or additional service charges that may arise.

If a supply curve is a vertical​ line, it is​ ________, and if it is a horizontal​ line, it is​ ________.

Answers

what's the answer choices

If a supply curve is a vertical line, it is a perfectly inelastic supply. If it is a horizontal line, it is a perfectly elastic supply.

I attached an image below of an example of these types of curves.

Hope this helps :)

Can someone help me?

Divide using long division.

Answers

Answer:

The answer to your question is   -3x² + 29x -150

Step-by-step explanation:

                                -3x² + 29x -150

  x³ + 6x² - 3x - 5     -3x⁵ + 11x⁴ + 33x³ - 26x² - 36x - 6

                                +3x⁵ +18x⁴ -   9x³  - 15x²

                                   0     29x⁴ +24x³ - 41x² - 36x

                                         -29x⁴ - 174x³ +87x²+145x

                                            0     -150x³ +46x² +109x - 6

                                                  +150x³ +900x²-450x -750

                                                       0       946x² -341x -756

Quotient =   -3x² + 29x -150

Remainder = 946x² -341x -756

The original price of a computer is $599.99. Suzie has a 15%-off coupon for the computer. A sales tax of 7% will be added to the sale price of the computer. Which expression would calculate how much Suzie will pay for the computer?

Answers

The required cost of a computer Suzie will pay is $545.69.

What is the percentage?

The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

Here,
The original price of a computer is $599.99.
Suzie has a 15%-off coupon for the computer.
Discounted price = (1 - 0.15)×599.99

Discounted price = 0.85×599.99

A sales tax of 7% will be added to the sale price of the computer.
Price of the computer after taxes = (1 + 0.07)0.85×599.99
                                                   = $545.69

Thus, the required cost of a computer Suzie will pay is $545.69.

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Final answer:

To find how much Suzie will pay for a computer with a 15% discount and a 7% sales tax, first calculate the discount, then subtract it from the original price, calculate the sales tax on the sale price, and add it to the sale price. The total payment is the original price reduced by the discount and increased by the sales tax, rounded to the nearest cent would be approximately $545.69.

Explanation:

Calculation of Total Payment for the Computer with a Discount and Sales Tax

To calculate how much Suzie will pay for the computer after applying a 15%-off coupon and adding a 7% sales tax, you will need to perform two main calculations. First, calculate the discount amount by converting the percentage to a decimal and multiplying it by the original price. Second, calculate the sales tax on the discounted price by again converting the percentage to a decimal and multiplying it. Finally, add the sales tax to the discounted price to arrive at the total cost.

Here's a step-by-step breakdown of the calculations:

Add the sales tax to the sale price to find the total cost: $509.9915 + $35.699405 = $545.690905.

Therefore, the expression to calculate Suzie's total payment for the computer is ($599.99  times (1 - 0.15))  times (1 + 0.07). When actually performing the calculation, the total payment, rounded to the nearest cent, would be approximately $545.69.

Calculate the slope of the line given the following two points. Point 1 (0, 0) and Point 2 (6, 12)

M = _______

Answers

。☆✼★ ━━━━━━━━━━━━━━  ☾  

slope = difference in y / difference in x

slope = (12 - 0) / (6 - 0)

slope = 12/6

slope = 2

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slope

m=y2-y1/x2-x1m=12-0/6-0m=12/6m=2

Done

It is observed that a certain bacteria culture has a relative growth rate of 15% per hour, but in the presence of an antibiotic the relative growth rate is reduced to 5% per hour. The initial number of bacteria in the culture is 24. Find the projected population after 24 hours for the following conditions. (Round your answers to the nearest whole number.)

Answers

Final answer:

In this bacterial growth problem, the population after 24 hours under normal conditions would be approximately 19136 bacteria. With a reduced growth rate due to antibiotics, the population would be approximately 79 bacteria.

Explanation:

The subject of the question relates to the concept of exponential growth, as demonstrated by a bacteria population. Given that the initial population is 24, the population P after time t, in this case in hours, is given by the formula P = P0 * (1 + r/100)^t, where P0 is the initial population, r is the relative growth rate (percentage), and t is time.

Under normal growth conditions, after 24 hours the population would be P = 24 * (1 + 15/100)^24 = approximately 19136, rounded to the nearest whole number. However, with the introduction of antibiotics, reducing the growth rate to 5%, after 24 hours the population would be P = 24 * (1 + 5/100)^24 = approximately 79, rounded to the nearest whole number.

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Raphael graphed the functions g(x)=x+2 and f(x)=x−1. How many units below the y-intercept of g(x) is the y-intercept of f(x)? A coordinate plane with 2 lines drawn. The first line is labeled f(x) and passes through the points (0, negative 1) and (1, 0). The second line is labeled g(x) and passes through the points (negative 2, 0) and (0, 2). −3 units −1 units 2 units 3 units

Answers

Answer:

3 units below the y-intercept of g(x) is the y-intercept of f(x)

Step-by-step explanation:

[tex]g(x)=x+2[/tex] and [tex]f(x)=x-1[/tex]

In f(x)= mx+b the y intercept is b

In [tex]g(x)=x+2[/tex], the y intercept value is 2

In [tex]f(x)=x-1[/tex], the y intercept value is -1

the difference in y intercept is +2-(-1)=+3

3 units below the y-intercept of g(x) is the y-intercept of f(x)

A corporation issued for cash 100,000 shares of its $0.01 par value common stock for $450,000. Which of the following is the correct journal entry to record this transaction?

Answers

Answer:

cash = $450000                                 ........... debit

common stock =  1000                       .......... credit

paid in capital amount =  $449000 ............ credit

Step-by-step explanation:

given data

share = 100000

par value = $0.01

total selling price = $450,000

solution

here

here total selling price is $450000

so cash = $450000    ........... debit

and common stock will be

common stock = 100000 × 0.01

common stock =  1000       .......... credit

and paid in capital amount will be

paid in capital amount = selling price - common stock

paid in capital amount =  $450000 - $1000

paid in capital amount =  $449000 ............ credit

AB = 4x DC = x + 9 AD = 6 BC = 2y Quadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruent. Show that quadrilateral ABCD is a parallelogram by finding the lengths of the opposite side pairs.

Answers

Answer:

Therefore the lengths of the opposite side pairs, AB and BC are 12 units and 6 units .

Step-by-step explanation:

Given:

[] ABCD is a Parallelogram.

∴ pairs of opposite sides are congruent

∴ AB = DC and

  BC = AD

To Find:

Length of AB = ?

Length of BC = ?

Solution:

[] ABCD is a Parallelogram. .............Given

∴ pairs of opposite sides are congruent

∴ AB = DC        and          BC = AD

On substituting the values we get

For 'x' i.e AB = DC  

[tex]4x=x+9\\\\4x-x=9\\\\3x=9\\\\x=\frac{9}{3}\\ \\x=3[/tex]

For 'y' i.e BC = AD

[tex]2y=6\\\\y=\frac{6}{2} \\\\y=3\\[/tex]

Now substituting 'x' and 'y' in AB and BC we get,

[tex]Length\ AB=4\times 3 =12\ units\\\\Length\ BC=2\times 3 =6\ units[/tex]

Therefore the lengths of the opposite side pairs, AB and BC are 12 units and 6 units .

C) 12, 6

Set opposite sides equal to each other and solve for x or y.

AB = DC → 4x = x + 9 → 3x = 9 → x = 3

So, AB = DC = 12

And,

AD = BC → 6 = 2y → y = 3

So, AD = BC = 6

Describe a way of showing that a continuous function on n open interval (a b, ) has a minimum value.

Answers

Answer:

See explanation below

Step-by-step explanation:

In fact, the interval has to be closed (just as [a,b], for b>a). Otherwise, this is not neccesarily true. For example, consider the function f(x) = -1/x defined on the open interval (0.1). f is continuous (quotient of continuous functions) but it does not have a minimum value: it decreases infinitely near zero.

To show this result on the interval [a,b], the idea is the following:

We can use a previous theorem. If f is continuous on [a,b], there exists some N>0 such that N≤f(x) (that is, f is bounded below). Now, we take the biggest N such that N≤f(x) for all x∈[a,b] (this is known as the greatest lower bound)

The number N is the candidate for the minimum value of f. Next, we have to show that there exists some p∈[a,b] such that f(p)=N. To do this, we must use the continuty of f on [a,b]. There are many ways to do it, and usually they require the epsilon-delta definition of continuity.

This is just a description of the ideas involved, but of course, a rigorous proof would need more technical details, depending on the theorems you are allowed to use.  

A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is

Answers

Answer:

10%

Step-by-step explanation:

Machine out put power =100 watt

Machine input power=1000 watt

We have to find the efficiency of the machine.

We know that

Efficiency of machine=[tex]\frac{O.p}{I.p}[/tex]

Where O.p=Output power

I.p=Input power

By using the formula

Efficiency of machine=[tex]\frac{100}{1000}=0.1[/tex]

Efficiency of machine (in percent)[tex]0.1\times 100=[/tex]10%

Hence, the efficiency of machine=10%

The efficiency of the machine is 10%, as it is calculated by dividing the output power, 100 watts, by the input power, 1000 watts, and then multiplying by 100 to express it as a percentage.

The efficiency of a machine is calculated by dividing the useful output power by the input power and then multiplying the result by 100 to get a percentage. For the given machine, which puts out 100 watts for every 1000 watts put into it, the calculation would look like this:

Efficiency (Eff) = (Wout / Ein) times 100%

Efficiency (Eff) = (100W / 1000W) times 100%

Efficiency (Eff) = 0.1 times 100%

Efficiency (Eff) = 10%

This means the efficiency of the machine is 10%.

what is the solution of x^2 = 16^x?​

Answers

Answer:

x = -0.5.

Step-by-step explanation:

x^2 = 16^x

One way to do this is to use 2 graphs  y = x^2 and y = 16^x  .

The solution  is where the 2 graphs intersect.

The answer is x = -0.5.

The double number line shows that in 222 minutes, Pogo the dog can fetch a frisbee 666 times. Based on the ratio shown in the double number line, how many times will Pogo fetch the frisbee in 444 minutes?

Answers

Answer:

Dog Pogo will fetch the frisbee 12 times in 4 minutes.

Step-by-step explanation:

Given:

Number of minutes required =2 minutes.

Number of times frisbee fetch by dog = 6 times

We need to find Number of times the dog can fetch the frisbee in 4 minutes.

First we will find number of frisbee fetch in minute.

In 2 minutes = 6 times frisbee fetched by the dog

so in 1 minute = Number of times frisbee fetched by the dog in 1 minute.

By using Using Unitary method we get;

Number of times frisbee fetched by the dog in 1 minute = [tex]\frac{6}{2} =3[/tex]

Hence in 1 minutes the dog can fetch frisbee 3 times.

for 1 min = 3 times frisbee is been fetched by dog

So for 4 minutes = Number of times frisbee is been fetched by dog in 4 min.

Again by using Unitary Method we get;

Number of times frisbee is been fetched by dog in 4 min = [tex]3\times4 = 12[/tex]

Hence Dog Pogo will fetch the frisbee 12 times in 4 minutes.

Answer:12

Step-by-step explanation:

If a dog was 7 weeks old 5 days ago when was it born?
What is its birth date
Like if it was born today its birthdate would be 12/19/19, and you could even go more into detail and say for instance Thursday 12/19/19

Answers

I’m pretty sure the birth date is 10/26/19

NEED HELP QUICK!! 25 POINTS TO ANSWER

Answers

Set up the equation and solve for x:

11x-2 = 9x +2 + 10

11x-2 = 9x +12

2x = 14

X = 7

BOC = 9x +2 = 9(14) +2 = 126+2 = 128

Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 714 ​subjects, each was asked how often he or she read a book.read a book. The survey subjects were internet users who responded to a question that was posted on a news website.
a) it is flawed because it is a census
b) it is flawed because it is not statistically significant.
c) it appears to be sound because the data are not biased in anyway.
d) it is flawed because it is a voluntary response sample.

Answers

Answer:

Option D) It is flawed because it is a voluntary response sample.

Step-by-step explanation:

We are given the following information in the question:

The subjects of the survey were internet users who responded to a question that was posted on a news website.

A total of 714 subjects responded to this question, answering the question, how often he or she read a book.

Option D) It is flawed because it is a voluntary response sample.

Voluntary response sample:

A sample in which the subjects themselves decide whether to be included in the study.People chose to be a part or not to be a part of the survey since the question was posted on website.Some maybe interested some may not in answering this question.A voluntary sample is made up of people who self-select into the survey. Often, these folks have a strong interest in the topic of the survey thus creating a bias.Voluntary response bias occurs when sample members are self-selected volunteers.

An online music club has a one- time registration fee of $13.95 and charges $0.49 to buy each song. If Emma has $50.00 to join the club and buy songs, what is the maximum number of songs she can buy?

Answers

Answer: 73 songs

Step-by-step explanation:

The online music club has a one- time registration fee of $13.95 and charges $0.49 to buy each song. Let x represent the number of songs that a member buys. This means that the amount that a member who just joins the music club pays for x songs would be

0.49x + 13.95

If Emma has $50.00 to join the club and buy songs, the maximum number of songs she can buy would be expressed as follows

0.49x + 13.95 = 50

0.49x = 50 - 13.95 = 36.05

x = 36.05/0.49 = 73.57

the maximum number of songs she can buy is 73 since the number of songs cannot be a fraction.

50.00 - 13.95 = 36.05 (subtract the registration fee)

36.05/0.49 =  73.57 so she can buy 73 songs

How many square shaped tiles of area 25 m2 would you need to cover a rectangular plot of area 700 m2? A. 25 B. 28 C. 175 D.17500

Answers

Answer:28 square shaped tiles of area 25 m^2 would be needed to cover the rectangular plot.

Step-by-step explanation:

The area of the rectangular plot is 700m^2

The area of each square tiles is 25m^2

The number of tiles needed to cover a rectangular plot would be

700/25 = 28 square shaped tiles

A company did a quality check on all the packs of trail mix it manufactured. Each pack of trail mix is targeted to weigh 9.25 oz. A pack must weigh within 0.23 oz of the target weight to be accepted. What is the range of rejected masses, x, for the manufactured trail mixes?
a. x < 9.02 or x > 9.48 because |x − 0.23| + 9.25 > 0
b. x < 9.25 or x > 9.48 because |x − 9.25| > 0.23
c. x < 9.25 or x > 9.48 because |x − 0.23| + 9.25 > 0
d. x < 9.02 or x > 9.48 because |x − 9.25| > 0.23

Answers

Answer:

d. x < 9.02 or x > 9.48 because |x − 9.25| > 0.23

Step-by-step explanation:

Given,

The standard weight of the pack = 9.25 oz,

The pack must weigh within 0.23 oz of the target weight to be accepted.

i.e. if x represents the weight of the pack,

If x > 9.25 oz

then x - 0.925 ≤ 0.23  ......(1)

if x < 9.25

then 9.25 - x ≤ 0.23

⇒ -(x-9.25) ≤ 0.23   .......(2)

From equation (1) and (2),

The accepted range of mass is,

|x-9.25| ≤ 0.23

Hence, the rejected range mass would be,

|x-9.25| > 0.23

⇒ x - 9.25 > 0.23 or -x + 9.25 < 0.23

⇒ x > 0.23 + 9.25 or -x > 0.23 - 9.25

⇒ x > 9.48 or - x > −9.02

x > 9.48 or  x < 9.02

Using k as the constant of proportionality, write an equation that expresses: Z varies jointly as x and y.

Answers

Answer: z= kxy

Step-by-step explanation:

There are three types of variation. We have direct, inverse and joint.

Variation has to do with the manner in which we relate two mor more variables either directly or inversely.

For joint variation, we relate two or more variables to one another. A variable among those variables is written in terms of the remaining variables directly.

According to the question, since we have three variables z, x and y and we are to express z joint as x and y.

Joint variation is a "direct relationship" between variables i.e z will be directly proportional to the product of x and y making k as constant of proportionality. Mathematical relationship will give us;

Z=kxy

Assessment
8. Compare the function with the parent function. Without graphing, what are the vertex, axis of
symmetry, and transformations of the given function?
(1 point)
y= | 10x – 2| -7

A. x = 2: translated to the right - unit and down 7 units
B. translated to the left – unit and up 7 units
C. translated to the left – unit and down 7 units
D. translated to the right – unit and down 7 units
ul

Answers

Axis of symmetry for this function will be x=2 because your origin point is always the reference for the line of symmetry. In this case, it as been shifted to the right 2 units giving you x=2. Firstly, the transformation is a horizontal stretch by a factor of 10. Secondly, it is shifted 2 units to the right and finally shifted 7 units down. Remember when a constant is added or subtracted to x in a function, it is shifted the number of u its opposite of the constant. When there is a constant separate from x, such as outside parentheses or absolute value bars, it is shifted up or down the given amount.
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