A consumer testing service is commissioned to rank the top 3 brands of laundry detergent. A total of 10 brands are to be included in the study. In how many ways can the consumer testing service arrive at the final ranking

Answers

Answer 1

Answer:

120ways

Step-by-step explanation:

This question bothers combination. Combination has to do with selection.

Given

Total number of brands = 10

If we the service is to rank the top 3, this can be done in 10C3 number of ways.

10C3 = 10!/(10-3)!3!

10C 3 = 10!/7!3!

10C3 = 10*9*8*7!/7!3!

10C3 = 10*9*8/6

10C3 = 720/6

10C3 = 120

Hence it will take 120ways for the consumer testing service to arrive at the final ranking


Related Questions

How to calculate slope from a line on a graph

Answers

Find two points on the line, and use y2-y1/x2-x1 to find the slope, then look at the y axis to locate the intercept

(18 ÷ 3) + (3² - 7) =

Answers

finish brackets first.

(6) + (9-7)

= 6+2

=8

If 50% of the students in your class like chocolate cake, how many students are in your class if 16 students like chocolate cake? hurry!

Answers

The required number of students in the class is given as 32, as per the given condition.

What is the percentage?

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

Here,
Let the number of students in the class be x,
according to the question,
50% of x = 16
x = 16/50%

x = 16/0.5

x = 160/5
x = 32

Thus, the required number of students in the class is given as 32, as per the given condition.

Learn more about percentages here:

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please help and explain!! I got 14x +0​

Answers

Answer:

[C] 16

Explanation:

7x + 8 − 7x + 8

= 7x + 8 + −7x + 8

Combine Like Terms

= 7x + 8 + −7x + 8

= (7x + −7x) + (8 + 8)

= 16

It's 16.
It's would be 7x+8-7x+8 the sevens cancel put and you add the 8s. Also rmbr that a positive time a negative is still negative.

Create an algebraic expression ​

Answers

Answer:

3x-5+2y

Step-by-step explanation:

Wasnt much detail to the question so i created a random algebra expression you cannot have an equal sign for an expression because that would change it from an expression to an equation.

A basic algebraic expression could be the following:

4x+2

If you wanted to make this an equation it could be written as:

4x+2=100

This is the answer to the equation and work:

Simplify and Factorise a(a + b - c) - bc

Answers

[tex] {2a}^{2} + ab - ac - bc[/tex]

Step-by-step explanation:

[tex] = a(a + ab - c) - bc[/tex]

[tex] = {a}^{2} + {a}^{2} + ab - ac - bc[/tex]

[tex] = {2a}^{2} + ab - ac - bc[/tex]

Plsss help ASAP pls this is due at 12:00

Answers

Answer:

$74.49

(basically $74.50)

Step-by-step explanation:

hope that helps :))

The owner of Carlisle Construction is a little
overprotective of his brand new cement mixer,
so each night, he parks it in a storage facility
that is 120 feet long, 45 feet wide, and 45
feet high. What is the facility's volume in cubic
yards?

Answers

Answer:

The facility's volume in cubic yards is 9000

Step-by-step explanation:

The volume of the facility is given by the multiplication of it's dimensions.

We want the volume in cubic yards, so the dimensions have to be in yards.

Each feet has a third of an yard. So the dimensions are:

120 feet = 40 yards

45 feet = 15 yards

45 feet = 15 yards

What is the facility's volume in cubic yards?

[tex]V = 40*15*15 = 9000[/tex]

The facility's volume in cubic yards is 9000

can anyone help me thanks

Answers

Answer:

C

Step-by-step explanation:

We can use the vertex form of a quadratic equation, given by:

[tex]f(x)=a(x-h)^2+k[/tex]

Where a is the leading coefficient and (h, k) is the vertex.

We are given that the vertex is (-3, 1).

Hence, h = -3 and k = 1. By substitution:

[tex]f(x)=a(x-(-3))^2+(1)[/tex]

Simplify:

[tex]f(x)=a(x+3)^2+1[/tex]

With this, we can eliminate B and D.

Notice that our parabola is curving downwards.

Therefore, our leading coefficient must be negative.

The only choice that leaves us with is C.

So, our function is:

[tex]f(x)=-(x+3)^2+1[/tex]

And our final answer is C.

Linda and Rob open an online savings account that has a 2.89% annual interest rate, compounded
weekly. If they deposit $35 every week, how much will be in the account after 15 years?

Answers

Answer:

FV= $34,222.33

Step-by-step explanation:

First, we need to calculate the weekly interest rate:

Weekly interest rate= 0.0289/52= 0.00056

To calculate the future value (FV), we need to use the following formula:

FV= {A*[(1+i)^n-1]}/i

A= weekly deposit

n= 15*52= 780

A= $35

FV= {35*[(1.00056^780) - 1]} / 0.00056

FV= $34,222.33

Norma Jean makes $25 per hour. She works 35 hours per week. She gets a commission of 15% on her total sales. How much should Norma sell to make $4,500 in a single week?

Norma needs to make sales worth $ _____ to make $4,500.​

Answers

Answer:

$24,166.67

Step-by-step explanation:

Let carry out the breakdown:

So Norman Jean makes a flat rate of $25 per hour, also she works 35 hours per week.

From the above statement Jean will make => 25 × 35 = $875 in a single week without commission.

For Jean to make $4500 in a week, we derive an equation for this:

875 + x = 4500;

x is the amount of commission Jean has to get in a week to make up to $4500 in that week => x = 4500-875; x = $3625.

Let y be the amount of sales Jean has to make to get a commission of x, we derive the following equation: 0.15 × y = x.

y = x ÷ 0.15 => 3625 ÷ 0.15

y = 24166.67.

So for Jean to meet her target of $4500 in a single week, Jean needs to make a sale worth $24,166.67.

What is the value of the expression three less than the quotient of ten and a number, increased by six" when n = 2?

Answers

Answer:

The Answer is 8.

Step-by-step explanation:

I just took the test on Edge and got it right, hope this helps! :)

10 to the power of -3

Answers

Answer:

its 0.001

Step-by-step explanation:

Hope this helps :)

Answer:

0.001

Step-by-step explanation:

10^-3 = 0.001

You don't multiply since it's a negative power.

Ace

HELPP!!! DON'T ANSWER IF YOU ARE NOT SURE PLEASE !!

Select the reason why these triangles are similar. If they are not, select “not similar”

Answers

Well we need what reasons they could be similar. Is that all you are given or are there options?

A machine can print 300 posters in 10 minutes. How many posters can the machine print in 2 minutes?

Answers

Answer: 60

Step-by-step explanation:

30 papers every minute.

Answer:

The correct answer is 60

Step-by-step explanation:

First you find the unit rate by doing 300 divided by 10 which equals 30  posters per minutes then do 30 times 2 to equal 60

HAVE A GOOD DAY!

4. Evaluate 5x2 + 16y for x = 2 and y = -3

Answers

Answer:

-28

Step-by-step explanation:

=5(2)²+16(-3)

=5(4)+(-48)

=20-48

=-28

Answer:

-28

Step-by-step explanation:

Expression: 5x²+16y

x=2 and y=-3

We'll substitute x as 2 and y as -3

5(2)²+16(-3)

Following Order of Operations, do the exponent part first

5(4)+16(-3)

Multiply

20-48

subtract

-28

Hope this helps

Segment GH is a mid segment of triangle JKL.Select all of the equations that could be used to find the value of x.

Answers

Answer:

A. 2(5x + 2) = 3x + 32

F. ½(3x + 32) = 5x + 2

Step-by-step explanation:

GH = 5x + 2

KL = 3x + 32

Based on the midsegment theorem,

½(KL) = GH

That is:

½(3x + 32) = 5x + 2

Or

2(GH) = KL

That is:

2(5x + 2) = 3x + 32

Please help me with this

Answers

Answer:

2nd option AOD and BOD because they add up to 180

Step-by-step explanation:

Due Today, Help me pls. I will MARK AS BRAINLIEST.

Answers

BAD, ADB, DBA, DA, DB, BA :)

Eric and Shiloh each have a savings account. The ratio of Eric's account balance to Shiloh's account balance is 4:3. Together they have a total of $140 in their accounts. In the tape diagram below, how much money does each bar represent? [Type your answer as a number.]​

Answers

Answer:

20

Step-by-step explanation:

E:S

4:3

4u+3u=140

7u=140

u=20

Find the coordinates of the midpoint AB

Answers

Where’s the Graph???????

30 cupcakes he spreads 1/5 mint icing and 1/2chocolate how many will have vanilla icing

Answers

Answer: 12 vanilla

Explanation:

1/5 of 30 = mint
6 = mint
1/2 of 30 - 6 = chocolate
1/2 of 24 = chocolate
12 = chocolate
30 - (12 + 6) = vanilla
30 - 18 = vanilla
12 = vanilla

Find the quotient by using a grid or drawing a picture.

720 ÷ 16
A. 46
B. 47
C. 45
D. 48

Answers

Answer:

C. 45


Explanation: I used a calculator

720 / 16 = 45

45 x 16 = 720.
C 16 goes into 720 45 times

What is the price of an $100 handbag during a 25% clearance sale?

Answers

Answer:

75 dollars

Step-by-step explanation:

What are the solutions of the equation x4 - 5x2 - 14 = 0? Use factoring to solve.
x = +/- √7 and x = +/- √2
x = +/- i√7 and x = +/- i √2
x = +/- i √7 and x = +/- √2
x = +/- √7 and x = +/- i √2

Answers

Answer:D

Step-by-step explanation:

The solution is: x = +/- √7 and x = +/- i √2  are the solutions of the equation x^4 - 5x^2 - 14 = 0.

What is  simplification?

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

here, we have,

given that,

we have to factorize the equation,

The given equation is

x^4 - 5x^2 - 14 = 0

To factor this expression, we can change variables to make easier to see the solution.

x^4 = y^2

and

x^2 = y

Applying the change, we have

y^2 - 5y - 14 = 0

Now, you can observe that to factor this expression, we just need to find two number which product is 14 and which difference is 5, such numbers are 7 and 2.

y^2 - 5y - 14 = 0

or, (y-7) ( y+2) = 0

However, remember that , y = x^2

so, (x^2-7) ( x^2+2) = 0

Applying the zero property, we have

x = +/- √7

and x = +/- i √2

As you can see, the equation has two real solutions and two complex solutions.

Therefore, the right answer is the last choice.

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Pls help and have a good day

Answers

Answer:

6^5

Step-by-step explanation:

You too, btw!

Answer:

6 with a small 5 on the side so press the button with the a and the small be then put 6 and 5 as the small number

exponents are just 6 x 6 x 6 x 6 x 6 just count the number of 6's and put it as the little number if that names sense

Step-by-step explanation:

27 students are learning to make balloons animals. There are 3,172 balloons to be shared equally among the students. How many balloons are left over after sharing them equally? Show all necessary work.

Answers

Answer:

you would do 3,172 divided 27 which would be 117 then subtract that by 3,172

Step-by-step explanation:

Evaluate −4(14)6x for x=13. Enter your answer as a fraction in simplest form in the box.

Answers

-15228 I think but let me know if I’m wrong please

pls help me answer this​

Answers

This picture doesn’t include all of the variables values, without it this can’t be solved. :)

13. The programmer at a local public radio station is compiling data on listeners who stream podcasts. An executive for the national broadcaster has communicated that the overall population mean is 20,500 with a standard deviation of 2,180. The local programmer has a sample of 30 podcasts for her station. By the central limit theorem, which interval do about 99.7% of the sample means fall within?

A. 20,102 and 20,898
B. 20,282 and 20,718
C. 19,306 and 21,694
D. 19,704 and 21,296

Answers

Answer:

C. 19,306 and 21,694

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, for samples of 30:

Mean: 20,500

Standard deviation: [tex]s = \frac{2180}{\sqrt{30}} = 398[/tex]

99.7% of the sample means fall within 3 standard deviations of the mean, by the Empircal Rule with the Central Limit Theorem:

Lower bound: 20500 - 3*398 = 19,306

Upper bound: 20500 + 3*398 = 21,694

So the correct answer is option C.

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