There are 25 students in a class, 7 of them will be chosen to go on a field trip. How many ways can these students be chosen.

Answers

Answer 1

Answer:

Step-by-step explanation:

order is not important so

25 ways to fill the first spot

24 ways to fill the second

23 ways to fill the third

...

19  ways to fill the 7th

25•24•23•22•21•20•19 = 2,422,728,000

which also equals 25! / (25 - 7)!


Related Questions

In the previous year, at Hub Motors ltd, for a particular model of Mercedes, Nissan and Ford, one could purchase (in million shillings) all three cars for a total of Ksh 150. This year, due to inflation, the same cars would cost Ksh 161. The cost of the Mercedes increased by 8%, the Nissan by 6%, and the Ford by 12%. If the price of last year's Nissan was Ksh 7 less than the price of last year's Mercedes, Use matrix inverse to find the price of each of the three cars last year?​

Answers

Answer:

Step-by-step explanation:

The graphs below have the same shape. What is the equation of the blue
graph?

A) g(x) = (x-4)^2
B) g(x) = (x+4)^2
C) g(x) = x^2 + 4
D) g(x) = x^2 - 4

Answers

The graphs of f(x) and g(x) are related by transforming one of the two graphs.

The equation of the blue graph is [tex]\mathbf{g(x) =(x - 4)^2}[/tex]

From the graphs, we have:

[tex]\mathbf{f(x) =x^2}[/tex]

f(x) is transformed to the right by 4 units.

The rule of this transformation is:

[tex]\mathbf{g(x) \to f(x - 4)}[/tex]

So, we start by calculating f(x - 4)

Given that:

[tex]\mathbf{f(x) =x^2}[/tex]

Substitute x - 4 for x in f(x)

[tex]\mathbf{f(x - 4) =(x - 4)^2}[/tex]

Also, recall that:

[tex]\mathbf{g(x) \to f(x - 4)}[/tex]

So, we have:

[tex]\mathbf{g(x) =(x - 4)^2}[/tex]

Hence, the equation of g(x) is [tex]\mathbf{g(x) =(x - 4)^2}[/tex]

Read more about transformation at:

https://brainly.com/question/11707700

Solve the equation.
-9x + 1 = -x + 17

Answers

Step-by-step explanation:

-9x + 1 = -x + 17

collect like terms

-9x + x = 17-1

-8x = 16

divide both sides by -8

-8x/-8 = 16/8

x = 2

Claudia trabaja en una fábrica de carritos de supermercado, como criterio de calidad de la fábrica se establece que un carrito con mercancia que tenga una masa de 30kg no debe superar los 30N de fuerza de empuje para comenzar a moverse, ni los 20N para mantenerse en movimiento, cual es el valor de la aceleración que experimentara al soltarse?

Answers

El carro de mercancía experimenta una aceleración neta de 0.333 metros por segundo al cuadrado al soltarse.

En esta situación se requiere una fuerza de 30 N para alcanzar la fuerza estática máxima ([tex]f_{s}[/tex]), entonces la fuerza de fricción ([tex]f_{k}[/tex]) se reduce a 20 N mientras se encuentre en movimiento. Si consideramos que la fuerza externa de 30 N se mantiene durante el fenómeno físico, entonces tenemos que la aceleración neta ([tex]a[/tex]), en metros por segundo al cuadrado, experimentada por el carrito de mercancía es determinada a partir de las leyes de Newton:

[tex]a = \frac{F-f_{k}}{m}[/tex] (1)

Donde [tex]m[/tex] es la masa del carrito de mercancía, en kilogramos.

Si sabemos que [tex]F = 30\,N[/tex], [tex]f_{k} = 20\,N[/tex] and [tex]m = 30\,kg[/tex], entonces la aceleración neta del carro de mercancías es:

[tex]a = \frac{30\,N-20\,N}{30\,kg}[/tex]

[tex]a = 0.333\,\frac{m}{s^{2}}[/tex]

El carro de mercancía experimenta una aceleración neta de 0.333 metros por segundo al cuadrado al soltarse.

Invitamos a consultar esta pregunta sobre la fricción seca: https://brainly.com/question/19115001

simplify 2/3x-4/9y+x+y

Answers

Here is ur perfect answer

I think this will help you

1,200 miles; 5% increase

Answers

Answer:

5%equals 5 divided by 100 equals 600

18
What is the value of y?
3
10
2y + 4
4
5
10 + 2x
6

Answers

From the principles of geometry, we can see that the value of y is 3.

Are the opposite sides of a rectangle equal?

The lengths of the opposing sides in a rectangle are equal. A rectangle is a quadrilateral with four parallel opposed sides and four right angles (90-degree angles).

In specifically, a rectangle has two sets of equal-length opposite sides. In a rectangle, the lengths of the neighboring sides can vary, but the lengths of the opposing sides are always the same. This feature sets a rectangle apart from other quadrilaterals.

We know that;

10 = 2y + 4

10 - 4 = 2y

y = 6/2

y = 3

Learn more about rectangle:https://brainly.com/question/15019502

#SPJ1

If you start with 65 milligrams of Chromium 51, used to track red blood cells, which has a half-life of 27.7 days. How long will it take for 80% of the material to decay?

Answers

Answer:

Half-Life uses the formula N () = Noe # No = Initial Amount time h = length of half-life. Ifyou start with 65 milligrams of Chromium 51,used to track red blood cells, which has half-life of 27.7 days: How long will it take for 80% ofthe material to decay? t= (27.7) h5 (65) (h3) 4= (27.7) h; (05)

Step-by-step explanation:

For the given data it will take 8.69 days for 80% of the material to decay.

What is half-life?

A radioactive substance's half-life is typically described as the amount of time it takes for one-half of its atoms to disintegrate or change into another substance.

It is given that, If you start with 65 milligrams of Chromium 51, used to track red blood cells, which has a half-life of 27.7 days.

N₀ = 65 milligrams

t1/2=27.7 days

N(t)=0.8(65 milligrams)=52 milligrams

[tex]N(t) = N_0(1/2)^ {\frac{t}{t_{1/2}} }[/tex]

Here,

N(t) is the amount of the substance remaining

N₀ is the initial substance amount

t is the time elapsed

t1/2 is the half-life

Substitute the given values,

[tex]N(t) = N_0(1/2)^ {\frac{t}{t_{1/2}} } \\\\ 52 = 65(1/2)^\frac{t}{27.7} \\\\ 52=65\left(\frac{1}{2}\right)^{\frac{t}{27.7}} \\\\ \frac{65\left(\frac{1}{2}\right)^{\frac{t}{27.7}}}{65}=\frac{52}{65} \\\\ \left(\frac{1}{2}\right)^{\frac{t}{27.7}}=\frac{4}{5} \\\\ \frac{t}{27.7}\ln \left(\frac{1}{2}\right)=\ln \left(\frac{4}{5}\right) \\\\ t =-\frac{27.7\ln \left(\frac{4}{5}\right)}{\ln \left(2\right)}[/tex]

[tex]t = 8.69 \ days[/tex]

Thus, for the given data it will take 8.69 days for 80% of the material to decay.

Learn more about half-life here,

https://brainly.com/question/24710827

#SPJ2

Which equation represents this sentence?

6 times the difference of a number and 5 is equal to 36


5−6x=36

6(x−5)=36

6x−5=36

6(5−x)=36

Answers

It’s 6(x-5)=36 because when it’s says times the difference it means 6 times x-5 if that makes sense

The equation that represents this sentence "6 times the difference of a number and 5 is equal to 36" will be; 6(x - 5) = 36

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables. A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

We are given a statement as "6 times the difference of a number and 5 is equal to 36"

Therefore, the 6 times means the multiplication.

Let the number be x then;

the difference of a number and 5 is equal to 36 means the subtraction that is;

(x - 5) = 36

Therefore, the equation becomes

6(x - 5) = 36

The equation that represents this sentence "6 times the difference of a number and 5 is equal to 36" will be; 6(x - 5) = 36

Learn more about equations here;

https://brainly.com/question/25180086

#SPJ2

what is 1/2 divided by 75.096868

Answers

Answer:

Step-by-step explanation:

This table represents the number of pounds, p, a puppy grows after w, weeks.


When graphed, all of the points in the table lie on the same line.


What is the slope and y-intercept of the line?



slope=−94, y-intercept=−0.8


slope=−49, y-intercept = 2


slope=49, y-intercept=−0.8


slope=94, y-intercept = 2

Weeks, w Weight in pounds, p

0 2

2 6.5

4 11

6 15.5 help plz

Answers

Answer:

the answer is slope=94, y-intercept = 2

Step-by-step explanation:

i took the test

does the graph represent a function?

Answers

Answer:

No

Step-by-step explanation:

fails the vertical line test, a test to see if a vertical line can touch 2 points on a graph at the same time.

-
Find the equation of the line that
is parallel to y = 2x – 7 and
contains the point (-3,6).

Answers

Step-by-step explanation:

The first step is to Know the condition for two lines be parallel is that have the same slope, and this form the slope given is 2, therefore the new function has its slope too

2)  with the slope and the two points givens, you can find the equation

Y-Y1 = m( X-X1) ,   Y-6 = 2[(X-(-3)]  ⇒Y-6 = 2X+6 ⇒Y = 2X+12, AND THIS IS THE EQUATION PARALLEL TO THE LINE Y = 2X-7

list all the prime numbers between 90 and 100

Answers

Im pretty sure the only prime number in between 90 and 100 is 97

Only 97 bc that is the only prime number

Isaiah has a points card for a movie theater.
He receives 75 rewards points just for signing up.
He earns 6.5 points for each visit to the movie theater.
He needs at least 140 points for a free movie ticket.

Write and solve an inequality that can be used to determine xx, the number of visits Isaiah can make to earn his first free movie ticket.

Inequality =
x - and _

Answers

Answer:

654

Step-by-step explanation:

You need to times the first 2 numbers nad then after that that you divide and then walaa ANSWER: 654

בוoit

what is the third term of the sequence defined by f(n)=2n-1

Answers

Answer:

your Answer has to be 5

Step-by-step explanation:

f(3) = 2x3 - 1

= 6 - 1

= 5

68% of what number is 17

Answers

Answer:

25

Step-by-step explanation:

We can set up an equation and solve for x (68% of x is 17)

68%*x=17       perform the inverse operation and divide both sides by 68%

dividing both sides by 68% will isolate the x variable

68%*x/68%= 17/68%      

x=17/68%

x=25

so, therefore,

68% of 25 is 17

Answer:

[tex]\displaystyle 11\frac{14}{25}[/tex]

Step-by-step explanation:

Whenever you take a percentage of something, you multiply. Turn 68% into a fraction and multiply by 17:

[tex]\displaystyle \frac{289}{25} = [\frac{17}{25}][17] \\ \\ \boxed{11\frac{14}{25}} = \frac{289}{25}[/tex]

I am joyous to assist you at any time.

According to the food label on a box cookies, each box has 16
servings and each sering contains 4 cookies. The weight of the
ba of cookies is Kilogroms. What is the weight of each
cooke?

Answers

I cant help you but I can give you the equation: 16 x 4 x weight per cookie = answer

Step-by-step explanation:

did you forget to write the whole question?

8 x 1 = 4 x _____ 8 x 2 = 4 x _____ 8 x 3 = 4 x _____ 8 x 4 = 4 x _____ 8 x 5 = 4 x _____ 8 x 6 = 4 x _____ 8 x 7 = 4 x _____ 8 x 8 = 4 x _____ 8 x 9 = 4 x _____ 8 x 10 = 4 x _____ Write two or three sentences to explain the pattern.

Answers

1)2

2)4

3)6

4)8

5)10

6)12

7)14

8)16

9) 18

10) 20

Help, please! You will be extremely smart if you answer this question, and if you do I will give brainliest. The test ends soon please help.

Answers

Answer:

B. y=6-1/3t

Step-by-step explanation:

If you graph this equation, it matches the given graph. Hope this helps :)

All of the points in the picture are on the same line *help asap*

Answers

Answer:

yes all of the points are on the same line

Step-by-step explanation:

What the answer is please

Answers

Answer:its the first one

Step-by-step explanation:

becuase it tells more explanation if you look at the answer or what im saying is problem to make it more simpler.

If x = 36 and y = 40 and “x varies directly as y”, then find “x” when y = 80.

Answers

Answer:

x= it will be 76

Drag each relation to the correct location on the table. Classify the relations according to whether or not they are functions.

Answers

they are all functions

If 10 milligrams are contained in 2 milliters. how many milligrams are contained in 28 milliliters?

Answers

Answer:

28,000 milligrams is your answer

Help please!!!!
Find the measure of the angle indicated

Answers

Answer:

x = 6

Step-by-step explanation:

Because we have parallel lines, we can use alternate angles are equal. Therefore, we know that 11x-6 = 10x.

Minus 11 from both sides, and we get -6 = -x, so x = 6

In a 2004 poll of 500 cell phone users conducted by the Yankee Group, 20% indicated that they had received commercial messages or ads on their cell phones. Is there sufficient evidence to conclude that the proportion of cell phone users who have received commercial messages or ads in 2004 was greater than the proportion of .13 reported for the previous year

Answers

Answer:44÷58+44

Step-by-step explanation:

Find the surface area of this cubiod

Answers

Answer:

surface area is 2(lb + bh + lh)

I think this is the right formula

Answer:

Total surface  area = 62 cm^2.

Step-by-step explanation:

There are 2 faces each of area 2 * 3 = 6, = 12 cm^2.

There are 2 faces each of area 10, = 20 cm^2.

There are 2 faces each of area 15, = 30 cm^2.

12 + 20 + 30 = 62 cm^2.

im giving brainliest to who ever needs it

Answers

Answer:

heck ya

Step-by-step explanation:

Hey, thanks for doing this.

Darryl deposits $1,500 into a savings account that has a simple interest rate of 2.7%.
Lori deposits $1,400 into a savings account that has a simple interest rate of 3.8%.
If no other transactions are made, who will have more money in their account after 10 years? How much more?

Answers

Answer:

12

Step-by-step explanation:

Other Questions
. I was lonely at first but after a time I got used to (have). To live in that rural area. Which of the following examples demonstrates behavior that is dysfunctional?Multiple ChoiceoLyla is a lesbian, but she wishes that she liked boys so that she could have a traditional family and her parents wouldn't worry so much about her.Anabeth is so afraid of snakes that she has difficulty going out and getting into her car to go to work in the morning because she fears that there maybe a snake on the path to her car. She is running out of sick days.Michael likes to work out. He exercises every day. He has missed out on "get togethers" with friends, potential dates, and family events because oftime with his trainerCortney has tattoos all over her body. She has a total of 12 plercings, 6 of which are in her face. Her look has cost her several jobs becauseemployers have said that customers find her "menacing."< Prev3 45of 5 !!!Next > Sperm cells have a whip like ____ to move them through a liquid. 1) Which multiplication expression is equivalent to-8 + (-8) + (-8) + (-8)? Which type of credit involves a set limit based on what a consumer pays up front? loans installment credit secured credit cards unsecured credit cards. Name the following Type 1 compounds:1. Naci2. KI3. Cas4. CsBr5. Mgo6. CSF7. AICI:8. Mg29. Rb2010.Sr1211.KAS What did Ireland trade in 1900's? Where in the body did plato believe the 'mind' was located? quizlet. What was John Hancock's role in the war? when convicted of multiple crimes, what kind of sentences must be served separately? the fijian dollar is currently trading for AUD 2.55. if the interest rate in australia is 5.5% and the interest rate in New Zealand is 6.5% what would be the one year forward exchange rate 2. what are skeletal muscles responsible for moving? In one day a museum collected $1590 from 321 people. The price of admission is $6 for an adult and $4 for a child. How many adults and how many children were admitted to the museum?I NEED IN STEP BY STEP SO I CAN UNDERSTAND!!!! Why did Margrot's family consider going back to Earth? PLEASE HELP POR FAVOR SOMEONE IM DESPERATE tHIS IS DUE IN THE mORiNG! will give brainiest pls help! Which of these people were at the bottom of the social pyramid?A. ScribesB. CraftsmenC. FarmersD. Doctors Lilly wants to plant grass around their rectangular garden they have 28 meters of grass to go around the garden and they need to use it all pick two different dimensions in which they can do to construct the garden here are the choices you can pick 9x10 2x12 10x11 dimension 2 10x4 13x7 51x14 what garden size should Lilly choose if they want to grow the greatest amount of Brussel sprouts dimension 1 or dimension 2 where can i find premium air He gave the cashier $14.22 and received $2.63 in change. How much did the duffel bag cost?