How to find number of combinations.

Answers

Answer 1

Answer: Remember, the formula to calculate combinations is nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time.

Step-by-step explanation:


Related Questions

A 10-pound bag of grass seed will cover an area of about 4000 square feet. The relationship between pounds (p) of grass seed and area (a) can be written as a = kp. What is the value of k? what does it represent

Answers

Answer:

it represent the 10 pound and 4000 multiply = ans

2x+y=10

x-intercept?______
y-intercept?______

have to show work

Answers

Answer:

y = 10-2x

Step-by-step explanation:

2x+y=10

y=10-2x

pls help!

Manny charges $1.25 for a cup of lemonade at the lemonade stand. He sells 9 cups. How much money does Manny collect?​

Answers

Answer:

$11.25

Step-by-step explanation:

1.25 × 9 = 11.25

Answer:

$11.25

Step-by-step explanation:

Can someone help me please find the perimeter

Answers

Answer:

8x + 9

Step-by-step explanation:

Perimeter is the sum of all sides:

2x + x+8 + 5x+1 = 8x + 9

Help finding surface area

Answers

Answer:

471.23 km²

Step-by-step explanation:

This is a cylinder.

Here's the formula to the the surface area of a cylinder.

[tex]Surface\:\:Area\:\:\:= 2\pi r(r+h)[/tex]

They have given the the diameter of the circle .

There fore we have to find the radius .

d = 2 r

10 = 2 r

5 km = r

Let's find the Surface area now.

[tex]2\pi r(r+h)[/tex]

[tex]2 *\pi *5(5+10)[/tex]

[tex]10\pi *15[/tex]

[tex]150 \pi[/tex]

471.23 km²

Hope this helps you.

Let me know if you have any other questions :-)

Can someone help me with math pls no links pls I lost a lot of points because someone put a link . THANK YOU

Answers

Answer:

15

Explanation:

The common denominator for 2/3 and 3/5

Answer:

The answer is 15.

LCD = 15

The approximate areas of Georgia and South Carolina are listed below:
Georgia: 1.54\times 10^{5}1.54×10^5
square kilometers
South Carolina: 8.29\times 10^{4}8.29×10^4
square kilometers
How many times larger is Georgia than South Carolina? Write your answer in standard notation, rounding to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

Who is known as "The Father of Genetics"? and List as many facts as you can about him and his accomplishments.

Answers

Mendel know as Father of genetics

he worked on pea plant for seven years and give two laws

law of independent assortment and law of dominance

Answer these question

Answers

c = 1 > 7 =

According to very reliable sources.

t > 28

if you multiply 7•4 then you get 28 (and photo math agrees)

4) Mason paid $54 for 9 lbs. of steak, and
Isabella paid $72 for 6 lbs. Which person
paid a greater ratio of dollars/lbs. of steak?

Answers

Answer:

Isabella paid more.

Step-by-step explanation:

$72/6 = $12.67

She paid twelve dollars for 1 lb of steak while Mason paid 6 dollars for 1 lb.

Answer:

Isabella has a greater ratio of dollars/lbs

Step-by-step explanation:

Mason paid $6/1 lb

Isabella paid $12/1 lb

Hope this helps!

Hurry for Brainlist =Accurate Answer

Answers

Step-by-step explanation:

the second line has to be parallel (but not identical), so that the 2 lines do not cross each other, do not have any point in common.

that means it must have the same slope but a different y-intercept.

the line in the graph goes through the origin (0, 0), which makes the y-intercept = 0 (the y value when x = 0).

and we see that the points with integer coordinates seem to be e.g. (3, -2).

so, for the slope (y difference / x difference between 2 points) we use this point and the origin.

x changes by +3 (from 0 to 3).

y changes by -2 (from 0 to -2).

so, the slope is -2/3. and it is always the factor of x.

let's look at the answer options :

2x + 3y = 0

3y = -2x

y = (-2/3)x

this is the identical line, so it is wrong !

2x + 3y = 6

3y = -2x + 6

y = (-2/3)x + 2

the same slope and different y-intercept.

this is the correct solution !

2x - 3y = 9

-3y = -2x + 9

y = (2/3)x - 3

wrong slope. so it is wrong !

y = 3x + 2

wrong slope. so it is wrong !

Help please Ill give brainlest!

Answers

Answer:

1. A.

2. C.

Step-by-step explanation:

1. these angles are corresponding because if the line passes through parallel lines 1-6, 2-5,3-7,4-8 will all be corresponding angles

2.

Since 2 and 5 are corresponding angles they will have the same degree measures

Please answer the question which is attached.

Answers

A. X is a variable, not a number on the coordinate plane.

2. Charges imposed on citizens by local, state, and federal governments are called?
A.)debts
B.)income
C.) taxes
D.)tips

Answers

Answer:

Compulsory charges imposed on citizens by local, state, and the federal government. Employers withholding allowance certificate provides the percentage of gross to be withheld for taxes. It is a law for employers to withhold taxes from wages.

If 3x + 6 = 21, what does x + 2x plus 2 equal?

Answers

Answer:

x+2x+2=17

Step-by-step explanation:

I'm assuming that's what you're asking, so here is the answer explanation.

3x+6=21

3x=15

Hence, x=5

Apply x=5 to x+2x=2

5+10+2

=17

According to the law of demand, when the price of a good or service increases the quantity demanded

A stops

B. increases

C. decreases

D. is unchanged

Answers

It increases because when more quantity is demanded the prices increase.

Answer:

its C

Step-by-step explanation:

b is wrong

Help. What is 90% decreased by 10% :/

Is it 81?

Answers

You're correct the answer is 81%.


New value =

90 - Percentage decrease =

90 - (10% × 90) =

90 - 10% × 90 =

(1 - 10%) × 90 =

(100% - 10%) × 90 =

90% × 90 =

90 ÷ 100 × 90 =

90 × 90 ÷ 100 =

8,100 ÷ 100 =

81

Hope this helps :)

if x/2=6.5 what is x

Answers

Answer: 13

Step-by-step explanation: 6.5 x 2=13

Answer:

x=13

Step-by-step explanation:

13/2=6.5

how what is 3/56 as a percentage​

Answers

5.4% rounded up to 1 decimal point

Answer:

5.4% rounded to the tenths place.

Reasoning:

To convert 3/56 to a percentage, multiply the decimal version of 3/56 by 100.

Estimated, 3/56 as a percentage is 5.4%

Evaluate the equation. d - 4.12 = 12.8
A) d = 8.58
B) d = 8.68
C) d = 16.92
D) d = 17.02​

Answers

The answer is (C)d=16.92

Answer: i think its D

Step-by-step explanation:

How do you graph an equation using x and y intercepts.

Answers

Answer:

I'm going to use the following as an example.

[tex]2x + 4y = 8[/tex]

To find the y-intercept, set x equal to 0 then solve for y.

[tex]2(0) + 4y = 8[/tex]

two times zero is zero, so we have the following equation.

[tex]4y = 8[/tex]

Solve for y

[tex] \frac{4y}{4} = \frac{8}{4} \\ y = 2[/tex]

Your first point you will graph is (0, 2).

Now solve for the x intercept. To do this, set y = 0.

[tex]2x + 4(0) = 8[/tex]

4(0) = 0, so you can remove it, and solve for x.

[tex]2x = 8[/tex]

[tex] \frac{2x}{2} = \frac{8}{2} \\ x = 4[/tex]

Now the next point you have is (4, 0). plot that point. Connect the two points with a line and you are done.

How to do the 9 multiplication trick.

Answers

Answer:

0123456789

9876543210

Step-by-step explanation:

09

18

27

36

45

54

63

72

81

90

Answer:

Step-by-step explanation:

for each 9 you add, take away 1 from the first number and add 10, like

81

72

63

52

41

32

23

18

9

make x the subject of the formula
y=a √x

Answers

Answer:

Y^2/a = x

Step-by-step explanation:

Y = a sqr X

Square both sides

Y^2 = a * x

Divide a

Y^2/a = x

Answer:

[tex] x = \dfrac{y^2}{a^2} [/tex]

Step-by-step explanation:

[tex] y = a\sqrt{x} [/tex]

Square both sides.

[tex] (y)^2 = (a\sqrt{x})^2 [/tex]

[tex] y^2 = a^2(\sqrt{x})^2 [/tex]

[tex] y^2 = a^2x [/tex]

Divide both sides by a².

[tex] \dfrac{y^2}{a^2} = x [/tex]

Switch sides.

[tex] x = \dfrac{y^2}{a^2} [/tex]

Rewrite x2 - 8x + 13 = 0 in the form (x -a)2= b, where a and b are integers, to determine the a and b values.
O a = 4 and b = 3
O a = 3 and b = 2
O a= 2 and b = 1
O a = 1 and b = 4

Answers

Answer:

a =4 and b= 3

Step-by-step explanation:

Stare at it for a bit. You have the squre of x, then(ignoring the minus sign) 2 times x times 4. What's left is the square of 4, which is 16; you have 13, you are 3 short. Let's add them to both sides:

[tex]x^2-8x+13+3=3 \rightarrow x^2-8x+16 = 3\\(x-4)^2 = 3[/tex]

so a =4 and b= 3

Does anyone want to play prodigy with me? if so meet at Town Square in Lamplight Town in Sapphire World. I'm Serenity Nearshadow in that game. PLEASE!

Answers

Answer:

why did you need to play with you are you board of playing then stop playing game

What’s that. Anyways thanks for 5 points.

What number president was john quincy adams.

Answers

Answer:

6

Step-by-step explanation:

john quincy adams was the 6th president

Whats the value of 6 in 1.267

Answers

Answer:

hundredths place

Step-by-step explanation:

Hundreds place, easy

Resolver para y. 3xy=12*​

Answers

Answer: 4y-1

Step-by-step explanation:

Simplifying 3xy = 12 Solving 3xy = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '3y'. x = 4y-1 Simplifying x = 4y-1

Hope this helps

Please complete this question,
20 points will be given

Answers

You mean 10 points will be given

Find the perimeter. Simplify your answer.

Answers

Answer:

Step-by-step explanation:

let :

a= 8u+1

b=8u+1

c=5

perimeter=a+b+c

perimeter=8u+1+8u+1+5

perimeter=16u+7 units

Answer:

16u+7

Step-by-step explanation:

isosceles triangle has two sides equal. 2(one of the sides)+the base(5)

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