Can anyone help me out with permutations and combinations. I really need help. A Levels​

Answers

Answer 1

Answer:

la respuesta que buscas es bastante simple pero no lo sé

Step-by-step explanation:


Related Questions

Hello! I was trying to Do 69x24 but it is sadly not giving helpful tips so I was wondering if you can help me step by step?​

Answers

the answer is 1,656 .

a profit of 24% was made wheb a book was sold for birr 34% find the selling price that would have given a profit 28%​

Answers

Answer:

$35.20

Step-by-step explanation:

Given that the profit of 24% was made on $34.10,

And Profit = Selling price - cost price,

Where profit is 24%, and selling price is $34.10, cost price = ?

Then, to find the cost price (z):

Assume the cost price be a 100% and the selling price of $34.10 be 124%

Hence, we have

$34.10 = 124%

z = 100%

Substitue

=> z / 34.10 = 100% / 124 %

=> 124z = 34.10 (100)

124z = 3410

Divide both sides by the coefficient of z which is 124

z = $27.50

Therefore, to find the selling price for a profit of 28%

We have 28% of 27.5 = 7.70

With equation of Profit = Selling price - cost price

We have 7.70 = Selling price - 27.50

Removing 7.7 from both sides

We have, Selling price = 27.50 + 7.70

=> Selling price = $35.20

Hence, the selling prices for a profit of 28% is $35.20

Write 11/8 as a mixed fraction

Answers

Answer:

1 3/8

Step-by-step explanation:

Since 11 is over 8 that means you already have a whole number so you just add the 3 and you get 1 3/8

To check just in case you just multiply the whole number and denominator and then add the numerator.

c2 - 6c-5
Evaluate the expression when c = -2

Answers

-2(2)-6(-2)-5
-4+12-5
Answer is 3

Can you simplify 41/24

Answers

Answer:

1 17/24

Step-by-step explanation:

If you want to turn it into a mixed number, divide.

24 goes into 41 1 time

41-24=17

1 17/24

Evaluate the expression where x=5 and y =2

Answers

Answer:

6

Step-by-step explanation:

The population of a village is in the following ratios.
women: children = 13:4
men: children = 7:3
a) Find the ratio women : men.
Give your answer in its simplest form.
women : men

Answers

Answer:

13:7

Step-by-step explanation:

We see that the ratio from women:children is 13:4.

Therefore, the number of women is 13.

In the ratio comparing men to children we see that it is 7:3.

Therefore, the number of men is 7.

Now we need to compare the number of women to the number of men which is 13:7.

What is m<4? Pls help me

Answers

Answer:

65°

Step-by-step explanation:

180-115=65

How is the expression “the product of six and eight added to eleven” written?

Answers

Answer:

(5*8)+11 is the expression

Answer:

(6x8)+11

Step-by-step explanation:

Mr. Moretti is making welcome bags to give to the 18 students in his homeroom on the first day of school. He puts m mechanical pencils in each bag. He puts twice as many regular pencils in each bag. What is the total number of pencils that Mr. Moretti gives to his students if he puts 3 mechanical pencils in each bag?M

Answers

Answer:

The total number of pencils that Mr. Moretti gives to his is 162.

Step-by-step explanation:

He puts 3 mechanincal pencils in each bag.

In each bag, there is also twice as many regular pencils, that is, 3*2 = 6 regular pencils.

So in each bag, 3 + 6 = 9 pencils.

What is the total number of pencils that Mr. Moretti gives to his students if he puts 3 mechanical pencils in each bag?

18 students, and each gets 9 pencils.

18*9 = 162

The total number of pencils that Mr. Moretti gives to his is 162.

Answer:

162 pencils

Step-by-step explanation:

i did the i ready lesson!

need help geometry question central angles and arcs plsss

Answers

Measure of angle HFG is 250°

A company receives shipments from two factories. Depending on the size of the order, a shipment can be in 1 box for a small order, 2 boxes for a medium order, 3 boxes for a large order. The company has two different suppliers. Factory Q is 60 miles from the company. Factory R is 180 miles from the company. An experiment consists of monitoring a shipment and observing B, the number of boxes, and M, the number of miles the shipment travels. The following probabity model describes the experiment:

Factory Q Factory R
small order 0.3 0.2
medium order 0.1 0.2
large order 0.1 0.1

a. Find PB M(b, m), the joint PMF of the number of boxes and the distance.
b. What is E[B], the expected number of boxes?
c. Are B and M independent?

Answers

Answer:

A) PB M(b, m), we have;

b = 1

b = 2

b = 3

B) E(B) = 1.7

C) No they are not independent

Step-by-step explanation:

A) We are told that a shipment can be in 1 box for a small order, 2 boxes for a medium order, 3 boxes for a large order. Thus;

For PB M(b, m), we have;

b = 1

b = 2

b = 3

B) Factory Q is 60 miles from the company. Thus, under factory Q in the table, m = 60

Factory R is 180 miles from the company. Thus under factory R in the table, m = 180

Now;

P_B (b) for b = 1 which is small order is;

P_B (b) = 0.3 + 0.2 = 0.5

P_B (b) for b = 2 which is medium order is;

P_B (b) = 0.1 + 0.2 = 0.3

P_B (b) for b = 3 which is large order is;

P_B (b) = 0.1 + 0.1 = 0.2

Thus;

E(B) = Σb•P_B (b) = (1 × 0.5) + (2 × 0.3) + (3 × 0.2)

E(B) = 0.5 + 0.6 + 0.6

E(B) = 1.7

C) No, they are not independent. This is because from the table we are given, P_B,M at b = 1 and m = 60 is given as 0.3.

Whereas, for B and M to be independent, P_B,M at b = 1 and m = 60 has to be equal to (P_M(m) under m = 0.3) multiplied by P_B(b) for b = 1.

Instead what we have is P_M(m) under m = 0.3 as; 0.3 + 0.1 + 0.1 = 0.5. Which means (P_M(m) under m = 0.3) multiplied by P_B(b) for b = 1 gives;

0.5 × 0.5 = 0.25 which is not equal to P_B,M = 0.3 at b = 1 and m = 60

Plzz help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

400+80x and 80(5+x)

Step-by-step explanation:

20 is 16% of what number?

Answers

It is 80 !!!!!!! That’s the number

Answer:

80-

Step-by-step explanation:

20 percent (calculated percentage %) of what number equals 16? . well ofc as i said- its 80

What happen when you multiply a number by it's reciprocal?

Answers

Answer:

When you multiply the number by its reciprocal the numerator of the one becomes the denominator of the other and is equals to 1 .

Shirts are on sale for $12 at a clothing store. How many shirts can you buy with $48?

Answers

Answer:

4 if no tax is included because 4 times 12 equals 48

hope this helps

Step-by-step explanation:

Answer:

4 shirts in total,

12x4=48

Step-by-step explanation:

Hope this helps!

HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

B or 137.5.  :)

B or 137.5
.........

If f ( x ) = 6 x + 54 with f ( x ) = y , what is the vertical intercept?

Answers

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Answer:

x - intercept(s) : ( -9, 0 )

y - intercept(s) : ( 0, 54 )

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Help im giving brainliest

Answers

Answer:

Help with what ?

Answer:

can I have it pls I am begging you oh and there is no question so I cannot answer anything

Step-by-step explanation:

HELP PLEASE DUE IN 4 MINUTES

Answers

The answer would be B. Hope this helps.

Keisha is babysitting at $8 per hour to earn money for a car. So far she has saved $1300. The car that Keisha wants to buy costs at least $5440. Write and solve an inequality to determine the amount Keisha still needs to earn for the car.

Answers

Answer:

$4100

Step-by-step explanation:

For Kaisha to get this car we have these information available

Amount saved = $1300

The cost of the car = $5400

Let The amount left to complete the car = k

We have this equation

K + $1300 = $5400

K = 5400 - 1300

K = 4100

Therefore Kaisha still needs to earn an additional amount of $4100 for the total amount of the car to be completed.

Which regression equation best fits these data?
х
y
1-2, 16).16)
15
-5
11
21.15)
-3
14
.6314
.(-5.11
10
(372)
- 2
16
4,9)
-1
16
1
15
3
12
6
4.
9
5
6
O A. y = -0.59x + 12.5
B. y = 0.30x2 + 0.48x + 15.83
C. y = 12.00 0.94%

Answers

Answer:

a will be the correct answer bro be sure

The Regression equation best fits these data is ŷ = -0.58939x + 12.52235

We have the table as from which can be calculated as

Sum of X = 2

Sum of Y = 99

Mean X = 0.25

Mean Y = 12.375

Sum of squares (S[tex]S_x[/tex]) = 89.5

Sum of products (SP) = -52.75

As, Regression Equation

ŷ = b x + a

where b = SP/S[tex]S_x[/tex]

b = -52.75/89.5

b = -0.58939

and, a = MY - b MX

a = 12.38 - (-0.59)(0.25)

a = 12.52235

So, the required equation is ŷ = -0.58939x + 12.52235

Learn more about Regression line here:

https://brainly.com/question/7656407

#SPJ7

-7 2/3+(-5 1/2) +8 3/4=

Answers

Exact Form : -53/12
Decimal Form : -4.416
Mixed numbers : -4 5/12

Step-by-step explanation:

Please refer to the attachment

Answer this correctly and I will give brainslist + 10 points from question (:

Answers

Answer:

a

Step-by-step explanation:

Determine the mean of given data
-7, 6, -6,5, -5, -11

Answers

Answer: The mean is -11

Answer:

mean= average  -3

Step-by-step explanation:  Add all numbers (6+5-5-11-6-7) you will get -18.  Divide by the number of numbers you have.  You have 6 numbers so divide by 6 and get -3 the average.

Use the Distributive Property to
REWRITE 11(x + 5)

Answers

Answer:

11X+55

Step-by-step explanation:

Multiplicacion

The members of a youth dance company were asked their favorite ice cream flavors for
an upcoming party to celebrate a competition win. The results are displayed in the bar
graph below.
Based on the information in the graph, which of the following statements are true?
Choose one. 10 points
Favorite Ice Cream Flavors
10
8
6
Amount
4
2
0
Vanilla - 6
Strawberry - 5
Cookies & Cream - 9
Butter pecan - 3
Chocolate - 2

Answers

Answer:

2

Step-by-step explanation:

If AB is parallel to CD and the slope of AB is -3, what is the slope of CD?

Answers

The slow would have to be the same, so it’s also -3

What is the domain and range as an inequality and if you could explain how you got it that would be great

Answers

Answer:

As per the graph, the function starts at point (0, -2) point it self not included.

The graph is extended down and right, so the given point is maximum of the function.

The domain:

x > 0 or x = (0, +∞)

The range:

y < -2 or (- ∞, -2)

Range

Set of y values

(-oo,-2)

As -2 is not included (open dot)

Domain

Set of x values

(0,oo)

0 is not included (open dot)

find the product (ab-3)^2

Answers

Answer:

a^2b^2 -6ab + 9

Step-by-step explanation:

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