Find the probability of each event

A bag contains nine real diamonds and
three fake diamonds. If nine diamonds are
picked from the bag at random, what is the
probability that all of them are real?

Answers

Answer 1

Answer: If replaced: 0.075 or 7.5%

If not replaced: 0.00455 or 0.455%

Step-by-step explanation:

If the diamonds are replaced after each draw:

The probability of drawing a real diamond is 9/12, found by making the numerator the number of real diamonds and adding the total number of diamonds to find the denominator. 3+9 = 12.

9/12 can be reduced to 3/4 by dividing the numerator and denominator by 3.

To find the probability of all 9 diamonds drawn being real, multiply 3/4 by itself 9 times. [tex]3^9[/tex] = 19683. [tex]4^9[/tex] = 262144. This creates a probability of 19683/262144. This cannot be reduced because there is no common factor. To express as a decimal, divide. 19683/262144 = 0.07508. To turn this into a percent, multiply by 100. 0.07508*100 = 7.508

If the diamonds are not replaced after each draw:

Start with the probability of drawing a single diamond: 9/12. After each draw, both the numerator and denominator have 1 subtracted from them, since there is 1 less real diamond and 1 less diamond in total. This will give you the equation (9/12)*(8/11)*(7/10)*(6/9)*(5/8)*(4/7)*(3/6)*(2/5)*(1/4). This equals 0.00455. To find as a percent, multiply by 100. 0.00455*100 = 0.455


Related Questions

PLS ANSWER ILL GIVE BRAINLIEST TO THE FASTEST ANSWER!!!!!!

Answers

Answer:

2 is right 4 and 7 that's all I know

Step-by-step explanation:

Work out, giving your answer in its simplest form​

Answers

Answer:

36

Step-by-step explanation:

⅔ ×3³/5

⅔×18/5

10×54 = 540

15 15

=36

The economy of Rayton can be described by the following statistics:

Current real GDP = $10,000

Full employment real GDP = $12,000

Tax revenue = $3000

Government transfer payments = $1000

Government spending = $3000

a) In what stage of the business cycle is the Rayton economy? Explain.

b) What is the current budget balance in Rayton? Show your work.

c) Senator Fullington, an influential politician in Rayton, has argued that the budget must be

balanced. How could this be accomplished? How would balancing the budget affect real GDP in

Rayton?

Answers

Based on the current real and the full employment real GDP, Rayton's economy is at a Recession stage.

The current budget balance in Rayton is -$1,000. The budget can be balanced by reducing government spending or increasing taxes. Both of these would decrease real GDP.

What does the economic data on GDP show?

The fact that the current real GDP is less than the full employment GDP shows that the nation is at a recession stage where it is underperforming.

What is the current budget balance?

This can be found as:

= Government revenue(taxes) - government spending

= 3,000 - 1,000 - 3,000

= -$4,000

In order to make a balanced budget where government revenue will equal government spending, the government either needs to reduce spending or increase revenue ( taxes ).

Increasing taxes or reducing spending, will lead to less money available for spending in the economy which will lead to a decrease in real GDP.

Find out more on government spending at https://brainly.com/question/25125137.

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Solve for x, then choose
the correct graph.
-2x + 5 > 11
(A)
o
-3
-2
o
(B)
-5 -4 -3 -2 1

Answers

Answer:

x=-3 and the graph is A since x>-3

35,000 divided by 120

Answers

Answer:

291.666666667

Step-by-step explanation:

Rounds to 291.7

Answer:

35000/120 = 291 and 2/3

Step-by-step explanation:

HELP PLEASE ILL GIVE THE BRAINLEST THING IF U DO QUICK

Answers

Answer:

8 units, 15 units, 17 units

Step-by-step explanation:

A triangle can only be considered a right triangle if it satisfies the Pythagorean Theorem.

Case 1 : Side lengths 8, 9, 15

8² + 9² = 15²64 + 81 = 225145 ≠ 225Not satisfied

Case 2 : Side lengths 8, 15, 17

8² + 15² = 17²64 + 225 = 289289 = 289Satisfies condition

Therefore, she should use the side lengths 8 units, 15 units, 17 units, as it forms a right triangle.

Is the graphed function linear?
O Yes, because each input value corresponds to
exactly one output value.
O Yes, because the outputs increase as the inputs
increase.
O No, because the graph is not continuous.
O No, because the curve indicates that the rate of
ET

Answers

Answer:

please provide an image of the graph

Jayson has $18.00. He buys a ticket to the baseball game for $10.75.
How much money does Jayson have left? Draw or use bills and coins to solve.
A. $12.25
B. $10.25
C. $8.25
D. $7.25

Answers

Answer:

$7.25 or D

Step-by-step explanation:

First take the 18$ and the $10.75 and subtract 10.75 from 18 and get $7.25

What are three ratios equivalent to 12:16

Answers

Answer:

[tex]\dfrac{6}{8}, ~ \dfrac 34, ~\dfrac{24}{32}[/tex]

Step-by-step explanation:

[tex]\dfrac{12}{16} = \dfrac{12 \times \tfrac 12}{16 \times \tfrac 12} = \dfrac{6}8\\\\\\\dfrac{12}{16} = \dfrac{12\times \tfrac 14}{16 \times \tfrac 14} = \dfrac 34\\\\\\\dfrac{12}{16} = \dfrac{12 \times 2}{16 \times 2} = \dfrac{24}{32}[/tex]

What is the value of x?

Answers

Answer: 44

Step-by-step explanation:

Please Help! The amount of money in an account may increase due to rising stock prices and decrease due to falling stock prices. Emerson is studying the change in the amount of money in two accounts, A and B, over time.

The amount f(x), in dollars, in account A after x years is represented by the function below:

f(x) = 1,264(1.09)x

Part A: Is the amount of money in account A increasing or decreasing and by what percentage per year? Justify your answer.

Part B: The table below shows the amount g(r), in dollars, of money in account B after r years.

r (number of years):
1
2
3
4
g(r) (amount in dollars):
1,375
1,512.50
1,663.75
1,830.13
Which account recorded a greater percentage change in amount of money over the previous year? Justify your answer.

Answers

Answer:

The account is decreasing at an annual rate rate of 8%.The account decreasing at annual rate of 10.00%

Account B is Recorded a greater percentage change in amount of money over the previous year.

______________ of rational numbers is distributive over addition of rational numbers.

Answers

Answer:

the multiplication of rational numbers is distributive over addition of rational numbers.

can someone help me here

NONSENSE=REPORT

topic: Inscribed Quadrilateral theorem in a Circle​

Answers

Answer:

Step-by-step explanation:

Problem 12

Comment

A cyclic quadrilateral (a 4 angled quadrilateral where all 4 corners touch the circumference of a circle), has the property that opposite angles add up to 180 degrees.

Formula

4x + 9 + 3x + 3 = 180                            Collect like terms

Solution

4x + 3x + 9 + 3 = 180                            Combine

7x + 12 = 180                                         Subtract 12 from both sides

7x + 12 -12 = 180 - 12                            Combine

7x = 168                                                Divide by 7

7x/7 = 168/7

x = 24

Answer

x = 24

Problem 13

Comment

Same comment as was given for problem 12

Formula

3x + 2 + 3x - 32 = 180              Collect like terms

Solution

3x + 3x +2 - 32 = 180               Combine

6x - 30 = 180                            Add 30 to both sides

6x -30+30 = 180 + 30

6x = 210                                   Divide by 6

6x/6 = 210/6

x = 35                            

Answer

x = 35

Hey there!


[QUESTION #12]
EQUATION: 4x + 9 + 3x + 3 = 180°

4x + 9 + 3x + 3 = 180°

COMBINE the LIKE TERMS

(4x + 3x) = (9 + 3) = 180°
4x + 3x + 9 + 3 = 180°

7x + 12 = 180°

SUBTRACT 12 to BOTH SIDES

7x + 12 - 12 = 180 - 12

SIMPLIFY IT!
7x = 180 - 12

7x = 168

DIVIDE 7 to BOTH SIDES

7x/7 = 168/7

SIMPLIFY IT!
x = 168/7

x = 24

Therefore, the answer should be:

x = 24

[QUESTION #13]

EQUATION: 3x + 2 + 3x - 32 = 180°

3x + 2 + 3x - 32 = 180°

COMBINE the LIKE TERMS

(3x + 3x) + (2 - 32) = 180°
3x + 3x + 2 - 32 = 180°

6x - 30 = 180°

ADD 30 to BOTH SIDES

6x - 30 + 30 = 180 + 30

SIMPLIFY IT!
6x = 180 + 30

6x = 210

DIVIDE 6 to BOTH SIDES

6x/6 = 210/6

SIMPLIFY IT!
x = 210/6

x = 35


Therefore, the answer should be:

x = 35



Good luck on your assignment & enjoy your day!



~Amphitrite1040:)

How many boxes of markers must be sold for the company’s income to equal the cost of production

Answers

c. 200

each box makes a profit of $2.50

500/2.5 = 200

Cost of a shirt: $14.95
Markup: 25%
Discount: 45%

Answers

Answer:

markup= 19.93 revenue, 4.98 gross profit

discount= $8.72

A rectangle has a length of 15.8 inches and a width of 11.9 inches. What is the area of the rectangle? Enter your answer as a decimal in the box. in²

Answers

Answer:

Hi, I belive your answer is 188.02

sorry if it is wrong

Here is how to get the answer which is 188.02; 11.9 x 15.8= 188.02in²

and here you go have a splendid day!

Step-by-step explanation:

Answer:

188.02

Step-by-step explanation:

Horst pulled pizza out of the oven and cut it into 4 equivalent pieces. He ate two of them. his sister came in and cut one of the remaining pieces into three smaller, equivalent pieces. She ate two of the small pieces.
A What fraction of the pizza did each of them eat?
B.What fraction of the pizza is left.?

Answers

Answer: Brother ate 1/2, sister ate 1/6

Pizza left 1/3

Step-by-step explanation:

The first person ate ½.

Sister cut ¼÷3 = ¼× ⅓= 1/12

She ate 2/12 = ⅙

Left 1/4 + 1/12 = 4/12 = 1/3

50 points please help

please explain your answer please ( such as formula n such )

Answers

Answer:

See below ~

Step-by-step explanation:

Part (a) :

Formula : Perimeter = 2 (Length + Width)⇒ 278 = 2(54 + Length)⇒ 139 = 54 + LengthLength = 139 - 54 = 85 m

Part (b) :

Formula : Area = Length × Width⇒ 8811 = 99 x Width⇒ Width = 8811/99Width = 89 cm

Answer:

(a) The length is 85 m.

(b) The width is 89 cm.

Step-by-step explanation:

(a)

Perimeter (P) formula using the length (L) and width (W) of a rectangle.

P = 2L + 2W

P = 278 m

W = 54 m

278 = 2L + 2(54)

2L + 108 = 278

2L = 170

L = 85

Answer: The length is 85 m.

(b)

Area (A) formula using the length (L) and width (W) of a rectangle.

A = LW

A = 8811 cm²

L = 99 cm

8811 = 99 × W

W = 8811/99

W = 89

Answer: The width is 89 cm.

This triangle can be called acute or _____________.
Question 1 options:

A: equilateral

B: isosceles

C: scalene

D: right

Answers

B: isosceles triangle
Because there are two equal sides

Answer:

B: isosceles

Step-by-step explanation:

Two angles of an isosceles acute triangle measure the same.

6. How many right angles does this shape have?

Answers

Answer:

none

Step-by-step explanation:

This shape has no right angles

There are 0 right angles in this shape

Find the equation of the tangent line to the curve y=

Answers

The equation of the tangent line to the given curve (which is parallel to line (2x−y+9=0) is y−2x−3=0.

What is the equation of tangent?

There are two important elements to finding an equation that defines a tangent line: its slope and its point of contact with a curve.

The equation of the given curve is;

[tex]\rm y=x^2-2x+7[/tex]

On differentiating with respect to x, we get:

dx/dy=2x−2

The equation of the line is;

2x−y+9=0

y=2x+9

The slope of the line =2

If a tangent is parallel to line 2x−y+9=0, then the slope of the tangent is equal to the slope of the line.

Therefore, we have:

2=2x−2

2x=4

x=2

Now, at x=2

y=22−2×2+7=7

Thus, the equation of the tangent passing through (2,7) is given by,

y−7=2(x−2)

y−2x−3=0

Hence, the equation of the tangent line to the given curve (which is parallel to line (2x−y+9=0) is y−2x−3=0.

Learn more about tangent here;

https://brainly.com/question/17576140

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picture of problem below

Answers

Answer:

umm soo yea first you figure out how to do the problem, second you do the problem then you get the answer

Step-by-step explanation:

ur welcome

help me, i really need this math question

Consider a triangle like the one below. Suppose that 50 , 30 , 73 and . (The figure is not drawn to scale.) Solve the triangle.
Carry your intermediate computations to at least four decimal places, and round your answers to the nearest tenth.

If there is more than one solution, use the button labeled "or".

Answers

Answer:

A=31.64 B= 18.34 C= 130.20

Step-by-step explanation:

calculating for A using cosine rule

50^2= 30^2+73^2-2×30×73CosA

2500= 900+5329-4380COSA

2500= 6329-4380COSA

2500-6329= -4380COSA

-3729= -4380COSA

COA= -3729/-4380

COSA= 0.8514

A=COS^-1(0.8514)

A= 31.64

calculating B using sinerule

sin 31.64/50= sinB/30

sinB = sin31.64×30/50

sinB = 0.3147

B = 18.34

calculating for C

31.46+18.34+C= 180

C= 180-49.8

C=130.20

The area of a parallelogram is 31. 5 ft2 and the height is 6. 3 ft. What is the length of the base? 36 ft 24 ft 10 ft 5 ft.

Answers

If the area of a parallelogram is given as with a height of , we can refer back to the equation for the area of a parallelogram: \displaystyle A= b \cdot h, where is height and is the length of the base.

Find the new dimensions of the figure given at right when it is enlarged by scale factor of 2.5 then find the perimeter and area of the original and enlarge it figure

Answers

The perimeter and area of the original are 20 ft and 23.5 square ft and the enlarged figure are50 ft and 146.875 square ft.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The figure is the combination of a triangle and a square.

The area of the original (A₀) figure will be

[tex]\rm A_o = \dfrac{1}{2} \times 3 \times 5 + 4 \times 4\\\\A_o = 23.5 \ ft^2[/tex]

The perimeter of the original figure (P₀) will be

[tex]\rm P_o = 3 + 5 + 4 + 4 + 4\\\\P_o = 20 \ ft[/tex]

The scale factor is 2.5.

Then the dimension of the triangle will be

h = 2.5 × 3 = 7.5 ft

b = 2.5 × 5 = 12.5 ft

Then the dimension of the square will be

a = 2.5 × 4

a = 10 ft

The area of the new figure will be

[tex]\rm A = \dfrac{1}{2} \times 7.5\times 12.5 + 10*10\\\\ A = 146.875 \ ft^2[/tex]

The perimeter of the new figure will be

[tex]\rm P= 7.5 + 12.5 + 10+ 10+ 10\\\\P = 50 \ ft[/tex]

More about the geometry link is given below.

https://brainly.com/question/7558603

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Answer:

To find the perimeter of an enlarged figure, you can multiply the original figure’s perimeter by the scale factor. You could also multiply each dimension of the original figure by the scale factor to find the dimensions of the enlarged figure, and then add to find the perimeter.

The volume inside a rectangular storage room is 2,070 cubic feet. The room is 9 feet high. Find the area of the floor.

Answers

Answer:

230

Step-by-step explanation:

V = Base x hight

2070 = Base x 9

Base = 2070/9

Base = 230

Area = base

Area = 230

please show work if possible

Answers

Step-by-step explanation:

Reflection in y-axis means g(x) = f(-x)

g(x) = - 3x + 7

PLEASE HELP ME FIND THE AREA AND CIRCUMFERENCE

Answers

A=32.2

C=20.11

see the step by step calculation attached..

Sam has a total of 58 DVD's and CD's. In the number of CD's is two more than three times the number of
DVD's, how many CD's does he have?
a) 42
b) 14
c) 44
d) 12

Answers

Answer: C 44

Step-by-step explanation:

CD is (3×14) + 2

How much numbers are on a number line?

Answers

Answer:

all real numbers, continuing forever in each direction, and also numbers that are between the integers

Answer:

10

Step-by-step explanation:

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