There is a bag filled with 2 blue, 4 red and 5 green marbles.
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting 2 different colours?

Answers

Answer 1

Answer:

Question:

A bag with 2 blue (B), 4 red (R) and 5 green (G) marbles (total 11 marbles).

Two are drawn at random without replacement.

Find probability of getting two marbles of same colour.

Solution:

We can get either 2B, 2R or 2G as successful outcomes.

To get two blue marbles (2B),

probability of the first one being blue = P(B)=2/11

probability of the second blue marble = P(-B)=1/10 (one left out of 10 left)

Probability that both are blue (use multiplication rule)

P(2B)=(2/11)(1/10)=2/110

Similarly, for two red marbles

P(2R)=(4/11)(3/10)=12/110

and for two green marbles

P(2G)=(5/11)(4/10)=20/110

Since all three events 2B, 2R and 2G are mutually exclusive, the probability

that any one can happen is the sum of the individual probabilities, thus

probability of getting two marbles of the same colour (without replacement)

=P(2B)+P(2R)+P(2G)

=2/110 + 12/110 + 20/110

=34/110

= 17/55

Step-by-step explanation:

Answer 2

4/11

hope this helps


Related Questions

solve for b 1.34 =-1.6b+1.5

Answers

Answer:

b=75/97

Step-by-step explanation:

Can someone help (Its a photo) ill give brain list

Answers

Answer:

this is the order

-14/5, -11/5, -3/2, -2/3, 6/5, 4/2, 11/5, 16/5

What is the value of x below? *
A diagram with line m parallel to line n is shown.

Answers

Answer:

Step-by-step explanation:

The sum of those two angles must be 180 degrees.

3x+10+80=180

3x+90=180

3x=90

x=30

ASAP PLEASE HELP

LOOK AT THE PICTURE

Answers

Answer:

Step-by-step explanation:

Sin(x) = opposite / hypotenuse.

opposite = 28  The opposite is not connected to the angle.

hypotenuse= 35

Sin(x) = 28/35 = 4/5

Cos(x) = adjacent / hypotenuse.

The adjacent side is part of the angle

adjacent = 21

hypotenuse = 35

Cos(x) = 21 / 35 = 3/5

Tan(x) = opposite / adjacent

opposite = 28

adjacent = 21

Tan(x) = 28/21

Tan(x) = 4/3

HELP ME ASAP 100 POINTS If the right triangular prism shown has a volume of 36 cubic centimetres, what is the height of the triangular base of the prism, H? A. 12 cm B. 2 cm C. 6 cm D. 4 cm

Answers

Answer:

substitute all given values in this formula v=base ×height

then height= base /volume

Step-by-step explanation:

Find the value of x. x =36 x =6 x = 97−−√ x = 97

Answers

Answer: 21

Step-by-step explanation:

Answer:

√97

Step-by-step explanation:

2) A circle has an area of 12ñ cm^2. Find its circumference. (Round your answer to the
nearest tenth.

Answers

Answer:

75.4

Step-by-step explanation:

Our area is divide the area by pi meaning 12 is our radius

to solve for circumference

we use

[tex]2[/tex]×[tex]\pi[/tex]×[tex]radius[/tex]

(2×3.14)×12=

6.28×12=

7.36

PLEASE HELP!!!fast!!!!!!

Answers

Answer:

The shoes now cost $5.60

Answer:

1.40

Step-by-step explanation:

100% = 3.50

To get to 60%, divide 100 by 1.6, so this is the scale factor.

3.50/1.6=2.1 (this we need to take away from og amount)

3.50-2.10= 1.40

(-7) - 12=

HELP ME PLEASEE​

Answers

Answer:

-19

Step-by-step explanation:

Step-by-step explanation:

this is the solution

I hope it helps

Expand and simplify the expressions using properties of operations. 8(3x - 7)

Answers

Answer:

8x10x

Step-by-step explanation:

Is the graph a linear function, no name and function, or relation (non-functioning)?

Answers

Answer:

no name and function

Step-by-step explanation:

pj is placing cans on a shelf. she makes a pattern that repeats after 4 cans. if pj repeats the problem, what will the 21th can look like

Answers

Answer:

the 3rd in the cycle

Step-by-step explanation:

Answer:

It was wrong bro

Step-by-step explanation:

In Cyprus City there are 12,000 adults. 7,500 of the adults in the town are registered voters. In a poll to predict who will be the next mayor, a statistician asks 500 registered voters who they plan on voting for mayor. How many people are in the population of registered voters? And how many people are in the sample taken by that statistician?

Answers

Answer:

Step-by-step explanation:

12

In a football drill, Ron is standing 30 yards directly east of John, and Bill is standing 40 yards directly north of John. If the football is thrown from Ron to Bill then Bill to John, how many yards did the football travel?​

Answers

Answer:

70 Yards.

Step-by-step explanation:

From Ron to Bill is 30 and from there to John adds 40 which equals 70

I might have done the math wrong, or got the whole thing wrong. Sorry if so.

The answer to your question is 70 yards

Write a linear equation in slope-intercept form with a slope of -5 and passes through the point (-1, -8).

Answers

Slope intercept form ( y = mx + b)

m is your slope
b is your y intercept

Substitute the point (-1 (x), -8 (y)) into the formula with your slope to find the y intercept

Y = mx + b
-8 = -5 (-1) + b
-8 (-5)= 5 (-5)+ b
-13 = b

So y = -5x -13 is your answer

I need the correct answer please to this pic
Will mark you brainliest for the correct answer
Need the answer asap!! Please!!!!!1

Answers

Answer:

False because both 2 and 8, and 3 and 5 are alternate interior angles

(5 + 42) ÷ 3 ● 6
I need the answer and Steps Plz

Answers

47/3 x6
Reduce
47x2
=
94

What’s the measure of E

Answers

Answer: 30 degrees

Step-by-step explanation:

Answer:

the answer is A.30 dgree

HELP FASTTT WILL MARK BRAINLIST⚠️⚠️
Which mapping diagram represents a function from xy?

Answers

Answer:

A

Step-by-step explanation:

For every input there can only be ONE output

The two triangles are similar.

What is the value of x?



Enter your answer in the box.

x =

Answers

Answer:

x = 10

Step-by-step explanation:

The ratio of corresponding sides of similar figures is same:

3x/20 = (4x + 2)/(20 + 8)3x/20 = (2x + 1) / 143x(14) = (2x + 1)(20)42x = 40x + 202x = 20x = 10

Answer: x=10

Step-by-step explanation: correct test results

a line through (2, 15) and (6, 7)​

Answers

Answer:

y = -2x + 19

Step-by-step explanation:

Let the equation of the line is y = mx + b

Here, m = slope of the line

          b = y - intercept

slope of a line passing through (x₁, y₁) and (x₂, y₂) is given by

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

slope of line passing through (2, 15) and (6, 7) will be

[tex]m=\frac{15-7}{2-6}[/tex]

    = (-2)

Equation of the line will be,

   y = -2x + b

Since line passes through point (2, 15)

15 = -2 (2) + b

b = 15 + 4

b = 19

Therefore, equation will be,

y = -2x + 19

What would y be for month 1, x

Answers

Answer:

Um, maybe 21.5?

Step-by-step explanation:

43/2 = 21.5, so maybe

1 = 21.5

Try 21.5 Im not sure if this is correct tho

what strategy can be used to transform a quadratic function in vertex form to standard form

Answers

Hello, I Am BrotherEye

Answer:

This Transparent inquisition can be solved Below

Use transformations to graph a quadratic function in vertex form. A quadratic function in standard form, f(x) = ax² + bx + c, can be changed into vertex form by completing the square. The vertex form of a quadratic function is f(x) = a(x – 5)2 + k, where the vertex of the function is (h, k).

Step-by-step explanation:

Vertex form to standard form converter

Write the parabola equation in the vertex form: y = a*(x-h)² + k ;

Expand the expression in the bracket: y = a*(x² - 2*h*x + h²) + k ;

Multiply the terms in the parenthesis by a : y = a*x² - 2*a*h*x + a*h² + k ;

Best Of Luck

~

BrotherEye

someone help!!!
-16x³y+2x³y-x³y

Answers

-16x^3y+2x^3y-x^3y= 15x^3y

Answer:

- 15x^{3} y

Step-by-step explanation:

[tex] - 15x ^{3} y[/tex]

[tex] - 16x^{3} y \: + 2x ^{3} y \: - x ^{3} y \\ \\ - 16x ^{3} y + x^{3} y \: = \: - 15x^{3} y[/tex]

According to the weather channel, the chance of rain on Tuesday, February 23rd is 6%. It's complement is %.

Answers

Answer:

It's complement is 94%.

Step-by-step explanation:

Complement of a percentage:

The complement of a percentage is 100% subtracted by this percentage.

In this question:

Percentage of 6% for probability of rain.

So the complement, that is, the probability of not raining, is:

100 - 6 = 94%.

math, two questions I need help . look at the pic

Answers

Answeer

scan it with photo math it works

Step-by-step explanation:

A pair of sneakers that normally cost $120 have their price reduced by 25%.
What is the sale price of the sneakers?
The sales price of the sneakers is $

Answers

Answer:

$90.00

Step-by-step explanation:

120.00 x 25% = 30.00

120.00 - 30.00 = $90.00

Quick please
-4 + x = 3

Answers

The answer would be x= 7

Simply each expression completely and you can use the power to power rule to solve this

Answers

Answer:

c = 240

Step-by-step explanation:

Using the rule of exponents

[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]

Then

[tex](a^{40}) ^{6}[/tex]

= [tex]a^{40(6)}[/tex] = [tex]a^{240}[/tex]

What is the classification for this polynomial? 6xyz + xy Click on the correct answer. monomial binomial trinomial​

Answers

Answer:

Binomial

Step-by-step explanation:

the polynomial has two terms 6xyz and  xy

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