There are 9 counters in a bag.
7 of the counters are green.
2 of the counters are blue.
Ria takes at random two counters from the bag.
Work out the probability that Ria takes one counter of each colour.
You must show your working.

Please show the full working out so I know how to get full marks in future I’ll give brainiest

Answers

Answer 1

Answer:

7/18

Step-by-step explanation:

Probability is the ratio of the number of possible outcomes to the number of total outcomes.

Given that there are 9 counters in a bag, 7 are green while 2 are blue.

the probability of picking at random a

Green counter = 7/9

Blue counter = 2/9

The probability that Ria takes one counter of each colour if 2 counter are picked as random is Green and Blue or Blue and Green

This is

=7/9 * 2/8 + 2/9 * 7/8

Recall that when a counter is picked the number of that ball available reduces and so does the total number of counter

=14/72 + 14/72

= 28/72

= 7/18


Related Questions

a population of 100,000 decreases by 6% each year. write a graph to explain that

Answers

Answer:

Step-by-step explanation:

Your graph equation is going to be y = 100,000 - .06x

So basically the graph is easy to explain it is 3.45 by T

hello please help me, i’m stuck on this one :(

Answers

Answer:

The second option, B.

[tex](x| -3< x \leq 2)[/tex]

Explanation:

Since the point on -3 is hollow, this means that -3 is not included in the equation. Therefore, -3 < x. Since the point on 2 is filled, this means that 2 is a valid number that is included in the equation. Therefore, [tex]x\leq 2[/tex].

what is the solution of the equation 4x + 12 = 48

Answers

Answer:

x =9

Step-by-step explanation:

48-12=36

4x=36

divide by 4

x=9

Answer: A) x=9

48-12=36.

36/4=9

More detailed explanation:

4x+12=48

   -12    -12

    4x = 36

    /4     /4

    x   =    9

Step-by-step explanation:

subtract 12 from both sides , then divide both sides by 4

What has more volume? Shoe box, dog, airplane, or desk.

Answers

Answer:

Airplane

Step-by-step explanation:

Answer:

Airplane

Step-by-step explanation:

Volume is the amount of mass an object has. Using common sense you can easily identify an airplane as the largest,

Work out the volume of the cone give the answer to 3 significant figures plz help

Answers

Answer:

i think the answer is 1010

Step-by-step explanation:

1/3 × 3.142 × 8^2 × 15

PLEASE HELO FAST I HAVE TO SUBMIT SOON

Answers

Answer:

113.4 = x(18)

x = 6.3

Step-by-step explanation:

Wouldn’t you subtract 18 from 113.4 to get your answer?

49^x/4-5 = 343^x/3 what does x equal

Answers

Answer 8 here is why because 34 x8 is 184

I will give brainliest if correct !!

Answers

Answer:

is it B

Step-by-step explanation:

PLEASE HELP WHATS THE ANSWER

Answers

Answer:

2,744

Step-by-step explanation:

[tex]C = 400 \sqrt[3]{n} + 200 \\ \\ plug \: C =5800 \\ \\ 5800 = 400 \sqrt[3]{n} + 200 \\ \\ 5800 - 200 = 400 \sqrt[3]{n} \\ \\ 5600 = 400 \sqrt[3]{n} \\ \\ \frac{5600}{400} = \sqrt[3]{n} \\ \\ 14 = \sqrt[3]{n} \\ \\ {(14) }^{3} = {(\sqrt[3]{n})}^{3} \\ (cubing\: both\: sides) \\\\ 2,744 = n \\ \\ n = 2,744[/tex]

How many solutions does the equation 3x - 7 = 4 + 6 + 4x have?
OTwo
O Zero
O Infinitely many
O One

Answers

Answer:

one

Step-by-step explanation:

3x-7=4+6+4x

3x=7+4+6+4x

3x=17+4x

3x-4x=17

-x=17

x=-17

What is the equation of the line l in the figure above?

Answers

it’s the 5th option

Dawn is ordering 1 veggie sandwich for every 3 ham sandwiches. She needs 12 sandwiches in all. Veggie sandwiches cost 4.00 dollars each and ham sandwiches cost 4.50 each. How many will dawn spend on sandwiches?

Answers

Answer:

$52.50

Step-by-step explanation:

Lets use V for Veggie, and H for Ham.

V=4

H=4.50

She is getting 12 sandwiches, and Every 3 H, she buys one V.

So, the order of her buying the sandwiches would be:

H H H V H H H V H H H V

9 H and 3 V

9*H=40.5

3*V=12

40.5+12= $52.50

The total cost of all the sandwiches is given by the equation A = $ 52.50

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total cost of 12 sandwiches be A

Now , the equation will be

For every 1 veggie sandwich 3 ham sandwiches are ordered by Dawn

The cost of veggie sandwich = $ 4.00

The cost of ham sandwich = $ 4.50

So ,

Let the veggie sandwich be = x

Let the ham sandwich be = y

The total number of sandwiches = 12

So , x + 3y = 12

when x = 3 and y = 3

3 + 3 ( 3 ) = 12

3 + 9 = 12

12 = 12

Therefore , the number of veggie sandwich = 3

The number of ham sandwich = 9

And , the cost of 3 veggie sandwich = 3 x 4.00

The cost of 3 veggie sandwich = $ 12

The cost of 9 ham sandwich is = 9 x $ 4.50

The cost of 9 ham sandwich is = $ 40.5

The total cost of 12 sandwich A = cost of 3 veggie sandwich + cost of 9 ham sandwich

Substituting the values in the equation , we get

The total cost of 12 sandwich A = 12 + 40.50

The total cost of 12 sandwich A = $ 52.50

Therefore , the value of A is $ 52.50

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ5

Can someone help ? I dont understand this

Answers

Answer:

4854

Step-by-step explanation:

2=434344=3

[46664792)

Answer:

31°

Step-by-step explanation:

The angle 59° will be equal to the angle c in triangle ABC.

Angle B will be 90°

Angle A + Angle B + Angle C = 180° (ASP)

Angle A + 90° + 59 ° = 180 °

Angle A = 180° - 90° - 59°

Angle A = 31°

Angle A = x

31° = x

Factor X^2-13x+22 help pls

Answers

Answer:

(x-2)(x-11)

Step-by-step explanation:

Answer:

(x - 2)(x - 11)

Step-by-step explanation:

We have a polynomial and are asked to factor it.

Polynomial : x^2 - 13x + 22

Usually a trick I follow when factoring is that for c (in this case 22). You need to find two numbers that will multiply to it. And for b (in this case -13) you will need to find two numbers that will add to it, the same numbers you multipled for c.

So

x * y = 22

x + y = -13

These two numbers are -11 and -2.

I NEED HELP PLZZ :((

5/2 ÷ 3/4
pls help me solve this

Answers

Answer:

3 1/3 Because When we divide two fractions, such as 5/2 ÷ 3/4, we flip the second fraction and then we simply multiply the numerators with each other and the denominator with each other.

Step-by-step explanation:

remember to simplify if ever possible!:D

soooo

in order to do this both fractions has to have the same denominator

so you find the CMD (common denominator)

which is 4

so you'd only change 5/2

5/2 * 2/2 to make it 10/4

now both fractions have the same denominator

you do keep change flip

you keep 10/4

change division to multiplication

and flip 3/4 TO 4/3

which would equal

10/4 * 4/3= 40/12

40/12

and you divide it with long division

you get 3 as ur quotient

divisor as 12

and remainder as 4

= 3 4/12

nd u simplify which u divide 4/12 by 4 and get 1/3

so the answer would be 3 1/3

and in order to check you can use an online fraction calculator

Rudy has 8 yards of twine. If he cuts the twine into equal pieces of 3/4 feet each, how many pieces can he cut?

Answers

3 feet = 1yard. 8 yard = 24 feet. 3/4*24 = 18

if john weighs 8lbs less than twice his sister's weight, what is the difference between their weight if john weighs 180 lbs?

Answers

Answer:

86 is the difference

Step-by-step explanation:

180 + 8 = 188

188 / 2 = 94

188 - 94 = 86

Answer:

The difference between their two weights is 86 lbs

x•2-8=180 (x= sister weight)

180+8=188

188÷2= 94 (x=94)

189-94= 86

A certain type of bacteria doubles in population every 6 hours. There were approximately 100 bacteria at the beginning of the day.

How many bacteria will there be at the end of one day?

Answers

Answer:

1600 after 24 hours

Step-by-step explanation:

100+100 = 200 after 6 hours

200+200 = 400 after 12 hours

400+400 = 800 after 18 hours

800+800 = 1600 after 24 hours


HELP ME PLEASE

A rectangular solid measures 24 cm x 12 cm x 2 cm. What is it's total surface area?

Answers

Answer:

288 square meters

Step-by-step explanation:

Write the decimal as a percent. 0.0371 = %

Answers

3.79% would be the percentage

when dividing decimals which place should you move the decimals?

Answers

Answer:

To the right!

Hope that helps!

Step-by-step explanation:

The right is your answer have a beautiful day:)

Solve each multi-step inequality
6 - 8n > - 8 - 6n

Answers

Answer:

n<7

Step-by-step explanation:

hope i did okay for you

Answer:

7>n

Step-by-step explanation:

6-8n>-8-6n

Add 8n on both sides

6>-8+2n

Add 8 on both sides

14>2n

Divide

7>n

Which of the following equations have no solutions?
Choose all answers that apply:
A
152 - 45 = 750 + 75
B.
15% - 45 = 15x + 75
c
45x – 45 = -15% + 75
D
-450 – 45 = -75x + 75

Answers

Answer: B

Step-by-step explanation:

Equation A:

15x - 45 = 75x + 75

=> -120 = 60x

=> x = -2

Equation B:

15x - 45 = 15x + 75

=> 0 = 15

No Solutions

Equation C:

45x - 45 = -15x + 75

=> 60x = 120

=> x = 2

Equation D:

-45x - 45 = -75x + 75

=> 30x = 120

=> x = 4

Muumuu u u unununinjn u u u) ha u he h u u when) why she 123 uu

I am a trinomial whose leading coefficient is -3 when I'm put in standard form:

A.[tex]2xy-3+5xy^{2}[/tex]
B.[tex]3x^3-3x-3[/tex]
C.[tex]4x^2-3x^4+x[/tex]
D.[tex]x^5y-3x^2y-xy[/tex]

Answers

Answer:

C. 4x² - 3x⁴ + x

General Formulas and Concepts:

Algebra I

Terms/CoefficientsStandard Form: Largest degree to smallest degreeLeading Coefficient: Constant multiplied to largest degree

Step-by-step explanation:

Step 1: Define

A. 2xy - 3 + 5xy²

B. 3x³ - 3x - 3

C. 4x² - 3x⁴ + x

D. x⁵y - 3x²y - xy

Step 2: Rewrite

Rewrite each trinomials into standard form.

A. 5xy² + 2xy - 3

B. 3x³ - 3x - 3

C. -3x⁴ + 4x² + x

D. x⁵y - 3x²y - xy

Step 3: Identify LC

A. has a leading coefficient of 5

B. has a leading coefficient of 3

C. has a leading coefficient of -3 (our answer)

D. has a leading coefficient of 1

A circle has center (5, –4) and radius 8. Which gives the equation for the circle

Answers

Answer:

(x-5)^2 + (y+4)^2 =64

Step-by-step explanation:

What is the value of n in the equation below?

Answers

Answer:

wheres the question?......

Answer:

What is the equation?

Equation...? where....?

please help me !!

Line q goes through points (-3, 3) and (-5, -3). At what point does line q cross the y-axis?

Answers

Answer:

(0, 12 )

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 3, 3) and (x₂, y₂ ) = (- 5, - 3)

m = [tex]\frac{-3-3}{-5+3}[/tex] = [tex]\frac{-6}{-2}[/tex] = 3 , then

y = 3x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 3, 3 ), then

3 = - 9 + c ⇒ c = 3 + 9 = 12 ← y- intercept

Thus the line crosses the y- axis at (0, 12 )

Answer:

It crosses the y-axis at the point where y = 12

- the point (0, 12).

Step-by-step explanation:

First we need to find the equation of the line q:

The slope of the line = (-3-3)/(-5-(-3))

= -6/-2

= 3.

Using the point-slope form of a line:

y - y1 = m(x - x1)         Take the point (-3, 3):

y - 3 = 3(x -(-3)

y - 3 = 3x + 9

y = 3x + 12.

Where q crosses the y-axis x = 0 so we have

y = 3(0) + 12

y = 12

The required point is (0, 12).

12=n/5

what does n equal
also n/5 is supposed to be a fraction

Answers

60 do the inverse by multiplying the numbers you have
The answer is............ 60/5

You have $40 in a savings account and you deposit an equal amount into your account each week. After 8 weeks the account holds $128. Write an equation that represents the amount y (in dollars) of money in the account after x weeks.​

Answers

Answer:

40+x=y

Step-by-step explanation:

Katrina received a raise in pay from $14.00 per hour to $15.10 per hour. What is her percent increase in pay per hour?
Type your answer using the % key. Round to the nearest whole percentage if necessary.

Answers

Answer:

8%

Step-by-step explanation:

(New - original) / original x 100

($15.10 - $14)/ $14 x 100 = 7.85 %

7.85% to the nearest whole percentage is 8%

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