Mathematics High School

A bag contains 3 red marbles, 7 blue marbles and 8 green marbles. If three marbles are drawn out of the bag, what is the exact probability that all three marbles drawn will be green?​

Answers

Answer 1

Answer:

4/9

Step-by-step explanation:

Answer 2

8/18 x 7/17 x 6/16 = 336/4896 = 0.06863 = 6.863% = 6.9\%

≈0.06863=6.863%≈6.9%

Related Questions

Work out the number of years of investment for each return.
a. £3000 invested at 3% simple interest returns £3720

Answers

Answer:

41 years approx

Step-by-step explanation:

Given data

P=  £3000

R=3%

Simple Interest= £3720

Time=???

We know that from the simple interest expression

SI= PRT/100

substitute

3720= 3000*3*T/100

Make T subject of the formula

T= 3720*100/3000*3

T= 372000/9000

T= 41.33

Hence the number of years is 41 years approx

Determine if the triangles are similar. If yes, write a similarity statement and give the scale factor. if NO explain why the triangles are not similar.​

Answers

These triangles are similar because
they both have right triangles with a 90 degree angle

A teacher bought pencils for $14.99, but she knows the store bought them for $8.50. What is the percent markup to the nearest whole?

Answers

Answer:

20

Step-by-step explanation:

23 would be the answer but its rounding to the nearest whole

help me please! someone?

Answers

Answer:

105 for 3 hours

Step-by-step explanation:

First we have to find that how much he is charged for 1 hour.

140 : 4 = 35 per hour

Then we have to find how much he is charged for 3 hours by multiplying with 3.

3 x 35 = 105 per 3 hours

Answer:

£105

Step-by-step explanation:

let y represent the unknown amount

£150 = 4 hrs

y = 3 hrs

we then cross multiply

£150 x 3 hrs = y x 4 hrs

450= 4y

divide both sides by 4

450/4 = 4y/4

105 = y

Three-quartersbof the boat in the marina are white, 4/7 of the remaining boats are blue and the rest are red. How many boats are in the marina​

Answers

Hmmm... we are missing at least one value, number, of boats.

Write in quadratic form
f(x)=(x+2)^2

Answers

The quadratic is f(x)=x^2+4x+4

Hi could someone give me an answer? please?

Answers

A)= 2/20 or 1/10
B)=16/20 or 4/5
C)=1/5

Answer:

a) 10%

b) 80%

c) 20%

Step-by-step explanation:

I hope that is useful for you :)

Find the surface area of the figure below:​

Answers

Answer:

216 is the surface area

Step-by-step explanation:

48+48+48+48+12+12

need answer. pls help ​

Answers

Answer: 28 degrees

Step-by-step explanation:

Since angle KJL = LJM then that means angle 7x=3x+16

First we need to solve for x

7x=3x+16

4x=16

x=4

now we can input it into either equation to solve for the angle KJL

7(4)= 28 so the angle is 28 degrees

-18+x=-x+12
This one ??

Answers

Answer:

X = 15

Step-by-step explanation:

Let's solve your equation step-by-step.

−18+x=−x+12

Step 1: Simplify both sides of the equation.

x−18=−x+12

Step 2: Add x to both sides.

x−18+x=−x+12+x

2x−18=12

Step 3: Add 18 to both sides.

2x−18+18=12+18

2x=30

Step 4: Divide both sides by 2.

2x/2 30/2 = 15

h6lppppppndue in 45 min

Answers

Answer:  6:5 ; 18:15 ; 36:30

Step-by-step explanation:

6/5 = x/15

5x = 6(15)            use cross multiply

5x = 90

x = 18

6/5 = 36/x

6x = 5(36)            use cross multiply

6x = 180

x = 30

Answer:

Answer below

Step-by-step explanation:

For every 6 taxis, there are 5 busses

if there are 15 busses, thats 3 sets of 5

6x3 is 18. so for every 15 busses, there are 18 taxis

If there are 36 taxis, thats 6 sets of 6

since there are 5 busses for every 5 taxis

5x6 is 40

for every 30 busses, there are 36 taxis

2) Select one of your sides.
Side: Nachos Price : 3.00
Your cost to make this side just became
cheaper. As a result, you are going to
decrease the price by $0.25. What is
the percent of change?
Answer:
I need the response quick please

Answers

Answer:

Step-by-step explanation:

nachos=3 =100%

1.5=50%

0.50=25%

0.25=12.5%

Write an expression to represent:
Nine more than the quotient of two and a number x

Answers

Answer:

9+(2/x)

Step-by-step explanation:

Please answer this for me ✨✨

Answers

Answer:

reflection

Step-by-step explanation:

Im just learned this so if I'm wrong, i'm sorry >.<

Answer: rotation

Step-by-step explanation:

how do you solve for quadrilaterals and their properties?

Answers

Opposite angles are equal.

Opposite sides are equal and parallel.

Diagonals bisect each other.

Sum of any two adjacent angles is 180°

8. help me and if u get it right ill give u brainliest

Answers

Answer:

Step-by-step explanation:

All of the above

4 times 2/13 in simplest form

Answers

Hopes this helps:

Answer: 8/13

Answer:

8/13

Step-by-step explanation:

4=4/1

4/1*2/13=8/13 can't be more simplified.

Please mark brainliest I need it

The length of a rectangle can be represented by the expression (2 - 1) and the width can be
represented as (x + 3). The area of the rectangle is 12 square feet. Set up an equation that
could model this information, Solve the quadratic equation to determine a possible value for x,






PLS HELP ME AND IF YOU CAN SHOW HOW U GOT THE ANSWER IF NOT THATS OKAY!!! ILL ALSO MARK YOU BRANLIEST IF YOU HELPED ME!!! <333

Answers

Answer:

Step-by-step explanation:

The length is (x-1), not (2-1).

area = (x-1)(x+3) = 12 ft²

x²+2x-3 = 12

x²+2x-15 = 0

(x+5)(x-3) = 0

x = -5, 3

-5 is an extraneous solution, so x=3.

Length = x-1 = 2 feet

Width = x+3 = 6 feet

Calculate the rise and run between any two coordinates to find the slope of each line ...

Answers

For the first one its a slope of -2/3

The second one is 4/5

and the third one is -1/7

Type the correct answer in each box. Use numerals instead of words. Bethany collected 200 survey responses regarding recycling behaviors in her city. Of those responses, 174 people responded that they participate in the city’s recycling program. Use this information to complete the statement. Round all answers to the nearest hundredth. The approximate sample proportion is , which means that % of the people surveyed do not participate in the city’s recycling program.

Answers

Answer:

13% did not participate in citys recycling program not sure about the first part

Step-by-step explanation:

Answer:

Step-by-step explanation:

Find the value of x.​ Will give brainliest

Answers

Step-by-step explanation:

[tex] \frac{ \sin(38) }{15} = \frac{ \sin(68) }{x} \\ x = \frac{15 \sin(68) }{ \sin(38) } = 22.58 = 22.6[/tex]

Suzy needs a raise in her allowance to buy the new iPhone. In order to do so, she must make a total average of 90 in all of her classes. Her science average is an 85, her math average is a 92, her history average is a 95, and her choir class is a 95. Her English class is undetermined as of now. What does Suzy have to make in English to be able to receive her raise?

Answers

Answer:

83

Step-by-step explanation:

Total averages from the known classes

85+92+95+95=367

367+83=450

Divide 450 by the number of classes she has(5)

=90

PLEASE HELP PLEASE PLEASE

Answers

Answer:

Step-by-step explanation:

x > -7

Open circle means the solution does not include -7 and it is more than -7

I need help with prime factors

Answers

Answer: the answer is 8 and 3

Step-by-step explanation:

factors are numbers that can be multipiled together to find a whole number. since 8 and 3 are being multiplied together to get 24, 8 and 3 are factors of 24.

I hope this helps ! good luck

Solve the equation by factoring: 2x3 - 30x2 + 100x =0​

Answers

Ok so first I am going to multiply the equations that need to be multiplied which will simply the equation down to 6-60+100x=0
My next step is going to be subtracting 60 from 6 which will simply my equation down even further to -54+100x=0
Now I am going to add -54 to both side so that my 100x is my itself which will simply my equation down to 100x=54
Our next step is to divide 100 by both side so that x is left by itself causing our answer to be 0.54!
Hope this helps!
Please tell me if I have made an error, I enjoy learning from my mistakes.
Have a great rest your day❤️

which rectangle represents dilation by a scale factor of 2 from the rectangles center?

Answers

Answer:

Original coordinates of F is (2,1)

Step-by-step explanation:

when DEFG is dilated by a scale factor of 1/2 with a dilation center of (0, 0), coordinates of point F' will be

( 2 x 1/2, 1 x 1/2 ) = ( 1, 1/2 )

please help!!

In a survey, 90% of dentists recommended sugarless gum for their patients who chew gum. If the total number of dentists surveyed was 80, how many dentists recommended chewing sugarless gum?
(Hint: What is 90% of 80?)

Answers

Answer:

72

Step-by-step explanation:

80x.90= 72

Answer:

72 is your answer

Step-by-step explanation:

Mrs. Collins is going to plant her garden. She purchases 4 tomato plants for $2.59 each, a package of watermelon seeds for $1.87, and a jalapeno plant for $3.88. How much will Mrs. Collins spend on seeds and plants for her new garden?

Answers

Answer:

5.65

Step-by-step explanation:

SOMWRGING AROUND THAT

0. What percent of 9 is 18? What are you going to solve?
b. percentage
d. decimal
a rate
c. base
​pleas help

Answers

Answer:

What percent of 9 is 18 = 200% and for the second part it is B.

Step-by-step explanation:

I just know that is the answer.

Si la temperatura de un día de invierno esta en 6°C y baja 10°C, ¿cuanto marcara el termómetro?

Answers

Answer:

el termómetro sería de 4 grados Celsius negativos

Step-by-step explanation:

¡Espero que esto ayude!

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