Abag contain 3 red ,5 black and 4 white marbles. one marble is drawn at random. what is the probablity not black marble​

Answers

Answer 1
Answer:    7/12

=================================================

Explanation:

There are B = 3+5+4 = 12 marbles total, of which A = 12-5 = 7 are not black. Or you could note that we have A = 3 red + 4 white = 7 marbles that are not black.

The probability of selecting a non-black marble is A/B = 7/12

7/12 = 0.5833 = 58.33% approximately


Related Questions

How many square feet is the world's largest pizza, including the crust?
(Be sure to show and/or explain your work, make your final answer clear, and include units)
The worlds largest pizza, including the crust, has a length of 131 feet

Answers

Answer:

The largest pizza has a total surface area of 1,261.65 m² (13,580.28 ft²) and was prepared by Dovilio Nardi, Andrea Mannocchi, Marco Nardi, Matteo Nardi and Matteo Giannotte (all Italy) from NIPfood at Fiera Roma, in Rome, Italy, on 13 December 2012.

Step-by-step explanation:

How can we represent three-dimensional figures in only two dimensions?

Answers

just add , multiply .

Answer: A three-dimensional figure has a length, a width, and a height. A net is a two-dimensional pattern of a three-dimensional figure, that can be folded to form the figure. Identify the net that we could fold in order to create this 3D figure. Match the 3D figure to the right with its appropriate net, below.

What is sin 49° to the nearest tenth

Answers

Answer:

50

Step-by-step explanation:

50???

Answer:

sin49° = 0.75471

sin 49° = 0.75471

sin 49 degrees = 0.75471

Step-by-step explanation:

Plz help me well mark brainliest if correct.....???

Answers

Answer:

D) line graph

Step-by-step explanation:

There is two lines on the graph that have points on each which makes this graph a line graph.

Hope this helped :)

Answer:

its a line graph

Step-by-step explanation:

is a graph that uses lines to connect individual data points displaying quantitative values over a specified time interval.

Evaluate the expression when x=7 and y=-3. 5y2-x

Answers

-37. You multiply first

A bag contains 8 red pens, 7 blue pens, and 14 black pens. Denato wants to pull a blue pen from the bag. What is the sample space for this experiment? 1. Blue, Red 2. Blue 3. Red, Blue, Black 4. Red, Black

Answers

2...............blue

Answer:

Red and blue is the correct answer

Step-by-step explanation:

Sami made 23,400 last year in income from his job. He worked 30 hours per week and worked all 52 weeks of the year. What was his hourly pay rate?

Answers

Answer:

$15 per hour

Step-by-step explanation:

30 hours per week x 52 weeks in a year = 1560 hours per year

23,400 / 1560 = $15 per hour

what is the ratio?
please answer quickly!!!!!

Answers

Answer:

3:1

Step-by-step explanation:

If you look at the sides, they all have the same factor of three, and dividing by three gets you to the smaller rectangular prism.

Find the median of the data.
93.81.94.71.89.92.94.99
The median is
Find the mode(s) of the data,

Answers

Step-by-step explanation:

MEDIAN

71, 81, 89, 92, 93, 94, 94, 99

92 + 93 = 185 / 2 = 92.5

The median is 92.5

MODE

71, 81, 89, 92, 93, 94, 94, 99

The mode is 94

PLEASE HELP
Makayla owns a small business selling used books. She knows that in the last week 58 customers paid cash, 25 customers used a debit card, and 2 customers used a credit card.
Based on these results, express the probability that the next customer will pay with a debit card as a fraction in simplest form.

Answers

Answer:

2/5 :)

Step-by-step explanation:

58+2=60+25=85-25=60 60 = 2/5

The solution is 5/17

The probability that the next customer will pay with a debit card is given by the equation A = 5/17

What is Probability?

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

The value of probability lies between 0 and 1

Given data ,

Let the probability that the next customer will pay with a debit card be A

Now , the equation will be

The number of customers who paid cash last week = 58 customers

The number of customers who used debit card last week = 25 customers

The number of customers who used credit card last week = 2 customer

So ,

The total number of customers = 58 + 25 + 2

The total number of customers = 85 customers

Now , the probability that the next customer will pay with a debit card A = number of customers who used debit card last week / total number of customers

Substituting the values in the equation , we get

Probability that the next customer will pay with a debit card A = 25 / 85

On simplifying the equation , we get

Probability that the next customer will pay with a debit card A = 5 / 17

Therefore , the value of A is 5/17

Hence , the probability is 5/17

To learn more about probability click :

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help me pass thank you!!!

Answers

Answer:

64

Step-by-step explanation:

[tex] (\frac{m^{2} }{m + 3} )^{3} \\ = \frac{m^{6} }{(m + 3)^{3} } \\ = \frac{6 {}^{6} }{{9 {}^{3} } } [/tex]

46656/729

= 64

A machine in a candy factory can
make 62 candies in one hour. About
how long would it take to make
2,480 candies?

Answers

Answer:

40

Step-by-step explanation:

hope this helps

A population of 950 bacteria grows continuously at a rate of 4.75% per day.
Write an exponential function, N (t ), that represents the bacterial population after t days.

Answers

860N(t) would be the answer just divide the percentage with the population

i Illustrative Mathematid Kendall Hu Ant Trek The distance between Los Angeles and New York City is about 3,944 km. An ant can run about 18 mm per second. How long would it take an ant to run from Los Angeles to New York City?​

Answers

You have to multiply all of them together and then get your answer

A rectangular prism has a length of 5 meters, a width of 6 meters, and a height of 3 meters.
What is the volume of the prism?

Pls hurry
Give Brainlyest

Answers

90 meters
6 x 5=30
30 x 3= 90

volume = length x width x height

volume = 5m x 6m x 3m = 90 m³

help me please I have to pass​

Answers

Answer:

Step-by-step explanation:

15% of 400

15/100*400

15*400/100

6000/100

60

therefore ur answer is 60

C. 60 ✅

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]

[tex] \frac{15}{100} \times 400 \\ =15 \times 4 \\ = 60 [/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]

in a school , 4/9 of the students are boys and number of girls is 90 . find the number of boys in school

Answers

4/9 of the students are boys thus 5/9 students are girls.

Let " x " be the number of all students.

So we have :

5/9 × x = 90

Multiply both sides by 9/5

5/9 × 9/5 × x = 90 × 9/5

1 × x = 9 × 9 × 10 × 1/5

x = 81 × 2

x = 162

_______________________________

number of boys = 4/9 × x

n o boys = 4/9 × 162

n o boys = 162/9 × 4

n o boys = 18 × 4

n o boys = 72

What is the answer for the diagram?

Answers

Answer:

1340-

Step-by-step explanation:

I need the answer fast pls

Answers

87 degrees is the answer

Answer:

89 b

Step-by-step explanation:

Given a variance of 1992.8, what is the standard deviation?


about 44.64


about 43.13


about 43.76


about 45.20

Answers

Answer:

About 44.64.

Step-by-step explanation:

Variance and standard deviation:

The standard deviation is the square root of the variance.

In this question:

Variance of 1992.8. So

[tex]s = \sqrt{1992.8} = 44.64[/tex]

So about 44.64.

the perimeter of a rectangle is 90m. The length is three less than five times the width. What is the length and the width of the rectangle?

Answers

Answer:

length : 37 m

width : 8 m

Step-by-step explanation:

perimeter = 2×l(ength) + 2×w(idth) = 90

l = 5w - 3

=> 2×(5w-3) + 2w = 90

10w - 6 + 2w = 90

12w = 96

w = 8

=> l = 5w - 3 = 5×8 -3 = 40-3 = 37

Only please help #2,3,5, and 6

Answers

2) 7:9
3)5.30/6= 0.88
5)3:4
6)a) 15:20 and to simply divide by 5 to get 3:4
b)the amount saved is 5 (20-15) so the first ratio is 5:20 and to simplify divide 5 to get 1:4

Answer:

3.$0.9

5.9:3 =3:1

Step-by-step explanation:

3.$5.40÷6=$0.9

Write the meaning of each algebraic expression. Then, evaluate the algebraic expression for the given value.
5x - 4 If x=3

Answers

In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number). For example, 3x2 − 2xy + c is an algebraic expression.

5x−4x=3

Step 1: Simplify both sides of the equation.

5x−4x=3

5x+−4x=3

(5x+−4x)=3(Combine Like Terms)

x=3

x=3

Answer:

x=3

Alex is a writer who writes poems and short stories. For an upcoming writer's workshop Alex wants to write some new works. He needs to determine how many poems and short stories he will have ready for the workshop. Alex figures that each poem will take him 30 hours and each short story will take him 70 hours. For the workshop Alex wants to have at least 4 poems and 3 short stories to display. If Alex has 840 hours of work time available, what solution represents the maximum number of works that he could write while staying in his time budget

Answers

Answer:

The maximum number of works that he can write while staying in his time budget is 24.

21 poems and 3 short stories

Step-by-step explanation:

In order to solve this problem we must first determine what our variables are. In this case it's the number of poems and short stories he can write.

p = # of poems

s = # of short stories

Next, we must build our objective function which will represent the total number of works he can write.

N=p+s

where N is the number of works.

Next, we must write the constrains based on the information provided by the problem.

The problem tells us that it takes him 30 hours to write a poem and 70 hours to write a short story and that he has 840 hours available to write them, so that constrain will be the following:

[tex]30p+70s \leq 840[/tex]

it also tells us that he wants to write at least 4 poems and 3 short stories so there we have our other two constrains.

[tex]p \geq 4[/tex]

[tex]s \geq 3 [/tex]

once we got our constrains we can go ahead and graph them to see how they will behave. (See attached picture)

In the graph p is the horizontal axis and s is the vertical axis.

On the graph we can see a polygon that is formed by the restriction. The vertices of the polygon will represent the optimal conditions for this linear programming problem. There are three optimal solutions there, so we need to test them to see which will return the greatest number of works he can write while keeping the given conditions.

Option 1:

4 poems and 3 short stories

N=4+3

N= 7 works

Option 2:

4  poems and 10 short stories

N=4+10

N=14 works

Option 3:

21 poems and 3 short stories

N=21+3

N=24 works

So the optimal solution will be given by option 3 with 21 poems and 3 short stories.

Solve the inequity -3y + 80 > 110

Answers

Answer: y<-10

Step-by-step explanation:

i hope this help :)

Answer:

y<-10

Step-by-step explanation:

-3y+80>110

     -80  -80

-3y>30

-y>10

y<-10  (when deviding by a negative, > switches to <)

the object is a circle with a pentagon inside of it each of the sides of the pentagon is a chord of the circle

Answers

Answer:

The answer to ur question should be, A Object A

Answer:

a

Step-by-step explanation:

Leia needs to make at least 40 necklaces to sell at a craft show. So far, she has made 7. Which inequality shows the
number of necklaces, n, that she still needs to make?


A). n - 7 less than or equal to 40

B) n - 7 greater than or equal to 40

C). n + 7 less than or equal to 40

D). n + 7 greater than or equal to 40

Answers

Answer:

The answer is D

Hope this helps!

Brainliest??

Answer:

D

Step-by-step explanation:

the answer is D because if she already made 7 she need to add n to 7 to get 40 or greater

One half of one tenth is what fraction?

Answers

Answer:

1/2  1/100

Step-by-step explanation:

One half of one tenth is  [tex]\frac{1}{20}[/tex] fraction.

What is a fraction?

A number that expresses parts of a whole object or a set of objects is known as a fraction.

Given

One half of one tenth

Rewriting in mathematical form

= [tex]\frac{1}{2} (\frac{1}{10} )[/tex]

= [tex]\frac{1}{20}[/tex]

Hence, One half of one tenth is  [tex]\frac{1}{20}[/tex] fraction.

Learn more about fraction here

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pls i need help i’ll give brainliest!

Answers

9514 1404 393

Answer:

  x = 12

Step-by-step explanation:

The rule here is that the product of the lengths from the external point of intersection (angle vertex) to the intersections with the circle is the same for both secants. The tangent counts as intersecting the circle twice. So, we have ...

  (6)(6) = (3)(x)

  x = 36/3 = 12 . . . . . divide by the coefficient of x

Karrie is 24 years old. She took her age, divided by -3, added -7, then
multiplied by -4. Her result is 2 years older than her father's age. How old is
Karrie's father? *

Answers

Answer:

58 years old

Step-by-step explanation:

24/-3 is -8

-8+-7 is -15

-15*-4 is 60

60-2 is 58

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