a jar contains 12 white , 24 gray and 14 black marbles a marble is drawn at random find p(not gray)

Answers

Answer 1

SOLUTION

Notice that the total number of marbles are

\(12+24+14=50\)

The probability of not grey means it could be white or black

Hence

P(not grey) = P(white or black)

Since there are 12 whites and 14 blacks the the P(white or black) is

\(\begin{gathered} P(WorB)=\frac{12}{50}+\frac{14}{50} \\ P(WorB)=\frac{26}{50} \\ P(WorB)=\frac{13}{25} \end{gathered}\)

Therefore the P(not gray) is:

\(P(not\text{ gray\rparen=}\frac{13}{25}\)


Related Questions

prove the divisibility rule by three, which states that a number is divisible by 3 if and only if the sum of its digits is divisible by 3.

Answers

The divisibility rule for 3 on any integer number  is proven in the detailed explanation of the solution.

Given a non-decimal number, n.

Suppose n may be divided by 3.

n should be thought of in terms of its digits as

n = d × 1 × 10⁽ⁿ⁻¹⁾⁽ⁿ⁻¹⁾ + d  × 2 × 10⁽ⁿ⁻²⁾ + ... + d × m × 10⁰

where d 1, d 2,..., d m are its digits and m is the number of digits in n.

The result of the preceding equation with n = 3k is

3k = d  × 1 × 10(m-1) + d × 2 × 10(m-2) +... + d × m × 10(m-0)

3000 is subtracted from both sides of the equation, giving us

0 = d × 1 × 10⁽ⁿ⁻¹⁾⁽ⁿ⁻¹⁾ + d  × 2 × 10⁽ⁿ⁻²⁾ + ... + d × m × 10⁰

We obtain by adding 3k to both sides of the equation.

3k = d × 1 × 10⁽ⁿ⁻¹⁾+ d

The divisibility rule is a heuristic for determining if two positive integers can be divided evenly (i.e. there is no remainder left over). For instance, determining if a number's last digit is 2, 4, 6, 8, or 0 makes it simple to determine whether it is even.

By examining the digits of the number, a divisibility rule provides a simple shorthand for determining if an integer is divisible by a particular set of factors without actually doing the division. This page only offers recommendations and examples for decimal, or base 10, numbers despite the fact that there are distinct divisibility tests for numbers in each radix or basis.

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Dean ran 2.3 fewer kilometers than Sam. If Dean ran 6.8 km, how far did Sam run?

A 2-column table with 4 rows. Column 1 is labeled Situation with entries increasing, difference, finding part of a total, sharing or grouping. Column 2 is labeled Operation with entries +, minus, times, divided by.

Select all that apply.
You know the difference in the distances the boys ran, so this is a subtraction problem.
You are finding the total distance the boys ran, so this is an addition problem.
Dean ran part of the distance Sam ran, so this is a multiplication problem.
The correct equation is s + 2.3 = 6.8.
The correct equation is s – 2.3 = 6.8.
The correct equation is 2.3s = 6.8.

Answers

Answer:

A,E

Step-by-step explanation:

Operation: Minus

To find how far Sam ran, we need to subtract 2.3 from Dean's distance of 6.8 km.

6.8 km - 2.3 km = 4.5 km

Therefore, Sam ran 4.5 km, since Dean ran 2.3 km fewer than Sam.

Dean ran 2.3 fewer kilometers than Sam. If Dean ran 6.8 km, how far did Sam run?A 2-column table with

Answer:

a and e

Step-by-step explanation:

got it right on homework

carol rolled a dice 150 times she rolled a six 39 time

Answers

Answer:

nice

Step-by-step explanation:

whats the rest of the problem or is it just that she rolled a dice

The Singh family ordered a large pizza with a diameter of 16 inches for dinner. If one of the members of the family ate one eighth of the pizza, how many square inches of pizza are remaining? Use 3.14 for π.
A. 200.96 square inches
B. 175.84 square inches
C. 100.48 square inches
D. 25.12 square inches

Answers

B is my answer i might be wrong

Answer:

B. 175.84 square inches

Step-by-step explanation:

3.14 x 64= 200.96

200.96 / 8 = 25.12

25.12 x 7 = 175.84

A sector of a circle has an area of 20 square feet. Find the central angle which forms the sector if the radius is 5 feet. The central angle of the sector isradians. (Type an integer or a simplified fraction.)

Answers

The area of a sector of a circle is equal to the central angle multiplied by the radius squared, divided by 2. In this case, the sector of the circle has an area of 20 square feet, the radius is 5 feet, and we need to find the central angle.

The central angle will be 6.28 radians.

To find the central angle, we can rearrange the equation to solve for the angle:

Central Angle = (2 * Area) / (Radius^2)

Substituting the given values, we get:

Central Angle = (2 * 20) / (5^2)

Simplifying, we find that the Central Angle equals 6.28 radians.

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Answer idhfbfhfnffdvdbbdbdd

Answer idhfbfhfnffdvdbbdbdd

Answers

8.7 hope this helpsss L

Solve the following inequality then place the correct answer in the box provided 8x-1<15

Answers

Answer:

x < 2

Step-by-step explanation:

8x -1 < 15
Add both side by 1 : 8x < 16
x < 16/8 => x < 2

12 km
9.9 km
7 km
12 km
Find the perimeter of the shape below

Answers

Answer: 40.9

Step-by-step explanation:

I got this by adding all the numbers up because that’s what you do you add up all the sides for perimeter

Is an acute triangle less than 90 degrees?

Answers

Yes, an acute triangle less than 90 degrees

what is acute triangle?

An acute angled triangle is one in which all of the angles are fewer than 90 degrees. One such illustration of an acute angled triangle is the one below.

Hence the triangle less than 90 degrees is acute angle

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Is an acute triangle less than 90 degrees?

Find x in the diagram below ​

Find x in the diagram below

Answers

The value of the angle x is 30 degrees

How to determine the value

To determine the value of the variable x, we need to know the triangle sum theorem.

The triangle sum theorem is a theorem in mathematics stating that the sum total of the interior angles in a triangle is equivalent to 180 degrees.

We should also note that angle at right angle is 90 degrees

Then, we have the angles written as;

90 degrees

2x degrees

x degrees

Equate the angles , we have;

2x + x + 90 = 180

collect the like terms, we have;

2x + x = 180 - 90

add or subtract the like terms, we have;

3x = 90

divide by the coefficient

x = 30

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I just need the answer for C. Please answer quick this is due tmr morning!! worth 20 points and brainliest

I just need the answer for C. Please answer quick this is due tmr morning!! worth 20 points and brainliest

Answers

Answer:

The answer is 7 for C.

Step-by-step explanation:

7+7=14 and 7x7=49

The diamond just asks for numbers that make up a pattern for the two given numbers.

13 pounds of bananas cost $26. How many poundscan you get with $22?

Answers

$26 = 13 pounds

So,

26/13 = 2 dollar per pound

So, for 22 dollars, you can get:

22/2 = 11 pounds

х
У
о
12
1
8
N
4
3
о
4
4

Answers

Answer:

13

Step-by-step explanation:

Sorry im in 5th grade.

9hr. 8min+ 6hr. 42min.+ 8hr. 39min.

Answers

Step-by-step explanation:

24 hours and 29 minutes

24 hours and 29 mins
Explanation

HELPPPPPPPP DUE TODAYYYY!!!!!!!!!!!!! WORTH 30 POINTS!!!!!!!!!

HELPPPPPPPP DUE TODAYYYY!!!!!!!!!!!!! WORTH 30 POINTS!!!!!!!!!

Answers

Answer:

4.5

Step-by-step explanation:

you want to reach $3,000 in savings over four years your account will earn 10% interest per year how much must you save each month

Answers

You would need to save approximately $56.62 each month to achieve your savings goal of $3,000.00 over four years.

To calculate the monthly savings required to reach a savings goal of $3,000.00 over four years with a 10% annual interest rate,  we can use the PMT (Payment) function.

The PMT function helps us determine the fixed payment amount needed to achieve a specific future value within a given time frame.

Let's break down the given information:

Present Value (PV): $0.00 (initial account balance)

Future Value (FV): $3,000.00 (savings goal)

Interest Rate (rate): 10% per year (annual interest rate)

Number of Periods (nper): 4 years (48 months)

Using the PMT function, we need to plug in the values and solve for the monthly payment (savings amount).

The formula for the PMT function is:

PMT(rate, nper, pv, [fv], [type])

Where:

rate = Interest rate per period

nper = Total number of periods

pv = Present value (initial account balance)

fv = Future value (savings goal)

type = (Optional) Indicates whether the payment is made at the beginning (1) or end (0) of the period.

We'll assume 0 for monthly savings.

Let's calculate the monthly savings using the PMT function:

PMT(10%/12, 4*12, 0, -3000, 0)

Here, we divide the annual interest rate by 12 to get the monthly interest rate (10%/12), multiply the number of years by 12 to get the total number of months (4*12), set the initial account balance (pv) as $0, set the future value (fv) as -$3,000 (negative because it's an outgoing payment), and assume the savings are made at the end of each month (type = 0).

Using a financial calculator or spreadsheet software, the monthly savings required to reach the goal of $3,000.00 over four years with a 10% annual interest rate is approximately $56.62.

Therefore, you would need to save approximately $56.62 each month to achieve your savings goal of $3,000.00 over four year.

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Question : you want to reach $3,000.00 in savings over four years. Your account will earn 10% interest per yea Initially your account has a zero balance. How much must you save each month to achieve this goal? Use the PMT() function. Look it up in the e-book if you do not know how to use it. TIP: This is monthly so do not forget to adjust the interest rate and number of payment.

Students raised $88 for charities. Their principal gave $35 to charity A and
the rest to charity B. What is the ratio of money given to charity A to the
money given to charity B?
35:53
35: 88
53:35
88:35





The gym has 15 basketballs and 40 footballs. what is the simplified ratio of basketballs to footballs?
15:40
10:40
3:8
8:3

Students raised $88 for charities. Their principal gave $35 to charity A and the rest to charity B. What

Answers

Answer:

35:53

3:8

Step-by-step explanation:

The difference of a number and 8.

Answers

The difference of an unknown number and eight means subtracting. An unknown number can be represented by a variable like x.

x - 8

divided by 10.

x - 8

____

10

A house was valued at $299,000 . Over several years, the value decreased by, 9% giving the house a new value.
(a) Fill in the blank to write the new value in terms of the old value.
Write your answer as a decimal.

(b) Use your answer in part (a) to determine the new value.

Answers

Answer:

A) - The NEW VALUE in terms of the old value is 0.91  times the old value.

B) - The NEW VALUE of the HOUSE is:  299,000  *  0.91  =  $272,090

Step-by-step explanation:Make A Plan:

      A) - Calculate the Percentage of the Value Remaining After the Decrease

       B) - Calculate the NEW VALUE of the house

SOLVE THE PROBLEM:

A) - The PERCENTAGE of the VALUE REMAINING AFTER the DECREASE

      100%  -  9%  =  91%

As A DECIMAL:

        0.91

B) - Calculate the NEW VALUE of the house:

NEW VALUE  =  OLD VALUE  *  REMAINING PERCENTAGE

NEW VALUE  =  299,000  *  0.91

Draw the conclusion:

A) - The NEW VALUE in terms of the old value is 0.91  times the old value.

B) - The NEW VALUE of the HOUSE is:  299,000  *  0.91  = $272,090

I hope it helps!

I need this done because i really do not want to fail

I need this done because i really do not want to fail

Answers

Answer:

Step-by-step explanation:

it is 77.6

Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making mistakes

Please answer this correctly without making mistakes I want ace expert and genius people to answer this

Answers

Answer:

39

Step-by-step explanation:

-13x-1x3 = 13x3 = 39

Answer:

Given that, w = -13, x = -1, y = 3

\(→wxy = ( - 13)( - 1)(3) = \boxed{ 39}✓\)

wxy=39 is the right answer.

DON'T SOLVE IT

I know the answer. I just need to know the TOPIC in geometry.
What is the topic???

DON'T SOLVE ITI know the answer. I just need to know the TOPIC in geometry.What is the topic???
DON'T SOLVE ITI know the answer. I just need to know the TOPIC in geometry.What is the topic???

Answers

Answer:

Triangles in Geometry

Step-by-step explanation:

A tree is 34.65 feet tall. What is its height in meters? Use the following conversion: 1 meter is 3.3 feet.

Answers

Answer:

34.65 / 3.3 = 10.5

Step-by-step explanation:

Answer:

10.5 meters

Step-by-step explanation:

1 meter = 3.3 feet.

1 feet = 1/3.3 meters

then, 34.65/3.3 = 10.5 meters

whats the answer for log b + z log c in condense form

Answers

Answer:

log b.c^z

Step-by-step explanation:

from the theorem a log b=log b^a

z log c= log c^z

from the theorem log a + log b= log ab

log b+ log c^z= logb. c^z will be the final answer

Is this function? Please help

Is this function? Please help

Answers

Answer:

Its a funcion if "x" doesnt repeat

Step-by-step explanation:

can someone pls help answer this

can someone pls help answer this

Answers

Answer:

Small: 7

Large:13

Step-by-step explanation:

I worked it out, hope this helps

Answer:

Answer:

Small: 7

Large:13

Step-by-step explanation:

I worked it out, hope this helps

A gumball machine has 100 red gumballs. If the red gumballs are 25% of the total number of gumballs, how many gumballs are in the gumball machine?

Answers

Answer: 400

Step-by-step explanation:

25% is equal to one quarter (1/4). If theres 100 red gumballs then there must be 300 more gumballs in the machine because a quarter of a number is always even.

Claire created a pie chart to show how she spent her time on Monday. She spent 8 hours at school, 4 hours playing basketball, 2 hours doing homework, 8 hours sleeping, and 2 hours doing chores. Which statements describe how the pie chart will look? Select four options..
The pie chart will show that Claire spent about 33.3% of her time sleeping.
The pie chart will have five sections.
The pie chart will contain one section that represents 50% of her time.
Twenty-four hours will be equivalent to 100% in the pie chart.
The pie chart will have two sections that are each equal to one-third of the pie chart.

Answers

Answer:

Step-by-step explanation:

The pie chart will show that Claire spent about 33.3% of her time sleeping.

Pie chart will show that Claire spent about 33.3% of her time sleeping, The pie chart will have five sections, Twenty-four hours will be equivalent to 100% in the pie chart.

What is pie chart?

The "pie chart," which divides the circular statistical graphic into sectors or sections to illustrate the numerical problems, is also known as a "circle chart." A proportionate portion of the total is denoted by each sector. At that point, the pie chart is the most effective method for determining something's composition.

Given 24 hours schedule of Clair in which,

school time is 8 hours, playing time is 4 hours, homework time is 2 hours, sleeping time is 8 hours and chores time is 2 hours.

if we calculate total time in percentage than 24 hours will be equal to 100%

and their will be 5 sections in chart,

equivalent time for school in percent is 100/24 x 8 =33.33%

equivalent time for sleeping in percent is 100/24 x 8 =33.33%

equivalent time for homework in percent is 100/24 x 2 = 8.33%

equivalent time for chores in percent is 100/24 x 2 = 8.33%

equivalent time for playing in percent is 100/24 x 4 = 16.66%

Hence the pie chart will have 5 sections and sleeping time will be 33.33%.

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Claire created a pie chart to show how she spent her time on Monday. She spent 8 hours at school, 4 hours

Pls help me on this question

Pls help me on this question

Answers

Answer:

Yes.

Step-by-step explanation:

if you take away 25 from a number you will be left with two and halftimes 30. what is the number?​

Answers

The answer would be 100.
If you take away 25 from (100) you get 75.
70 also equals 2.5*30
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