in a class there are 8 students who play football and cricket 4 students who do not play football or cricket 14 students who play football 20 students who play cricket find the probability that a student chosen at random plays football or cricket or both

Answers

Answer 1

Answer:

Step-by-step explanation:

hello :

here is an solution :

In A Class There Are 8 Students Who Play Football And Cricket 4 Students Who Do Not Play Football Or
Answer 2

The probability that a student chosen at random plays football or cricket or both is approximately 0.8667, or 86.67%, after considering the number of students playing each sport and accounting for those who play both.

To calculate the probability that a student chosen at random plays football or cricket or both, we can use the concept of probability along with a Venn diagram to organize our information.

First, we need to calculate the total number of students that play at least one of the sports. We know that 8 students play both football and cricket, 14 students play football, and 20 students play cricket. However, the 8 students that play both sports are included in the totals for both football and cricket. Therefore, to find the number of students who play at least one sport, we need to subtract the students counted twice because they play both sports:

Total playing football or cricket or both = (Number playing football) + (Number playing cricket) - (Number playing both)
= 14 + 20 - 8
= 26 students

We also know there are 4 students who do not play football or cricket. To find the total number of students, we add the number of students who play either sport to those who play neither:

Total number of students = 26 (playing sports) + 4 (not playing any sports)
= 30 students

The probability that a student chosen at random plays football or cricket or both is calculated by dividing the number of students who play either sport by the total number of students:

P(playing football or cricket or both) = Number of students playing sports / Total number of students
= 26 / 30
= 0.8667 (rounded to four decimal places)

The probability is approximately 0.8667, or 86.67%.


Related Questions

Mr.Wells tells his class of 24 that when they have compleyed the assignment they may play online math games.At the end of class, 40% of the class is playing online math games. Approximately how many students still need to complete their assignment.

Answers

Answer:

14

Step-by-step explanation:

Because 40% of the class is playing games, that means (100-40)% aren't playing, meaning that those 60% haven't finished the assignment.

We find 60% of the total 24 students, and that is .6 * 24 = 14.4

Because you can't have .4 people, the answer rounds (down ) to 14

Answer:

14 Students.

Step-by-step explanation:

40% of 24 is 9.6 (Which should be approximated to 10). 24 Students in total - Approximately 10 who have completed the assignment is 14 students who still need to complete the assignment.

ANSWER my question IF YOU WANT TO HAVE BRANIEST




In a certain triangle, two of the sides have measures of 13 and 20. If the triangle is isosceles, then which of the following could be the measure of the third side?
1) 7
2) 33
3) 40
4) 13

Answers

Answer:

4)13

Step-by-step explanation:

In geometry, an isosceles triangle is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case.

Ilana ran 2 laps around the field in 8 minutes. What was her average speed, in laps per minute?
StartFraction 1 Over 10 EndFraction of a lap per minute
One-fourth of a lap per minute
4 laps per minute
10 laps per minute

Answers

Answer:

Salty spark is right

Step-by-step explanation:

for anyone who didnt know 0.25 is equivalent to 1/4 just to make it clear 1/4 IS the correct answer saltyspark just put it in decimal form.

Final answer:

To find Ilana's average speed, we divide the total laps by the total minutes, which results in one-fourth of a lap per minute.

Explanation:

To find the average speed, we divide the total distance by the total time taken

To determine Ilana's average speed, we need to divide the total distance (2 laps) by the total time (8 minutes). When we do that, we get 0.25 laps per minute.

This is also known as one-fourth of a lap per minute. That means, on average, Ilana completes a quarter of a lap every minute.

Learn more about Average Speed here:

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Which are side lengths of quadrilateral PQRS? Check
all that apply.
PIO, 4)
Q(2, 4)
4 units
5 units
6 units
/13 units
4/2 units

Answers

Answer: 2 , 3 , & 4 are correct .

The graph of F(X)= (6-4X)^2/2X^2-5X+12 HAS A HORIZONTAL ASYMPTOTE AT Y=

Answers

Answer:

Y = 8

Step-by-step explanation:

(6-4X)²/[2X²-5X+12]

[36 - 48X + 16X²]/[2X² - 5X + 12]

Y = 16/2

Y = 8

Answer: 8

Step-by-step explanation:

find the value of x in the triangle, 60°, 60°, 5x​

Answers

Triangles have well 3 angles, and they all add up to 180. So 180-60-60= 60. This means that 5x=60. So you divide by 5 on each side and get x=12.

The value of x in the expression for the angle of the triangle is 12.

What is the value of x in the triangle?

The figure in the image is a triangle.

From the image:

Angle 1 = 5x

Angle 2 = 60 degrees

Angle 3 = 60 degrees

Note that, the sum of the interior angle of a triangle equals 180 degrees.

To determine the value of x, add the 3 angles and equate to 180 degrees.

Hence:

5x + 60 + 60 = 180

Collect and add like terms:

5x + 120 = 180

Subtract 120 from both sides:
5x + 120 - 120 = 180 - 120

5x = 180 - 120

5x = 60

x = 60/5

x = 12

Therefore, x has a value of 12.

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Which circle C shows a chord that is not a diameter?

Answers

Answer:

if the chord is not passing through the center of the circle it is not a diameter

A chord is any line that divides the circle into two parts; the parts may be equal or unequal

How to draw the chord?

From the question, we understand that the chord is not a diameter

This means that:

The chord does not pass through the center of the circleThe chord does not divide the circle into equal segments

See attachment for a diagram that illustrates the chord

Read more about chords at:

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A sphere has a diameter of 2yards

Answers

Where is the rest of the question

Plz help if u understand!?

Answers

Answer:

38.01

Step-by-step explanation:

The answer is 38.01ft !:)

Saige's spaceship traveled 588 km in 60 sec. Determine whether or not each spaceship trip below has the same speed as Saige's spaceship.

Answers

Answer:

only 441 km in 45 s has the same speed as Saige's

Step-by-step explanation:

588 / 60 = 9.8 km/sec

441 / 45 = 9.8 km/sec

Answer:

441km in 45s—same speed

215km in 25s—not the same speed

649km in 110s—not the same speed

Step-by-step explanation:

Please, I need help fast!

Answers

Answer:

A.

Step-by-step explanation:

Hope this helps!

A hockey player takes a shot with a 15 degree angle of elevation 24 ft away from the goal and hits the cross bar. How tall is the goal. Round to the nearest tenth.

Answers

The goal is 6.4 ft tall.
Hope this helps :)

he height of the triangle is 15 cm and the base is (45-x) cm. If the area of the triangle is 225 cm2, what is the value of x?

Answers

Answer:

x =15

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh

We know the area=225 and the base= (45-x) and the height =15

Substituting these into the equation

225 = 1/2 (45-x)*15

225 = 15/2 (45-x)

Multiply each side by 2/15

2/15 *225 = 2/15*15/2 (45-x)

30 = 45-x

Subtract 45 from each side

30-45 =45-x-45

-15 = -x

Multiply each side by -1

15=x

Lena buys 12 cans of soft drinks and 11 sandwiches for a picnic. Patrick buys 10 cans of soft drinks and 7 sandwiches for the same picnic. Let c be the cost of a soft drink. Let s be the cost of a sandwich. Write an expression that represents the total cost.

Answers

The answer would be 22c + 18s

Answer:

22c + 18s

Step-by-step explanation:

Lena buys:

12c + 11s

Patrick buys;

10c + 7s

Total cost is the sum of the both Lena and Patrick's purchase

12c + 11s + 10c + 7s

collect like terms

12c +10c + 11s + 7s

22c + 18s

10) Beth and Ming are selling pies for a school fundraiser. Customers can buy blueberry pies and

blackberry pies. Beth sold 3 blueberry pies and 12 blackberry pies for a total of $258. Ming sold

4 blueberry pies and 3 blackberry pies for a total of $110. What is the cost each of one blueberry

pie and one blackberry pie?

Answers

Answer: Each blueberry pie costs $14 and each blackberry pie costs $18.

Step-by-step explanation:

If X is the price of a blueberry pie and Y is the price of a blackberry pie we have that:

3*X + 12*Y = $258

4*X + 3*Y = $110

We have a system of equations, to solve it first we can isolate one of the variables in one of the equations, let's isolate X in the first equation.

3*X = $258 - 12*Y

X = $258/3 - (12*Y)/3 = 86  - 4*Y

now we can replace it in the second equation and get:

4*(86 - 4*Y) + 3*Y = 110

344 - 16Y + 3Y = 110

344 - 13Y = 110

13Y = 344 - 110 = 234

Y = 234/13 = 18

So each blackberry pie costs $18.

And we can replace it in the equation for X and get the value of X.

X = 86 - 4*Y = 86 - 4*18 = 14

So the price of a blueberry pie is $14.

Answer:

the cost each of one blueberry pie is $14

and one blackberry pie is $18

Step by step explanation:

Given that;

Beth sold 3 blueberry pies and 12 blackberry pies for a total of $258.

Ming sold 4 blueberry pies and 3 blackberry pies for a total of $110.

Let x represent the cost of blueberry pies and y the cost of blackberry pie.

3x + 12y = 258 ........1

4x + 3y = 110 ..........2

To solve the simultaneous equations;

Multiply equation 2 by 4, equation 2 becomes;

16x +12y = 440 .......3

Subtract equation 1 from 3;

16x-3x + 12y-12y = 440-258

13x = 182

x = 182/13 = 14

Substituting x=14 to equation 2

4(14) + 3y = 110

3y = 110 - 4(14)

3y = 54

y = 54/3

y = 18

the cost each of one blueberry pie is $14

and one blackberry pie is $18

The intensity of an earthquake with a magnitude of 2 is how many times greater than the intensity of an a standard earthquake ?

Answers

Answer:  

The intensity of an earthquake with a magnitude of 2 is 100 times greater than the intensity of a standard earthquake.

Explanation:  

The magnitude of earthquakes is given by

[tex]Magnitude=log\frac{I}{S}[/tex]

[tex]2=log\frac{I}{S}\\[/tex]

Where I is the intensity of earthquake and S is the intensity of standard earthquake.

The magnitude of standard earthquakes is given by

[tex]Magnitude=log\frac{S}{S}= log(1) = 0[/tex]

So comparing the magnitude of the given earthquake and standard earthquake,

[tex]log\frac{I}{S} = log\frac{S}{S}[/tex]

[tex]log\frac{I}{S} - log\frac{S}{S}[/tex]

[tex]log(2) - log(1)[/tex]

[tex]2 - 0[/tex]

[tex]2[/tex]

which means that

[tex]10^2 = 100[/tex] times greater

Therefore, the intensity of an earthquake with a magnitude of 2 is 100 times greater than the intensity of a standard earthquake.


sin 68 = 7/b

tan 68 = 7/a

Answers

Sin 68 = 7/b 0.142
Tan 68 = 7/a 0.353
I suggest using a graphing calculator and the calculator app :)

What point is the rotated image of Q?

Answers

The answer is b. Just flip it along the y axis

BRAINLIEST!!! ASAP! It’s easy

Answers

Answer:

83.3%

Step-by-step explanation:

Convert fraction (ratio) 10 / 12

Answer: 83.333333333333%

Can someone please help me

The values StartRoot 8 EndRoot and StartRoot 14 EndRoot are plotted on the number line.


A number line going from 0 to 4. StartRoot 8 EndRoot is between 2 and 3, StartRoot 14 EndRoot is between 3 and 4.


What is the approximate difference in tenths between the two values?

0.5

0.9

1.1

2.4

Answers

Answer:

The answer is 0.9

Step-by-step explanation:

I got it right

Step-by-step explanation: ANSWER is B 0.9

The heights of 1000 students at a local school were recorded and found to be approximated by the normal curve below. Which answer could represent the mean and standard deviation for these data ?

Answers

Answer:

The mean of the distribution of heights of students at a local school is 63 inches and the standard deviation is 4 inches.

Step-by-step explanation:

The normal curve approximating the distribution of the heights of 1000 students at a local school is shown below.

For a normal curve, the mean, median and mode are the same and represents the center of the distribution.

The center of the normal curve below is at the height 63 inches.

Thus, the mean of the distribution of heights of students at a local school is 63 inches.

The standard deviation represents the spread or dispersion of the data.

From the normal curve it can be seen that values are equally distributed, i.e. the difference between two values is of 4 inches.

So, the standard deviation is 4 inches.

Which Expression is equivalent to the expression (3^2)^3?

27^6

27^5

3^6

3^5

ANSWER ASAP! NEED FOR RIGHT NOW

Answers

(3^2)^3=3^6

(3^2)^3=729

3^6=729

I need help figuring out which two grids have the same % please

Answers

Answer:

a and c

Step-by-step explanation:

The first one is 3/6 = 50%

The second one is 3/8 = 37.5%

The third one is 2/4 = 50%

The fourth one is 5/8 = 62.5%

The ones with the same percent shaded are the first and third

Answer:

a and c

Step-by-step explanation:

A has 3 out of a total of 6 shaded, and that would be 3/6. 3/6 simplifies into 1/2 which is also 50%. Same with c. 2 out of four pieces are shaded, 2/4. 2/4 becomes 1/2 which is also 50%.

write the quadratic question whose roots are 1 and 6, and whose leading coefficient is 4

Answers

Answer:

[tex] 4 {x}^{2} - 28x + 24[/tex]

Step-by-step explanation:

Roots of the quadratic equation are 1 and 6

Therefore, (x - 1) & (x - 6) are factors.

Leading coefficient is: 4

Required quadratic equation is given as:

[tex]4(x - 1)(x - 6) \\ = 4( {x}^{2} - 6x - x + 6) \\ = 4( {x}^{2} - 7x + 6) \\ = 4 {x}^{2} - 28x + 24[/tex]

Help please . Lost .

Answers

Hope this will help u...

A certain insecticide kills 60% 60 % of all insects in laboratory experiments. A sample of 7 insects is exposed to the insecticide in a particular experiment. What is the probability that exactly 4 insects will survive? Round your answer to four decimal places.

Answers

Answer: The probability that exactly 4 insects will survive = 0.2903.

Step-by-step explanation:

Given : The proportion of all insects in laboratory experiments killed by insecticide = 60%=0.60

Since , by using insecticide only two outcomes are possible either it kills or not kills , so we can use binomial.

Sample size of insects = 7

By using binomial probability formula : [tex]P(x)=^nC_xp^x(1-p)^{n-x}[/tex], where x is binomial variable , n = sample size and p is the probability of getting success.

Let x be the number of insects survived.

As per given , we have

n=7 , p=0.60

Now , the probability that exactly 4 insects will survive :

[tex]P(x=4)= ^7C_4(0.60)^4(1-0.60)^3\\\\=\dfrac{7!}{4!3!}(0.60)^4(0.40)^3\\\\= 35\times 0.1296\times 0.064 \\\\=0.290304\approx0.2903[/tex]

Hence, the probability that exactly 4 insects will survive = 0.2903

The average daily balance is the mean of the balance in an account at the end of each day in a month. The following table gives the dates and amounts of the transactions in Elliott's account in June.
Day of June Transaction type Transaction amount (in dollars)
111 Starting balance 122312231223
101010 Deposit 615615615
151515 Withdrawal -63−63minus, 63
222222 Withdrawal -120−120minus, 120
There are 303030 days in June.
What is the average daily balance of Elliott's account for the month of June?

Answers

Answer:

1583.90

Step-by-step explanation:

This is correct

Answer:

Step-by-step explanation:

Let's start by figuring out what the new balance is each time the balance changes, and the number of days with that balance. Then we can take the mean of those balances.

Hint #22 / 4

Day of June Transaction amount (in dollars) New balance Days with that balance

111 122312231223 122312231223 10-1=910−1=910, minus, 1, equals, 9

101010 615615615 1223+615=18381223+615=18381223, plus, 615, equals, 1838 15-10=515−10=515, minus, 10, equals, 5

151515 -63−63minus, 63 1838+(-63)=17751838+(−63)=17751838, plus, left parenthesis, minus, 63, right parenthesis, equals, 1775 22-15=722−15=722, minus, 15, equals, 7

222222 -120−120minus, 120 1775+(-120)=16551775+(−120)=16551775, plus, left parenthesis, minus, 120, right parenthesis, equals, 1655 31-22=931−22=931, minus, 22, equals, 9

[Why subtract from 31?]

Hint #33 / 4

To find the mean, we first sum all of the daily balances. Then we divide by 303030, since there are 303030 days in June.

\begin{aligned}&\phantom{=}\dfrac{1223 \times 9 + 1838 \times 5 + 1775 \times 7 + 1655 \times 9}{30} \\\\ &=\dfrac{11{,}007 + 9190 + 12{,}425 + 14{,}895}{30} \\\\ &=\dfrac{47{,}517}{30} \\\\ &=1583.90 \end{aligned}

 

=

30

1223×9+1838×5+1775×7+1655×9

=

30

11,007+9190+12,425+14,895

=

30

47,517

=1583.90

Hint #44 / 4

The average daily balance of Elliott's account for the month of June is 1583.901583.901583, point, 90 dollars.

What is the length of the hypotenuse of the triangle?




 ft

 ft

 ft

 ft

Answers

Answer:

65

Step-by-step explanation:

hope this helps

23 is between which two prefect squares? Between which two integers is √23

Answers

Answer:

4² and 5²

Step-by-step explanation:

4² = 16

5² = 25

Find the median of the test scores: 95, 90, 70, 65, 35, 70, 60, 70, 95.

Answers

Answer:

Step-by-step explanation:

First, arrange the numbers from least to greatest: 35, 60, 65, 70, 70, 70, 90, 95, 95. Then find the middle number by taking away 1 number from each side.

The middle number is 70, so the median is 70.

Look at the attached picture

Hope it will help u...

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