A group of 72 children completed a survey on what kind of sport they like. The choices were: Chess, Swimming, and Football. Everyone liked at least one sport except 7 kids, which doesn't like any of these three kind of sports. 12 children liked Chess and Football but not Swimming, 16 children liked Chess and Swimming but not Football, 8 children liked Swimming and Football but not Chess, 10 children liked Chess only, 40 children liked Swimming, 32 student liked Football.
a)Find the number of kids who liked Swimming and Football.
b)What is the probability that a randomly-chosen child from this group likes either Chess or Swimming but not Football?
c)What is the probability that a randomly-chosen child from this group does not like active kinds of sport?

Answers

Answer 1

Answer:

see below

Step-by-step explanation:

Let C = chess

S = swimming

F = football

x = football only

y = all three sports

z = swimming only

x+y+ 8+12 = 32  those who like football

y+z+8+16 = 40  those who like swimming

7+x+8+y+12+10+16+z = 72  all children

Simplifying these equations

x+y = 32-20 = 12

y+z = 40-24 = 16

x+y +z = 72-53 = 19

Substituting x+y = 12 into the last equation

12 +z = 19

z = 7

y+z = 16  

y = 9

x+y =12

x =5

Swimming  only is 7

Football only is 5

Swimming and football y+8 = 9+8 = 17

P( chess or swimming but not football) = (10+16+z)/ total

                                                                 =(10+16+7)/ total

                                                                 =33/72

P( no  active sport) = chess only or no sport/total

                                 =(10+7)/72

                                                                 

A Group Of 72 Children Completed A Survey On What Kind Of Sport They Like. The Choices Were: Chess, Swimming,

Related Questions

Rita pumped 42 gallons of water into her pool. This was done over a period of 6 minutes at a constant Rate. What was the change in the amount of water in the pool each minute ​

Answers

Answer:

7 Gallons every minute

Step-by-step explanation:

We know that a total of 42 gallons of water was pumped for 6 minutes at a constant rate. Constant rate means that it will always pump the exact same amount of water each time. Eince its at a constant rate we just need to find out how much water was poured over the course of a minute, which can be done by dividing 6 (minutes) by 42 (gallons of water) = 7 gallons of water.

What is the value of y for the point with an x-value of 3?

Answers

Answer:

When y=8 x =7

Step-by-step explanation:

Go up until y = 8

Go across until you find a dot

Drop down to read the x value

When y=8 x =7

The answer is y equals 8 and x equals 7 !

When will there be 0 pennies in the jar?how did you figured this out?

Answers

23 3/4 rounds because you can take 95 divided by 4 to get 23 3/4 rounds

write 6691 to the nearest 1000

Answers

Answer:

7000

Step-by-step explanation:

Answer:

7000 is your answer.

Step-by-step explanation:

3 = x/3.3 What is x?

Answers

Answer:

The answer is 9.9

Step-by-step explanation:

3.3 times 3 is 9.9

The solution to the equation 3 = x/3.3 for x is x = 9.99

How to determine the solution to the equation for x

From the question, we have the following parameters that can be used in our computation:

3 = x/3.3

Rewrite the equation as

x/3.3 = 3

Multiply 3.3 to both sides of the equation

so, we have the following representation

3.33 * x/3.3 = 3 * 3.33

Evaluate the products on the right hand side

This gives

3.33 * x/3.3 = 9.99

Evaluate the products on the left hand side

This gives

x = 9.99

Rewrite as

x = 9.99

Hence. the solution is x = 9.99

Read more about equations at

https://brainly.com/question/32492977

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Anyone wanna help me out

Answers

Answer:

[tex]58.91m^2[/tex]

Step-by-step explanation:

(smaller triangle below)

[tex]A=\frac{ab}{2}\\ =\frac{8.6*5.5}{2}\\ =23.65m^2\\\\A=\frac{ab}{2}\\ =\frac{8.6*8.2}{2} \\=35.26m^2[/tex]

(bigger triangle above)

Since you have both triangle, and all lengths you dont need to worry about calculating the square

Add both together

[tex]23.65+35.26\\=58.91m^2[/tex]

Answer:

There’s 2 triangles and 1 rectangle

The formula for the area of a triangle is 1/2 x base x height

The area of the triangle on the left is:

1/2 x 5.5 m x 8.6 m = 23.65 m^2

The area of the triangle on the right is:

1/2 x 8.2 m x 8.6 m = 35.26 m^2

The formula for the area of the rectangle is length x width.

The area of the rectangle is:

8.6 m x 7.6 m = 65.36 m^2

The area of the entire figure = sum of all the areas in the figure

23.65 m^2 + 35.26 m^2 + 65.36 m^2 = 124.27 m^2

Hope this helps! :)

Plz help me it’s emergency

Answers

Answer:

Profit Percentage: 67.29%

Step-by-step explanation:

Mia spent 50*$28 = $1,400

From batch 1, she earned $1,862

From batch 2, she earned $480

In total, her net earnings are $942

Net Profit Margin: 40.22%

Profit Percentage: 67.29%

Suppose that an experiment is repeated four times. A certain event has probability 1/10 in a single repetition of the
experiment. What is the probability that the event occurs every time in the 4 trials?
2/5
1/40
1/10,000

Answers

Answer:

it's not 2/5 I got it wrong the correct answer is 1/10,000

Step-by-step explanation:

Tanner calculates the volume of a rectangular prism with dimensions ft by 5 ft by ft. His work is shown below.




What error did Tanner make?

He multiplied the numerators incorrectly.

He multiplied the denominators incorrectly.

He simplified incorrectly.

He wrote 5 as a fraction incorrectly.

Answers

Answer:

He multiplied the denominators incorrectly

(COMPLETING THE MISSING PARTS OF THE QUESTION)

Tanner calculates the volume of a rectangular prism with dimensions of three by four feet by five feet by one half feet.

His work is shown below:

V = L.W.H

V = (3/4)(5/1)(1/2) = ((3)(5)(1)) / ((4)(1)(2)) = 15/6 = 2.5

What error did Tanner Make?

Solving the Question:

We know that volume is given by:

V = L.W.H

where

L = 3/4 ft

W = 5/1 ft

H = 1/2 ft

Find V:

[tex]V = \frac{3}{4}\cdot\frac{5}{1}\cdot\frac{1}{2}\\\\V=\frac{3\cdot5\cdot1}{4\cdot1\cdot2}\\\\V=\frac{15}{8}\\V=1.875[/tex]

As the product of denominators is 8, not 6 as to per Tanner's calculations, he multiplied the denominators wrong

Answer:

b

Step-by-step explanation:

A radio station had 140 tickets to a concert. They gave away 3 times as many tickets to listeners as to employees. How many tickets
did they give away to employees?

Answers

Answer: 35

Step-by-step explanation:

Brainlist and thanks if correct

screenshot is below thats question. ty

Answers

Answer:

x=-4

Step-by-step explanation:

Ohhh you wrote 4 on the other post, not 4x.

Okay.

6(x+3)-4x=10

6x+18-4x=10

2x=-8

x=-4

Answer:

The value of [tex]x[/tex]:

[tex]x = -4[/tex]

Step-by-step explanation:

Solve for [tex]x[/tex]:

[tex]6(x+3) - 4x = 10[/tex]

Use Distributive Property:

[tex]6(x+3) - 4x = 10[/tex]

[tex]6x + 18 - 4x = 10[/tex]

Combine [tex]6x[/tex] and [tex]-4x[/tex] together:

[tex]6x + 18 - 4x = 10[/tex]

[tex]2x + 18 = 10[/tex]

Subtract both sides by [tex]18[/tex]:

[tex]2x + 18 - 18 = 10 -18[/tex]

[tex]2x = -8[/tex]

Divide both sides by [tex]2[/tex]:

[tex]\frac{2x}{2} = \frac{-8}{2}[/tex]

[tex]x = -4[/tex]

So, therefore, the final answer is [tex]x = -4[/tex] .

which one

A.

B.

C.

D.

Answers

B. is correct! Hope this helps!

Answer:

Answer:B

Step-by-step explanation:

7/8 x 3/5 = 0.525 and 0.525 as a fraction is 21/40.

Which ordered pair is generated from the equation below?

y = x - 2

OA) (5,7)
B) (7, 14)
OC) (7,9)
OD) (5,3)

Answers

Answer:

d) (5,3)

Step-by-step explanation:

All you gotta do is graph it and plugin the options.

I provided the graph

Use the general rotation matrix and the unit circle or inverse trigonometric functions to find the angles of rotation for the following matrices.

A=[sqrt3/2 -1/2]
1/2 qrt3/2

30
60
50
210

Answers

Answer:

30 is the answer to the first question and 108 is the answer to the second question

Step-by-step explanation:

Just took the test on Edge 2020

Answer:

30

108

Step-by-step explanation:

One of Tyler’s chores is to feed the chickens. Two bags of chicken feed will last 5 days. How many days will 8 bags of chicken feed last? Can u please put the proportion? pls

Answers

Answer:

20days

Step-by-step explanation:

1 bag feed : 5/2 = 2.5 days

8 bags feed : 2.5*8 = 20 days

Please answer correctly !!!! Will mark brainliest !!!!!

Answers

Hi there!

f(x) = − 4x/5 − 8/5

Hope this helps !

Neal power walks to stay in shape. He
follows a path that is 2.85 miles long.
Last week, Neal power walked this path
6 times. How many miles did Neal
power walk last week?
O A 1.7 miles
O B 17.1 miles
O C 171 miles
OD 1,710 miles

Answers

Answer:

He walked 17.1

Step-by-step explanation:

If you do 2.85 times 6 you'll get that answer.

Your welcome!

The area of a square lawn is 169 yd2. What is the length of each side of the lawn?

Answers

The length of each side of the lawn is 13 yards.

look at the attached picture

Hope it will help you

Good luck on your assignment...

Answer:

[tex]13 \: \: yd[/tex]

Step-by-step explanation:

[tex]area \: \: \: of \: \: a \: \: square \\ 169= l \times b \\ 169 = x \times x \\ 169 = {x}^{2} \\ [/tex]

So,

[tex] {x}^{2} = 169 \\ x = \sqrt{169} \\ x = 13 \: \: yd[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Find the equation of the line passing
through the points (2, 1) and (5, 10).
y = [? ]x + [ ]

Answers

Answer:

[tex]y=3x-5[/tex]

Step-by-step explanation:

[tex]m=10-1/5-2[/tex]

[tex]m=9/3[/tex]

[tex]m=3[/tex]

[tex]y=3x+b[/tex]

[tex]x=2, y=1[/tex]

[tex]1=3(2)+b[/tex]

[tex]1=6+b[/tex]

[tex]-5=b[/tex]

[tex]y=3x-5[/tex]

Please help sorry I’m dumb

Answers

The answer is x = 18

Solve this equation. Explain your reasoning.
1/2×+3/4=9​

Answers

Answer:

33/2

Step-by-step explanation:

Multiply both sides by 4 to get rid of fractions

2x + 3 = 36

Subtract 3 from both sides

2x = 33

Divide by 2

x=33/2

Type the correct answer in each box.
A circle is centered at the point (-7,-1) and passes through the point (8, 7).
The radius of the circle is
units. The point (-15,
) lies on this circle.
Reset
Next

Answers

Answer:

17 units

Step-by-step explanation:

The radius r is the distance from the centre of the circle to a point on it.

To calculate r use the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 7, - 1) and (x₂, y₂ ) = (8, 7)

r = [tex]\sqrt{(8+7)^2+(7+1)^2}[/tex]

  = [tex]\sqrt{15^2+8^2}[/tex]

  = [tex]\sqrt{225+64}[/tex]

   = [tex]\sqrt{289}[/tex]

   = 17

A rectangle has a height of 4xand a width of 3x+ 1.
Express the area of the entire rectangle.

Answers

Answer:

12x² + 4x

Step-by-step explanation:

Area rectangle = height * width = 4x(3x + 1) = 12x² + 4x

PLEASE HELP!!!! DUE TODAY

Answers

Answer:

Step-by-step explanation:

$ 86,000 lies in the category $84201 - $ 160725

Tax = 14,382.50+ 24% of the amount over $84,200  

Amount over $84,200= 86,000 - 84,200 = $1,800

Tax for the amount $ 1,800 =24% * 1800 = 0.24 * 1800

                                             = $ 432

Tax for the amount $86,000 = 14382.50 + 432

                                               =$ 14814.50

Please help this is very easy!!!!!!!

Answers

Answer:

7/6

Step-by-step explanation:

7/8 * 4/3

7/2 * 1/3

7/6

Answer:

When you divide a fraction, make the second number the reciprocal. Then multiply them.

So it is

3/4 = 4/3

7/8 * 4/3 = 28/24

28/24 is the answer

Simplified = 7/6 or 1 1/6

write the equation you would use to find x, then solve for x.

Answers

Answer:

x + 6x+10   + x+2 = 180

x = 21

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

x + 6x+10   + x+2 = 180

Combine like terms

8x + 12 = 180

Subtract 12 from each side

8x+12-12 = 180-12

8x =168

Divide each side by 8

8x/8 = 168/8

x =21

Answer:

Step-by-step explanation:

by angle sum property of a triangle ,

x+x+2+6x+10=180

8x =180-12

8x =168

x =168/8

x=21

hope it helpss

Consider triangle DEF. The legs have a length of 36 units

What is the length of the hypotenuse of the triangle

18 units

1872 units

36 units

36/7 units

Answers

Answer:

[tex]\large \boxed{36\sqrt{2}\text{ units}}[/tex]

Step-by-step explanation:

Assume ∆DEF looks like the one below.

We can use Pythagoras' Theorem to find the hypotenuse f.

[tex]\begin{array}{rcl}d^{2} + e^{2} & = & f^{2}\\36^{2} + 36^{2} & = & f^{2}\\f^{2} & = & 2 \times 36^{2}\\f & = & \sqrt{2 \times 36^{2}}\\& = & 36\sqrt{2}\\\end{array}\\\text{The length of the hypotenuse is $\large \boxed{\mathbf{36\sqrt{2}}\textbf{ units}}$}[/tex]

Mark is converting £225 into $. He knows that £1 = €1.15 and €1 = $1.21. How many $ will Mark get? Give your answer to 2 dp. what is it

Answers

Answer: $313.09

Step-by-step explanation:

£1 = €1.15

£225 = 225 * 1.15 = €258.75

€1 = $1.21

€258.75 = 258.75 * 1.21 = $313.09

Answer:

$313.09

Step-by-step explanation:

£1= €1.15

therefore £225 =225×1.15

which is =€258.75

and since €1=1.21

therefore €258.75 =$258.75×1.21

which is =$313.0875

in 2 dp answer= $313.09

What’s the surface area of this prism?

Answers

Answer:

128 in2

Step-by-step explanation:

Uptown Dance is a dance studio that chargers clients for dance lessons. On a Saturday afternoon, 38 people came for a dance class. Uptown Dance made $1,330 that afternoon. How much do they charge per person?

Answers

Answer:

They charge $35 per person.

Step-by-step explanation:

If they made $1,330 and 38 people came that afternoon then

$1,330 divided by 38

= $35

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