50 pupils in a sports centre are surveyed. the pupils can only use the swimming pool and the gym. 31 pupils use the swimming pool. 28 pupils use the gym. 7 pupils use neither the swimming pool nor the gym. find the probability to select a pupil that uses the swimming pool but not the gym.

Answers

Answer 1

Using it's concept, it is found that there is a 0.3 = 30% probability to select a pupil that uses the swimming pool but not the gym.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, we have that 50 - 7 = 43 pupils use at least one of the pool or the gym.

We use the following relation, considering the numbers of each:

Both = Pool + Gym - At least one

Hence:

Both = 31 + 28 - 43 = 16.

From this, we have that out of 50 pupils, there are 31 - 16 = 15 pupils who use the pool but not the gym, hence the probability is:

p = 15/50 = 0.3 = 30%.

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Related Questions

What's the circumference of a
circle with a diameter of 31 inches?
Use 3.14 for I.
C = [?] inches
Enter the number that belongs in the green
box. Do not round your answer.
Hint: C = nd

Answers

Answer: C = 97.34 inches

Step-by-step explanation:

C = πd

= 3.14(31)

= 97.34

Evaluate the following expression. "5 less than 15"
A. -10
B. 8
C. 20
D. 10

Answers

Answer: 10

Step-by-step explanation: 5 less than 15 is 10 because 15 - 5 is 10. If it was 15 less from 5, only then it would be -10.

Answer:

5 less than 15 is Option D, 10. This is because using mathematical symbols, it says 15-5 which equals to 10.

The following are the distances (in miles) to the nearest airport for 11 families. 9, 11, 11, 16, 16, 24, 28, 30, 34, 42, 45 Notice that the numbers are ordered from least to greatest. Give the five-number summary and the interquartile range for the data set. Five-number summary
Minimum:
Lower quartile:
Median:
Upper quartile:
Maximum:
Interquartile range:

Answers

Answer:

11, 11, 24, 34, 45 and 23

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

Given data

9, 11, 11, 16, 16, 24, 28, 30, 34, 42, 45

Five-number summary

Minimum:

The smallest number of data ⇒ 11

Maximum:

The largest number of data ⇒ 45

Median:

The middle number of the data if data consists of odd number of elements ⇒ 24

Lower quartile:

The median of the lower half of data, 9, 11, 11, 16, 16 ⇒ 11

Upper quartile:

The median of the upper half of data, 28, 30, 34, 42, 45 ⇒ 34

Interquartile rangeThe difference of upper and lower quartiles, 34 - 11 = 23

Izzo's Pizza sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what he found. Type of Crust Number Sold

Thin crust 307

Thick crust 224

Stuffed crust 161

Pan style 191

Based on this information, of the next 2000 pizzas he sells, how many should he expect to be stuffed crust or pan style? Round your answer to the nearest whole number. Do not round any intermediate calculations.

Answers

Answer:

797

Step-by-step explanation:

First, we need to find the number of pizzas sold last week by finding the sum of the pizzas sold:

307 + 224 + 161 + 191 = 883

Next, we need to find the proportion of stuffed crust and pan style pizzas sold last week by adding the number of both sold and dividing by the total number of pizzas sold:

(191+161) / 883 = 352 / 883

Now we need to multiply this proportion by 2000 to find the expected number of stuffed crust or pan style pizzas:

(352 / 883) * 2000 = 797.28 = 797

The logarithmic functions, f(x) and g(x), are shown on the graph.
What is the equation that represents g(x)? Explain your reasoning.

Answers

Answer:

g(x) = log(x + 1) + 4

Step-by-step explanation:

The graph of g(x) is shifted 1 unit left and 4 units right from its parent function.

1. Convert the numeral to a numeral in base ten.
3205 six
43
125
4325
725

Answers

Expanding the digits, we have

[tex]3205_6 \equiv 3\cdot6^3 + 2\cdot6^2 + 0\cdot6^1 + 5\cdot6^0 = \boxed{725}[/tex]

Select the order in which the operations should be performed
(L20) 5 – 3(4)
Subtract 3 from 5, then multiply that number by 4.
Multiply 3 and 4, then subtract that total from 5.
Subtract 4 from 5, then multiply that number by 3.
Multiply 5 and 4, then subtract 3 from that total.

Answers

Answer:

Multiply 3 and 4, then subtract that total from 5.

Step-by-step explanation:

You would need to follow P.E.M.D.A.S.

Parentheses, Exponents, Multiply & Divide, Add & Subtract


Hope that helps! Let me know if you need more help. Please mark me as brainliest!

Rod waxes two thirds of his car with one fourth bottle of car wax. What fraction of the bottle of car wax will Rod need to wax his entire car?

Answers

Answer is 3/8
Step by step

Use x for car wax

2/3x = 1/4 × 1 car
2/3x = 1/4

Divide both sides by 2/3 to solve for x

x = 1/4 divided by 2/3

Note to divide fractions flip the 2/3 and multiply

x = 1/4 × 3/2 multiply across

x = 3/8.

If amy cuddy and her research team originally established a sample size of n=200 (100 in each group) and then discovered that 86% of the high-power group (86 of 100) took a gambling risk while 60% of the low-power group (60 of 100) took the risk, then the p-value would have been much lower than that originally found in question 1. this p-value would have been less sensitive and would have provided stronger evidence for the researcher's hypothesis. state the p-value, rounding to 5 decimal places.

Answers

The p-value that would be given as the evidence would be given as p-value = 0.00002 and also P value = 0.00003

How to solve for the p value

The sample size of the first sample = 100

x1 = success 0f 86%

We have to find the proportion of this = 0.86

The sample size of the second sample n2 = 100

x12 = success 0f 60%

We have to find the proportion of this = 60/100

= 0.6

The difference = 0.86-0.6= 0.26

Next we have to find the pooled proportion. This is taken given as p = (x1+x2)/(n1+n2) this gives us 0.73

Next we have to find the standard error

= √(p*(1-p)*(1/n1+ 1/n2)= 0.06279

Z stat = (0.26-0)/0.0628= 4.1411

From here the p value would have to be

p-value = 0.00002 and also

P value = 0.00003

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-5/12 - (-9/3) what is the answer for this equation

Answers

Answer:

2 7/12

Step-by-step explanation:

Simple fraction problem

If 2 pounds is equal to 3 dollars, which of the following is incorrect?
A. 28 pounds is 44 dollars
B. 23 pounds is 34.50 dollars
C. 11 pounds is 16.50 dollars
D. 10 pounds is 15 dollars

Answers

Answer:

A

Step-by-step explanation:

Find the ratio of pounds to dollars, [tex]\frac{3}{2}[/tex] or 1.5.

Next test each option by multiply the pounds by that ratio.

A: 28*1.5=42

B: 23*1.5=34.5

C: 11*1.5=16.5

D: 10*1.5=15

You can see A is the incorrect answer as 28 pounds would be 42 dollars, not 44.

Help me, plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

Answers

Answer:

70/29 or 2 12/29

Step-by-step explanation:

Coach Salinas wants to compare the kicking statistics for kickers on their team. Which 2 ways could Coach Salinas find the kicker with the greatest goal success rate?

Answers

Th find the kicker with the greatest goal success rate, Coach Salinas should:

identify the kicker who has the best accuracyidentify the kicker has the highest number of field goals per game.

What is statistics?

Statistics refers to the method of collecting data for the purpose of analysis, making of inferences and drawing of conclusions about the data collected.

Statistics usually involve numerical data in large quantities.

Statistical data can be used to make predictions about future events. They are also used to make decisions. For example, the statistical data of soccer players such as games/goal ratio, number of complete dribbles per match, number of successful take-ons, number of tackle or interceptions per game can be used in deciding which soccer player a football team should buy.

In the given scenario, Coach Salinas wants to compare the kicking statistics for kickers on their team in order to find the kicker with the greatest goal success rate.

To do this, Coach Salinas should:

determine the kicker who has the best accuracydetermine the kicker has the highest number of field goals per game.

In conclusion, statistical data is important in making decisions.

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Answer:

A and D are the answers.

Step-by-step explanation:

what is ratio (maths short definition)​

Answers

Answer:

division

Step-by-step explanation:

ratio means those 2 nunbers are being divided

division is how the numbers are related or compared

much of it is describing some of all something

like 2 out 3 dentists like chrwing gum

Use distributive properties for 5(8+r)

Answers

Answer:

40 + 5r

usually you put the one with the variable infront

so 5r+40

Step-by-step explanation:

5(8+r)

5*8 + 5*r

40 + 5r

Quick algebra 1 question for 10 points!

Only answer if you know the answer, quick shout-out to tariqareesha2 and MrBrainly, tysm for the help!

Answers

Answer:

○ [tex]3x + 4y = 7[/tex]

Step-by-step explanation:

The general form of the equation of a straight line is as follows:

[tex]\boxed{y = mx + c}[/tex],

where:

m = slope

c = y-intercept.

This means that m, which is the coefficient of [tex]x[/tex], needs to be [tex]-\frac{3}{4}[/tex].

Therefore we have to rearrange each equation given to make y the subject, and then check if the coefficient of [tex]x[/tex] becomes [tex]-\frac{3}{4}[/tex].

• First option:

[tex]4x - 3y = 7[/tex]

⇒ [tex]-3y = -4x + 7[/tex]

⇒ [tex]y = \frac{4}{3}x -{ \frac{7}{3}[/tex]

∴ 'm' is [tex]\bf \frac{4}{3}[/tex], not  [tex]-\frac{3}{4}[/tex], therefore this option is incorrect.

• Second option:

[tex]4x + 3y = 7[/tex]

⇒ [tex]3y = -4x + 7[/tex]

⇒ [tex]y = -\frac{4}{3}x + \frac{7}{3}[/tex]

∴ 'm' is [tex]\bf -\frac{4}{3}[/tex], not  [tex]-\frac{3}{4}[/tex], therefore this option is incorrect.

Third option:

[tex]3x + 4y = 7[/tex]

⇒ [tex]4y = -3x + 7[/tex]

⇒ [tex]y = -\frac{3}{4}x + \frac{7}{3}[/tex]

'm' is [tex]\bf -\frac{3}{4}[/tex], therefore this option is correct.

Note:

You can rearrange the equation given in the last option, and see that 'm' comes out to be [tex]\frac{3}{4}[/tex], thereby making it incorrect.

[tex]\huge\underline{\underline{\boxed{\mathbb {SOLUTION:}}}}[/tex]

Given:

[tex]\sf{- \dfrac{3}{4}}[/tex]

First, we take all the given options to their slope-intercept form:

[tex]\longrightarrow \sf{y=m x+b}[/tex]

Taking to each equation to its slope-intercept form, you get:

[tex]\small\longrightarrow \sf{-3y = 7 - 4x}[/tex]

[tex]\small\longrightarrow \sf{- \dfrac{4}{ - 3} x + \dfrac{7}{3} }[/tex]

[tex]\small\longrightarrow \sf{y = \dfrac{4}{ 3} x - \dfrac{7}{3} }[/tex]

[tex]\small\longrightarrow \sf{3y = 7 - 4x}[/tex]

[tex]\small\longrightarrow \sf{y = \dfrac{7}{3} - \dfrac{4}{3} x}[/tex]

[tex]\small\longrightarrow \sf{4y y = = 7- 3x}[/tex]

[tex]\small\longrightarrow \sf{y = \dfrac{7}{4} - \dfrac{3}{4} x}[/tex]

[tex]\huge\underline{\underline{\boxed{\mathbb {ANSWER:}}}}[/tex]

◉ [tex] \bm{3x+4y=7}[/tex]

Find the missing length.
= √ [?]
C =
C
6
2
Pythagorean Theorem: a² + b² = c²

Answers

[tex]\huge\text{Hey there!}[/tex]


[tex]\mathsf{Formula: a^2 + b^2 = c^2}[/tex]


[tex]\textsf{Solving:}[/tex]

[tex]\mathsf{2^2 + 6^2 = c^2}[/tex]

[tex]\mathsf{2 \times 2 + 6 \times6 = c^2}[/tex]

[tex]\mathsf{4 + 36 = c^2}[/tex]

[tex]\mathsf{40 = c^2}[/tex]


[tex]\large\textsf{Therefore, your answer should be:}[/tex]

[tex]\huge\boxed{\frak{\sqrt{40}}}\huge\checkmark[/tex]


[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]


~[tex]\frak{Amphitrite1040:)}[/tex]

After a gas-filled balloon is released, it rises 90 feet by the end of the first minute. by the end of the second minute, the balloon rises 120 feet, and by the end of the third minute, it rises 150 feet. how many feet would the balloon rise in 8 minutes? a. 300 c. 390 b. 330 d. 660 please select the best answer from the choices provided a b c d

Answers

Answer:

330

Step-by-step explanation:

the change in hirght = 120 - 90 = 30

so 90 + (30 x 8)

= 90+240

= 330//

An architectural drawing lists the scale as 1/4" = 1'. If a bedroom measures 634" by 412" on the drawing, how large is the bedroom?

Answers

For a bedroom measuring 6 3/4" by 4 1/2" on the drawing, the dimensions of the bedroom are 18 ft. by 27 ft.

Option (C) is correct.

In mathematics, a dimension is the length or width of an area, region, or space in one direction. It is just the measurement of an object's length, width, and height.

According to the question,

The scale of an architectural sketch is 1/4" = 1'. If, according to the drawing, a bedroom has the dimensions 6 3/4 by 4 1/2 inches.

Then, the dimensions of the bedroom in feets are calculated as follows:

As 1/4" = 1'

6 3/4" = 27'= 27 ft.

Similarly,

4 1/2" = 18' =18 ft.

Thus, the dimensions of the bedroom are: 18 ft. by 27 ft.

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determine the rate of change of the function.

decreasing at increasing rate
increasing at a decreasing rate
decreasing at a decreasing rate
increasing at an increasing rate

Answers

it would be C
Deceasing at a decreasing rate

What is the maximum value of the transformed function, y = -3cos (2x - 8) + 5
A. 3 units
B. 5 units
C. 8 units
D. 11 units

Answers

Answer:

C. 8 units.

Step-by-step explanation:

The maximum value of the cosine ( cos) function is 1

So, for y = 3cos(2x - 8) + 5

Maximum value  is 3 *1 + 5 = 8.

y = -3cos(2x - 8) + 5 is the above graph reflected in the y axis so the maximum value is also 8.

What additional information could be used to prove that the triangles are congruent using aas? select two options.

Answers

Two angles and a non-included side of one triangle.

The AAS rule states that:

If two angles and a non-included side of one triangle are equal to two angles and a non-included side of another triangle, then the triangles are congruent.

In the diagrams below, if AC = QP,

∠ A = ∠ Q,

∠ B = ∠ R,

then triangle ABC ≅ QRP.

What is meant by congruence of triangles?

Congruence of triangles: Two triangles are said to be congruent if all three corresponding sides are equal and all the three corresponding angles are equal in measure.

There are 5 main rules of congruency for triangles:

SSS Criterion: Side-Side-Side.

SAS Criterion: Side-Angle-Side.

ASA Criterion: Angle-Side- Angle.

AAS Criterion: Angle-Angle-Side.

RHS Criterion: Right angle- Hypotenuse-Side.

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what is the range 42,43,44,44,49,40,39

Answers

Answer:

range is 10

Step-by-step explanation:

highest number is 49

loweest number is 39

49 - 39 = 10

Answer:

10

Step-by-step explanation:

The range is found by taking the largest number and subtracting the smallest number

The largest number is 49

The smallest number is 39

The range is 49-39 = 10

Which characteristic is necessary to create a table that compares two functions?

Answers

Answer:

Which characteristic is necessary to create a table that compares two functions :

Choose the same values for each function [tex]\huge \checkmark[/tex]

Amanda is building a soft triangular kennel for her dog. she has four wooden planks of lengths 2 feet, 3 feet, 5 feet, and 6 feet. determine which planks amanda should use to build the triangular-shaped kennel. enter the lengths from least to greatest. a triangular kennel made of carpet-covered planks

Answers

Amanda would use 3 planks of lengths 3 feet, 5 feet, and 6 feet.

What is a triangle?A triangle is a three-edged polygon with three vertices. It is a fundamental shape in geometry. Triangle ABC denotes a triangle with vertices A, B, and C. In Euclidean geometry, any three non-collinear points define a unique triangle and, by extension, a unique plane.

To determine which planks Amanda should use to build the triangular-shaped kennel:

To build a kennel for dog, we would try to make it the largest possible with what we have.So, we would go with the 3 longest planks: 3ft, 5ft, and 6ft.By looking at the length, we see that we could make something very close to a right triangle since we could use the 6ft as a hypotenuse, and have the two other sides as 3ft and 5 ft  (6² is almost 3²+5², which equals 34).That means our corner angle would be slightly over 90 degrees.

Therefore, Amanda would use 3 planks of lengths 3 feet, 5 feet, and 6 feet.

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Pls help …. Need it immediately ….

Answers

The answer is 10.73 years.

Here, the formula we can use is :

[tex]\boxed {Children = \frac{Boys+Girls}{2}}[/tex] (for the average)

Substitute the values mentioned in the question.

10.54 = (10.35 + Girls)/2

21.08 = 10.35 + Girls

Girls = 10.73 years

Suppose you live in a country with a proportional tax system. you make $20,000 a year and pay $5,000 in taxes. your friend makes twice as much money as you. what amount can your friend expect to pay in taxes this year? $2,500 $5,000 $10,000 $20,000

Answers

Answer:

10,000

Step-by-step explanation:

Tbh this was pretty simple. If he makes twice the money as you, he pays twice as much too. Meaning he makes 40k a year and pays 10k for taxes

Evaluate :11/3 + -3/7 + -4/9

Answers

Answer:

3.67+(-0.43)+(-0.44)

3.67-0.43-0.44

3.24-0.44

2.8 Ans

Which graph represents the function f(x)=(x+4)(x+1)(x−3)?

Answers

Answer:

your answer will be C .

Step-by-step explanation:

A computer chip factory produces 520 chips in 13 minutes. at this rate, how many chips does it produce in 1 hour?

Answers

They could do 2,400 chips in an hour
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