A swim instructor would like to test the effect of a new swim technique versus the standard technique for a group of 25 competitive swimmers.

The swim instructor divides the students by class (junior or senior), and then randomly allocates half of the 14 juniors and 5 of the 11 seniors to receive instruction on the new technique.

During swim practice, the instructor times the juniors as they race against each other to see if those who learned the new technique outperform their peers. The instructor does the same for the seniors.

At the end of practice, the instructor compares the average swim time for both juniors and seniors among those who did and did not use the new technique.

A) The instructor should place the 25 student names on slips of paper and place them in a hat. Twelve of the slips should be drawn out and those students should receive the instruction on the new technique.

B) The instructor should place the names of the 14 juniors on slips of paper and place them in one hat. The 11 seniors’ names should be placed on slips of paper and placed into a separate hat. The instructor should randomly select 7 juniors and 5 seniors to receive instruction on the new technique.

C) For each student, the instructor should flip a coin. If the coin lands on heads, the student will receive instruction on the new technique. If the coin lands on tails, the student will not receive instruction on the new technique.

D) The students should line up alphabetically and count off by 2s. Every student who gets a 1 will receive instruction on the new technique. Every student who gets a 2 will not receive instruction on the new technique.

Answer:

Cantidad de adultos= 975

Step-by-step explanation:

Dada la siguiente información:

Cantidad total de personas= 1.500

Proporición de niños y niñas= 0,35

Proporción de adultos= (1 - 0,35)= 0,65

Para calcular la cantidad de adultos, debemos utilizar la siguiente formula:

Cantidad de adultos= cantidad total de personas*proporción de adultos

Cantidad de adultos= 1.500*0,65

Cantidad de adultos= 975

Answer:

Step-by-step explanation:

The 75th percentile is the 3rd line, the median (50th percentile) is the second line, and the 25th percentile is the 1st line.

So, 10 is the answer.

Answer: 78.54

Step-by-step explanation:

Answer:

31.4 cm²

Step-by-step explanation:

10*3.14=31.4²

Answer:

the school

Step-by-step explanation:

the point given is (4,5) so let's try to hone in on that so to speak-

with that in mind, the way that i find the easiest to answer this is by using rise over run or the crawl before you walk method

seeing as how both are practically the same i'll just go with the craw before you walk method-

so we will 'crawl' to 4 along the x axis then we'll 'walk' and stop once we reach (4,5) and at (4,5) there is the school building and since her town is also located at the same point the school building is the correct answer

good luck :)

i hope this helps

brainliest would be highly appreciated

have a nice day!

Answer:

0

Step-by-step explanation:

j + 8 <= 8

Subtract 8 from both sides.

j <= 0

Answer: 0

Answer: 5 nickels and 19 quarters

Step-by-step explanation:

Let represent the number of nickels and let represent the number of quarters.

From the problem we can write these two equations:

+ = 24; (0.05) + (0.25) = 5.00

Isolate in the first equation: = 24 − .

Substitute 24 − for and solve for :

(24 − )(0.05) + (0.25) = 5.00

24(0.05) − (0.05) + (0.25) = 5.00

1.20 − 0.05 + 0.25 = 5.00

1.20 + 0.20 = 5.00

0.20 = 3.80

= 19

Use = 19 to find :

+ = 24; + 19 = 24; = 5

Answer: 5 nickels, 19 quarters

Hope this helps!

Answer:

19 quarters and 5 nickles

Step-by-step explanation:

19 * .25 = 4.75     .05 * 5 = .25     4.75+.25= 5

Answer:

55°

Step-by-step explanation:

2 is congruent with 1

Answer:

-9m-4mn

Step-by-step explanation:

1) m(-12-4n+3)​

Rearrange the equation.

2) m(-12+3-4n)​

3) m(-9-4n)​

Cross multiply.

4) -9m-4mn

Answer:

x=42

Step-by-step explanation:

2(x-8)=68

Distribute the 2

2x-16=68

Use the addition property of equality (add 16 to both sides)

2x=68+16

2x=84

Use the division property of equality (divide both sides by 2)

x=84/2

x=42

Answer:

a. first box: 75%

second box: 21

b. 7 (u have already wrote)

c. 21+7=28

Answer:

8x^4-5

Step-by-step explanation:

8x^4-5

Just substitute 4x^2 into x

Answer:

= 32x^4-5

Step-by-step explanation:

Answer: 57 R3

‎‎‎‎‎‎‎‎‎‎‎‎‎ ‎‎ ‎

Answer:

57 R 3

Step-by-step explanation:

6 goes into 34 5 times with 4 extra, pull down the 5, and 6 goes into 45 7 times with 3 extra. So the answer is 57 R 3.

The length of the side AC will be equal to 5.69 cm

A figure consisting of four sides connected together and forming a total angle of 360 degrees is called a quadrilateral.

Given that:-

ABCD is a kite, so AC I DB and DE= EB.

AD = 4 cm BD = 4 cm and CD = 3 cm.

The side AC will be calculated as:-

Since AC is bisecting the line BD so BE = ED and BE = 2 cm and ED = 2 cm. WE have AD = 4 cm so we will calculate AE first by using the Pythagorean theorem.

AE² = AD² - ED²

AE² = 4² - 2²

AE² = 16 - 4 = 12

AE = √12 = 3.46 cm

Similarly, we will find the value of EC.

EC² = 3 ² - 2²

EC² = 9 - 4 = 5

EC = √5 =2.23

WE know that AC = AE + EC

AC = 3.46 + 2.23

AC = 5.69 cm

Therefore the length of the side AC will be equal to 5.69 cm

To know more about quadrilaterals follow

https://brainly.com/question/16691874

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Answer:

thats easy

Step-by-step explanation:

Answer:

what do you need help with?

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

7 x 3/4 = 21/4 = 5 - 1/4 ft

Answer:

On the first one, multiply 6 by 3 (18) and subtract from 27 = $11

Step-by-step explanation:

$11 divided by three

About $3.66 Per day. I don't know how to do those graphs you doin but that's the answer to the question itself. Hope I helped?

The second one:

Divide 77 by 7 days (11)

Then subtract 4 from that (which gives you 7) because you need to know how much water is used on the flowers, not the shrubs. So, the answer should be 7. Correct me if I'm wrong, people.

Answer:

50.2 inches

Step-by-step explanation:

circumference =2pir

2(3.14)8

6.28(8)

50.24 inches roused to the tenth place so 20.2

Answer:

50.27 or 16pi

Step-by-step explanation:

C = 2πr = 2·π·8 ≈ 50.26548 or 16pi

Answer:

Hey bu dosnt mantıklı, İngilizce formatı var mı? anlayabilirsem yardım edebilirim.

Teşekkürler!!

Step-by-step explanation:

Answer:

Shindeu NANI?!?

Step-by-step explanation:

Answer: X=0

Step-by-step explanation:

Answer:

What is the question?????

Answer:

C. 3n(6) + (6 – 2)

Step-by-step explanation:

C. 3n(6) + (6 – 2) has a coefficients, a product and a sum

Coefficients = 3

3 is the coefficients of n

Product means multiplication

3n(6) = product of 3n and 6

Sum means addition(+)

3n(6) + (6 – 2) = the addition of 3n(6) and (6 - 2)

3n(6) + (6 – 2)

= 18n + (4)

= 18n + 4

Answer:

tall candles = 39

Short candles = 52

Step-by-step explanation:

let tall candles be x

and short candles be y

No. Of candles sold = x + y =91

Money made from candles will be equal to = 8x + 5y = $572

These both are simultaneous linear equations.

x + y =91 ( multiply by 5)

5x + 5y = 455

8x + 5y = $572

Subtract them:

-3x = -117

x = -117/3

x = 39

put value of x in

x + y = 91

39 + y = 91

y = 91 - 39

y = 52

x shows tall candles so they are 39

y shows short candles so they are 52

Answer:

acute scalene

Step-by-step explanation:

Hope it helps you in your learning process.

The triangle with no sides congruent and all angles less than 90° is called an acute scalene triangle option (C) is correct.

In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.

We have a statement:

A triangle with no sides congruent and all angles less than 90° is called a __________ triangle.

As we know, an acute scalene triangle is a triangle with no congruent sides and all angles smaller than 90 degrees.

Also,

Thus, the triangle with no sides congruent and all angles less than 90° is called an acute scalene triangle option (C) is correct.

Learn more about the triangle here:

brainly.com/question/25813512

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Answer:

Step-by-step explanation:

[tex]46.2 \: {ft}^{2} [/tex]

Yha it is bad question :)

I hope that is useful for you

Answer:

35

Step-by-step explanation:

hi you would use the equation 1/2 b *h which is = to 1/2*14*5 which equals 35. Hope this helps thanks :)