What formula should I use for this?

You've randomly surveyed some students in your science class to find the number of hours per week they study. What is the mean, based on your sample?

STUDENT HOURS

KATY 5.5

MIKE 4.25

SAM 7.75

HOLLY 3.5

JAKE 6.25

Mean=[tex] \frac{Sum Of Hours}{Number of Students} [/tex]

Sum Of Hours=5.5+4.25+7.75+3.5+6.25=27.25

Number of Students=5

mean=[tex] \frac{27.25}{5} [/tex]

On dividing, 27.25 by 5, we get, 5.45

So, Mean=5.45

Answer: Option (d) : Mean=5..45hours

The statement about the methods is true walkathon to ask teen participants about the ways they volunteer. Then the correct option is B.

Determining the proper option, acquiring evidence, and exploring various options are all steps in the decision-making process.

Jorge wants to find the most popular way for teens to volunteer in the community. He cannot decide between two methods.

Option 1: He will ask every fifth person on each English class roster. This is a biased one because the best one can be skipped.

Option 2: He will attend a walkathon to ask teen participants about the ways they volunteer. Because all the volunteers participated that can be observed.

The statement about the methods is true walkathon to ask teen participants about the ways they volunteer. Then the correct option is B.

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Answer:

Step-by-step explanation:

The answer is 13.72 because 1.4^3=2.744

and 2.744*5=13.72

The total volume when each side is 1.4 units is 13.72 cubic units, option A is correct.

a three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.

The equation V = 5s³ represents the total volume of  5 identical boxes

s represents the each side  length

We have to find the total volume

The value of s is given as 1.4

Plug in s value in V formula

V=5(1.4)³

V=5×1.4×1.4×1.4

V=13.72 cubic units

Hence, the total volume when each side is 1.4 units is 13.72 cubic units, option A is correct.

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Answer:

B

Step-by-step explanation:

The required proportion that predicts the number of jazz songs he has stored on his MP3 player is 3/20 = x / 2000.

proportionality is defined as between two or more sets of values, and how these values are related to each other in the sense are they directly proportional or inversely proportional to each other.

Here,
From the table number of Jazz songs played = 6
Total song played = 40

Total number of songs in mp3 player = 2000
Number of jazz songs in mp 3 player
6/40 = x /2000
3/20 = x / 2000

Thus, the required proportion that predicts the number of jazz songs he has stored on his MP3 player is 3/20 = x / 2000.

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The pond is best described as a rectangle.

The geometric shape that best describes the pond is a rectangle. A rectangle is a quadrilateral with four right angles. Since the pond has all sides of equal length and at least one right angle, it meets the criteria to be a rectangle.

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The geometric shape that best describes the shape of the pond is a square or a rectangle.

Given that the pond is shaped like a quadrilateral with all sides 18 feet long, we can immediately rule out shapes that do not have four equal sides, such as parallelograms, trapezoids, and kites. The fact that the pond has at least one right angle further narrows down the possibilities to shapes that have at least one 90-degree angle.

Since all sides are equal in length, and there is at least one right angle, the pond could either be a square (which has four right angles) or a rectangle (which has four right angles but does not necessarily have all sides equal). However, since it is specified that all sides are 18 feet long, the only quadrilateral that fits these criteria is a square.

Answer:

Step-by-step explanation:

Answer:

24 cubic feet

Step-by-step explanation:

thanks other guy

Answer:

Answer is BCABCABCBC

Step-by-step explanation:

Answer:

The given expression is irrational because one factor is irrational

Step-by-step explanation:

Given the expression

[tex](\sqrt{576})(\sqrt{684})[/tex]

we have to find that the product is rational or irrational.

[tex]\sqrt{576}=\sqrt{26\times 26}=26[/tex]

[tex]\sqrt{684}=\sqrt{2 \times 2 \times 3 \times 3 \times 19}=2\times 3\sqrt{19}=6\sqrt{19}[/tex]

[tex]\text{The square root of 19 is irrational }[/tex]

[tex]\text{The square root of 684 is irrational }[/tex]

Hence, the first factor of the expression is rational and the second factor is irrational therefore the product is irrational.

∴ option 3 is correct

The given expression is irrational because one factor is irrational

Answer:

The given expression is irrational because one factor is irrational

Step-by-step explanation:

Answer:

35(2) - 1/2(15)

Step-by-step explanation:

35(2) + [-1/2(15)] -----> 35(2) - 1/2(15)

take away the unnecessary extra brackets and replace the plus with a minus sign

hope this helps :)

Another way to write Brett’s total number of points on the test is 35(2) - 1/2(15).

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

It is given that:

Brett took a test in which 2 points were earned for each correct response and -1/2 point was earned for each incorrect response.

From the data given in the question:

= 35(2) - 1/2(15)

= 35(2) + [-1/2(15)]

Another way to write Brett’s total number of points on the test:

= 35(2) - 1/2(15)

Thus, another way to write Brett’s total number of points on the test is 35(2) - 1/2(15).

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Answer:

It's 13.0

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

i did the quiz

By Transitive property ∠XYZ = ∠WYT.

The word "transitive" refers to movement. The transitive property of equality is a property that applies when there are three quantities, a, b, and c, and if a is connected to b and b is related to c by the same rule, then a and c are related to each other by the same rule.

Let's think about the numbers a = b and b = c. Because equality has the symmetric characteristic, writing a = b is equivalent to writing b = a. It follows that b = a and b = c. A must equal c and b since the amount b cannot be equal to two separate quantities.

Given:

∠XYZ ≅ ∠​AOB and ∠​AOB ≅ ∠​WYT

As per the Transitive Property

<X = <Y

and ∠Y = ∠X,

then ∠X = ∠Z.

Similarly,

∠XYZ = ∠AOB

and ∠AOB = ∠WYT,

then ∠XYZ = ∠WYT.

Hence, by Transitive property ∠XYZ = ∠WYT.

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Grady's payements or wages for hourly is increased by 8 percent.

A Percentage or percent, a relative value indicating hundredth parts of any quantity.

To calcualte the increase in percentage first we subtract the original value from the new value, then divide the result by the original value. Multiply the result by 100.

According to the given question.

The intial payment for one hour was $10.50

And, after one hour the payment is $11.34

⇒ The increment in the payment  = $11.34 - $10.50 = $0.84

Therefore,

the percent increase in Grady's hourly wage  

[tex]= \frac{increment \ in \ the \ payement}{origibal \ paynent\ } \times 100[/tex]

[tex]= \frac{0.84}{10.50} \times 100[/tex]

[tex]= 0.08 \times 100[/tex]

[tex]= 8\%[/tex]

Hence, Grady's payements or wages for hourly is increased by 8 percent.

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Answer:

D. 2381.89

Step-by-step explanation:

Answer:

D. 2381.89

Step-by-step explanation:

Yes the answer is B

The translated function is f(x) = (x - 1)² + 5.

It is the movement of the shape in the left, right, up, and down directions.

The translated shape will have the same shape and shape.

There is a positive value when translated to the right and up.

There is a negative value when translated to the left and down.

We have,

The vertex of the original function = (0, 0)

The vertex of the translated function = (-1, 5)

Now,

f(x) → f(x + a) represents a horizontal translation of f(x)

If a > 0 then a shift to the right of a units

If a < 0 then a shift to the left of a units

Vertex = (-1, 5)

This means the translated graph has been shifted to 1 unit left.

So,

f(x) = (x - 1)²

Now,

f(x) → f(x) + c represents a vertical translation of f(x)

If c > 0 then a shift up of c units

If c < 0 then a shift down of c units

Vertex = (-1, 5)

This means,

The translated graph has been shifted 5 units up.

So,

f(x) = (x - 1)² + 5

Thus,

The translated function is

f(x) = (x - 1)² + 5

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Answer:

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.

My answer:

a. Carpeting a floor

To carpet a floor, you need to find the area of it so that we can have an appropriate plan to buy material. Hence, it represented by are

b. Fencing a garden

If you want to fence a garden, we need to know the the total length around it or we can say that is the perimeter of the garden. So this situation is represented by perimeter.

Hope it will find you well.