Dana plans to use a survey of 60 randomly selected students at her school to predict the percentage of the 900 students at her school who will attend next week's school dance. How can Dana change her data collection plans to make her prediction closer to the actual result?

Answers

Answer 1

Answer:

See below ~

Step-by-step explanation:

Dana takes a survey of 60 students out of 900 total to see how many will attend the dance.

Based on whatever result she gets out of the 60 students, she can take that number and multiply it by 15 to get a closer prediction to the actual result.

This is because 60 x 15 = 900We are basic taking a ratio of the smaller portion so we can estimate the value of the larger group

Related Questions

write 0.004 as a fraction in words.

Answers

Step-by-step explanation:

0.004 as a fraction is 1/250

one over two hundred and fifty

Answer:

one over Two hundred and fifty

Step-by-step explanation:

As we can see the 4 is 2 zeros away from the decimal point. This means that 4 must be in the thousandths place.

Therefore our answer is four thousandths.

Remember that we it is behind the decimal point, it becomes ths at the end.

To change this into a fraction we should get 4/1000 by taking the words literally.

Dividing both sides by 4 gives us 1/250

1/250 in words is one over Two hundred and fifty

I guess

Brainliest if helped

What is the completely factored form of the expression 16x2 8x 32? 4(4x2 2x 8) 4(12x2 4x 28) 8(2x2 x 4) 8x(8x2 x 24)

Answers

An expression is defined as a set of numbers, variables, and mathematical operations. The factored form of the expression 16x²+8x+32 is 8(2x²+x+4).

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The completely factored form of the expression can be written as,

[tex]16x^2+8x+32\\\\=8(2x^2+x+4)[/tex]

Thus, the factored form of the expression 16x²+8x+32 is 8(2x²+x+4).

Learn more about Expression:

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Answers

An angle on a straight line is 180 degrees

⇒ this angel is made up of two angles with measures

⇒ 'x-7' and '57'

⇒ when these two angles are added up they are equal to the larger

angle that is 180 degrees in measure

Let's set up a mathematical equation based on the information and deduction:

[tex](x-7)+57=180\\x-7+57 = 180\\x + 50=180\\x = 130[/tex]

Answer: The value of x is 130

Hope that helps!

PLEASE HELP URGENT
Maggie is walking her dog. She walks 2/3 mile in 7/10 of an hour. At this same rate, what distances can she walk? Select all that apply.

5/7 mile in 3/4 of an hour

7/10 mike in 2/3 of an hour

10/3 miles in 1 1/2 hours

32/21 miles in 1 3/5 hours

5/3 mikes in 1 9/10 hours

Answers

Assuming she can only walk 2/3 of a mile in 7/10 we will find the solution.
We want to find the mile per hour rate (mi/hr).
That is 2/3 divided by 7/10
Which is 2/3 times 10/7
Numerator is 20
Denominator is 21
So 20/21 miles per hour. .95238009…
Convert each answer (flipping the second fraction since it is division)
5/7 times 4/3 is 20/21
7/10 times 3/2 is 21/20
10/3 divided by 1.5 hours which is 3/2.
So 10/3 times 2/3 is 20/9
32/21 divided by 1 3/5 hours which is 5/5 plus 3/5 (add to get 8/5)
So 32/21 times 5/8 is 160/168
5/3 times 10/9 is 50/27
In order of answers
20/21
21/20
20/9
160/168
50/27
Original was 20/21 which is less than 1 (21/21)
So yes to 20/21
So no to 21/20, 20/9, 50/27
To see if 160/168 works simplify.
160/168 gives 80/84 gives 40/42 gives 20/21 when dividing by 2.
So 160/168 works.

So yes to
5/7 mile in 3/4 of an hour
32/21 miles in 1 3/5 hours

So no to
7/10 mile in 2/3 of an hour
10/3 miles in 1 1/2 hours
5/3 miles in 1 9/10 hours

Please mark as the best!

how many days are in 3 weeks??

Answers

Answer:

Step-by-step explanation:

because 7 day or in a week so 7 time 3 = 21

Answer:

Step-by-step explanation:

Becasue there are 7 days in a week, So use and time 7x3 and you will get 21 multiplication.

What is the common denominator of 2/5 and 3/10

Answers

Answer:

Answer:

Step-by-step explanation:

3/10~3/10

2/5

5x2=10

2x2=4

2/5=4/*10*

The common denominator is 10

A space ship travels at 8 2 miles per hour and traveled for 81 8 hours.
Select the answer that represents how many miles the space ship traveled.

Answers

Answer:

Step-by-step explanation:

8^2 m/hr * 8^18 hr = 8^(2+18) = 8^20 miles

A perfect square is a number that is the square of a whole number. For example, 25 is a perfect square because it is the square of 5: 5 × 5 = 25. How many perfect squares are greater than 0 but less than 1000?

Answers

Perfect squares are squares of integers and since 961 is the square of 31, it shows that there are 31 perfect squares greater than 0 but less than 1000

What are perfect squares?

A perfect square is a number that is the square of a whole number. For instance, 36 is a perfect square being the square of 6.

Other perfect squares that are between 0 and 1000 are 1, 4, 9, 16, 25, 3649, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324... 961.

Since 961 is the square of 31, it shows that there are 31 perfect squares greater than 0 but less than 1000.

Learn more on perfect square here: https://brainly.com/question/26119721

Answer:

Since 961 is the square of 31, it shows that there are 31 perfect squares greater than 0 but less than 1000.

All the dimensions of a pentagon were multiplied by the same factor, and the area of the figure changed by a factor of 25. By what factor were the dimensions of the pentagon multiplied?

12. 5

625

5

50

Answers

5

reason is because if you’re pentagon has lines of 5 then the area would be 25

For problem 8, find the area of the shaded region. The polygon is a regular polygon. please show work.

Answers

Answer:

34.7791 [unit²].

Step-by-step explanation:

1) area of the circle is:

πr²;

2) area of the regular polygon is:

6*r²√3*0.25=1.5√3r²;

3) the required area:

πr²-1.5√3r²=r²(π-1.5*√3)=64*(3.1415-1.5*1.7321)=34.7791

The baseball team in your community is playing for the championship. They will play seven games against the opposing team.
a. If the probability for your team to win is 74%, what is the probability for the other team to win?
b. Is this a binomial distribution? Why or why not?
c. What is the probability that your team will win 4 of the 7 games?

Answers

Answer:

a. 26%

b. It's a binomial distribution because the competition will only have two outcomes, win or lose.

c. 4/7 or 57%

Step-by-step explanation:

Hope this helps :)

Put the following items in order from most expensive to least expensive. item base price change direction blender $29.73 9% markdown hat $14.16 77% markup ink $20.17 27% markup heater $28.46 22% markdown a. blender, heater, ink, hat b. blender, ink, hat, heater c. ink, hat, blender, heater d. ink, heater, blender, hat please select the best answer from the choices provided a b c d

Answers

the answer is d . ♾♾♾

My sister is 13 years old. My brother says that his age minus 14 is equal to my sisters age. How old is my brother?

Answers

Answer:

Brother's age = 13 years

Step-by-step explanation:

Sister's age = 13 year

Brother's age = x

Brother's age will be equal to the Sister's age when x-14

According To The Question

[tex]x - 14 = 13 \\ x = 13 + 14 \\ x = 27[/tex]

Therefore, Brother's age will be 27 years

!!PLEASE PLEASE PLEASE MARK ME THE BRAINLIEST!!

please get this righttt!

Answers

Answer:

5/9

Step-by-step explanation:

this is the answer kinda not explainable so yeah

Find the slant height?

Answers

Answer:

59.94

Step-by-step explanation:

Slant height = √(height)² + (1/2 base)²

Sh = √53² + 28²Sh = √2809 + 784Sh = 59.94

During geometry class, students are told that δtsr ≅ δusv. marcus states that δtsr is mapped to δusv by performing a rotation about point s. sam states that δtsr is mapped to δusv by a reflection across the line that goes through point s. determine if either student is correct. marcus is correct. sam is correct. both students are correct. neither student is correct.

Answers

Transformation involves changing the position of a shape through translation, dilation, rotation and reflection.Marcus's claim is correct.

What is transformation?

A process by which one figure, expression, or function is converted into another one of similar value.

The triangles are given as: ΔTSR and ΔUSV

By comparison, we can see that point S is on both triangles, and this point on both triangles corresponds.

So, to map ΔTSR to ΔUSV, then ΔTSR must be rotated about point S to ΔUSV or rotate ΔUSV about point S to ΔTSR.

Hence, Marcus is correct, and Sam is not.

Answers

Answer:

Step-by-step explanation:

This is because to find out if a table is proportional you have to do y divided by x. Whatever table has the same answer on all of the table sections when you divide y by x, that is proportional.

A) Convert the exponential function, 12^3=x^4 y^3 z^6, to its corresponding logarithmic function.
B) Write the log form from Part A into the expanded log form. **expression must be fully expanded for full credit**

Answers

The logarithmic function is ㏒ 12³ = ㏒ x⁴ · y³ · z⁶. The equation into the expanded logarithmic form is 3 · ㏒ 12 = 4 · ㏒ x + 3 · ㏒ y + 6 · ㏒ z.

How to apply logarithms on a exponential function

Logarithms are the reciprocal of exponential functions. In this question we must apply logarithms and its properties to obtain a linear-like expression in the following lines. The logarithm properties are summarized below:

㏒ₐ (b/c) = ㏒ₐ b - ㏒ₐ c (1)

㏒ₐ (b · c) = ㏒ₐ b + ㏒ₐ c (2)

㏒ₐ bⁿ = n · ㏒ₐ b (3)

a) To obtain the corresponding logarithmic function we apply logarithms on both sides of the expression:

㏒ 12³ = ㏒ x⁴ · y³ · z⁶ (4)

The logarithmic function is ㏒ 12³ = ㏒ x⁴ · y³ · z⁶. [tex]\blacksquare[/tex]

b) The expanded logaritmic form of (4) consists in the addition and subtraction of logarithms of non-power numbers, whose formed could be found, if possible, by logarithm properties:

㏒ 12³ = ㏒ x⁴ · y³ · z⁶

㏒ 12³ = ㏒ x⁴ + ㏒ y³ + ㏒ z⁶

3 · ㏒ 12 = 4 · ㏒ x + 3 · ㏒ y + 6 · ㏒ z

The equation into the expanded logarithmic form is 3 · ㏒ 12 = 4 · ㏒ x + 3 · ㏒ y + 6 · ㏒ z. [tex]\blacksquare[/tex]

To learn more on logarithms, we kindly invite to check this verified question: https://brainly.com/question/24211708

Calculate the perimeter of the triangle
below.
24cm
32cm

Answers

The perimeter 2s = 32

So, s = 16.

One side is 15.

Let the second side be x.

So, the third side = 32 - 15 - x = 17 - x.

Area = 24 cm^2

So, 24^2 = s(s - 15)(s - x)(s - 17 + x)

So, 576 = 16(16 - 15)(16 - x)(16 - 17 + x)

So, 576 = 16*1(16 - x)( - 1 + x)

So, 576/16 = (16 - x)( - 1 + x)

So, 36 = - 16 + 17x - x^2

So, x^2 - 17x + 52 = 0

So, (x - 13)(x - 4) = 0

So, x = 13 or x = 4

So, the lengths of the remaining two sides are 4 cm and 13 cm.

PLS HELP!!! No links pls and Ty <333

Sid is making a pizza. The diameter of the pizza is 15 inches.
What is the area of the pizza (use 3.14 for pi and round to the nearest
tenth)?

Answers

Step-by-step explanation:

Your diameter is 15 and a diameter is a whole line, what your going to do it divide the 15 by 2, than mutiply the answer by 3.14 and than round ur answer :)

Just answer the question RN im in a rush

Answers

Answer:

https://brainly.com/question/27407610

Step-by-step explanation:

A rectangle has vertices (–1, 1), (–4, 1), (–1, 3), and (–4, 3). If the rectangle is reflected over the y-axis, what algebraic rule can be used to find each of the new vertices?

Select one:

A. (x,y)→(−x,−y)

B. (x,y)→(–y,–x)

C. (x,y)→(y,−x)

D. (x,y)→(−x,y)

Answers

Answer:

D. (x,y)→(−x,y)

Step-by-step explanation:

Reflecting OVER the Y axis means it will end up on the other side of the Y axis line. The Y coordinates remain unchanged while the X coordinates invert. Attaching a crude diagram to help you picture it.

4x^2- 4x-1=0 i need the awnser

Answers

Answer:

See below

Step-by-step explanation:

Do you know how to use the Quadratic Formula with

a = 4 b = -4 c = -1

results in x = 1/2 +- sqrt(2) / 2

Find the GCF of 60, 96, and 156.

Answers

Answer:

GCF = 12

for the values 60, 96, 156

Step-by-step explanation:

Solution by Factorization:

The factors of 60 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

The factors of 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96

The factors of 156 are: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156

Then the greatest common factor is 12.

In this figure, 12.2% of the area is painted blue.

How much of the area is painted blue?

1.22 cm²

3.05 cm²

4.27 cm²

5.49 cm²

Answers

The area of the figure painted blue, which is 12.2% of the total area is: 4.27 cm².

What is the Area of a Triangle and Square?Area of triangle = 1/2(b)(h)Area of Square = s²

The figure is composed of a triangle and a square. Find the area of the figure.

Area of the figure = 1/2(b)(h) + s² = 1/2(5)(4) + 5² = 35 cm²

12.2% of the area of the figure = 12.2/100 × 35 = 4.27 cm²

Therefore, the area of the figure painted blue, which is 12.2% of the total area is: 4.27 cm².

Learn more about area of square and triangle on:

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Can anyone help me with my homework

Answers

Answer:

Below in bold.

Step-by-step explanation:

When x = -3, y = -(-3) - 2 = 3-2 = 1.

When x = 0, y = -0 - 2 = -2.

When x = 4, y = -4 - 2 = -6.

To draw the graph plot the 3 points and you should be able to draw a straight line through them.

Answer:

The first y value with -3, is 1.

The second y value with 0, is -2.

The third y value with 4, is -6.

A graph is shown below.

Step-by-step explanation:

It states that the rule is y = -x-2. So all we do is plug in the values shown in the table.

y = -(-3)-2

y = 1

The first point of intersection is at (-3,1)

y = -(0)-2

y = -2

The second point of intersection is at (0,-2)

y = -(4)-2

y = -6

The third point of intersection is at (4,-6)

So now, we plot the points, and draw a line connecting them all.

340 to nearest hundred

Answers

Answer:

300 - hope this helped :)

Step-by-step explanation:

340 to the nearest hundred

is 300 since thats the closest

A bag contains 4 red, 4 blue, 4green, and 4 yellow marbles. A marbles is randomly pulled from the bag and replaced seven times. The table shows the outcome of the experiment. Which marble color’s observed frequency is closest to its expected frequency?

Answers

Answer:i think that there would not be a frequency because their is an equal chance of anycolr being pulled

Step-by-step explanation:

Can two obtuse angles be supplementary? Why or why not?

Answers

Answer:

No.

Step-by-step explanation:

Two Angles are Supplementary when they add up to 180.

Let us consider the least obtuse angle, i.e., >90

Say 91 and add it to itself.

91+91 =182

This is >180

Hence, two obtuse angles can never be supplementary.

How many outfits can be made from five shirts three pairs of pants and two pairs of shoes?

Answers

Answer:

3*5*2=30

He can make 30 outfits.

Step-by-step explanation:

3*5*2=30

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Dana plans to use a survey of 60 randomly selected students at her school to predict the percentage of the 900 students at her school who will attend next week's school dance. How can Dana change her data collection plans to make her prediction closer to the actual result?​

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Dana plans to use a survey of 60 randomly selected students at her school to predict the percentage of the 900 students at her school who will attend next week's school dance. How can Dana change her data collection plans to make her prediction closer to the actual result?