The language arts teacher wants to know whether the students in the entire school prefer a debate or an speech. The teacher draws a random sample from the following groups:

All teachers in the school
All boys in each grade
All students in the speech club
All students in each grade
Which group best represents the population she should take a random sample from to get the best results for her survey? (5 points)

a
All teachers in the school

b
All boys in each grade

c
All students in the speech club

d
All students in each grade

Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population? (5 points)

a
Yes, it is a valid inference because his classmates make up a random sample of the students in the school

b
Yes, it is a valid inference because he asked all 26 students in his science class

c
No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class

d
No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
A researcher posts a magazine advertisement offering $30 in exchange for participation in a short study. The researcher accepts the first three people who respond to the advertisement. Which of the following statements is true about the sample? (5 points)

a
It is not a valid sample because it is not a random sample of the population.

b
It is a valid sample because the first three people were selected to participate.

c
It is a valid sample because money was offered to participants.

d
It is not a valid sample because it is only a short study.

Answer:

B. The probability of landing on yellow is less than the probability of landing on blue.

Step-by-step explanation:

because you have a 2/8 chance or 25% chance of landing on yellow whereas you have a 3/8 or 37.5% chance of landing on blue

Answer: B: The probability of landing on yellow is less than the probability of landing on blue.

Step-by-step explanation:

Answer:

negative number

Step-by-step explanation:

Answer:22

Step-by-step explanation: if both lines are parallel then the angles opposite from each other on the transversal are equivalent.

Answer:

is try ur hardest

Step-by-step explanation:

Answer:

$396

Step-by-step explanation:

First we need to find the price after the 10 percent discount. In order to do that we have to multiply 400 by 0.10 which is the same as 10 percent. When we put that in a calculator we get 40, now we have to subtract the original price of $400 by $40 which gives us $360. To find the price after the markup we multiply 360 by 0.10 which gives us 36, all we have to do is add the 36 to 360 to get our final answer of $396.

Answer:D

Step-by-step explanation:

Answer: 10/9 would be in frac form then to reduce it would be 1.11111 repeating

Answer:0.607142857

Step-by-step explanation:

Answer:

56 yards, 47 forward, 9 backwards.

Step-by-step explanation:

32 forward, 7 back, 15 forward, 2 back, add these all up to see how many yards the ball traveled for 56.

Answer:

34/23 as a decimal rounded to the nearest tenth is approximately 1.48

Step-by-step explanation:

Answer:6

Step-by-step explanation: thats what i got

Answer:   y=x (to the power of 3) + 12

y= -52x

Step-by-step explanation:

Answer: 99

Step-by-step explanation:

11x9=99

Answer: 1526.04 cubic yards

Step-by-step explanation: 3.14 x (9)^2 x 6
=81 x 6 x 3.14

= 1526.04 cubic yards

Answer: 1526.04 cubic yards

Step-by-step explanation: 3.14 x (9)^2 x 6

=81 x 6 x 3.14

= 1526.04 cubic yards

Answer: times 7

Step-by-step explanation:

The missing factor is 7.

Prime Factorisation is the method of breaking down numbers into their prime factors. The part of the prime factorisation shown by Mr Jackson is 2 to the power 3 which means= 2.2.2 which is equal to 8.

8 times 7 is 56. So the one factor missing is 7.

Learn more about prime factorisation:

https://brainly.com/question/17315720

Answer:

1) 1      

2) 5

3) 36

Answer:

1 ----> 3

6 ----> 9

5 ----> 15

12 ----> 36

Step-by-step explanation:

MULTIPLY BY 3

Answer:

the first or last one

Step-by-step explanation:

you can tell this is right by the fact they are going from 0-8 the approximate time for the pizza to have been in the oven as told in the first line of the question. I cannot honestly tell the difference between the first or last one, so take a guess from there. Hope this helps =]

Answer:

Step-by-step explanation:

Answer: Distance (in miles) = 8000 x Number of years

So the table would look like this:

Number of Years Distance (in miles)

3 24000

5 40000

6 48000

To plot the ordered pairs, you would need an X,Y coordinate system, where the x-axis represents the number of years, and the y-axis represents the distance in miles. Then, you would place a point on the coordinate system for each of the ordered pairs (3, 24000), (5, 40000), and (6, 48000).

Step-by-step explanation:

Answer:

Years Distance (in miles)

3 24,000

5 40,000

6 48,000

Step-by-step explanation:

To plot these points on a graph, we would first create a coordinate plane with the years on the x-axis and the distance on the y-axis. Then we would plot the points (3, 24,000), (5, 40,000), and (6, 48,000) by finding their corresponding positions on the x and y axes, connecting them and voila, the graph would be ready.

The points indicate that Keiko drove 24,000 miles in 3 years, 40,000 miles in 5 years and 48,000 miles in 6 years, it's a linear correlation between the years and the distance that she drove, and the slope of the line is 8,000 miles per year.

I wish i could help you but i can't

sorry

Answer: O) increase of twenty OR 50% increase O) increase of 10 OR 40% increase N) decrease of 34 OR 68% decrease B) decrease of 6 OR 75% decrease

V) decrease of 40 OR 10% decrease E) decrease of 17 OR 85% decrease L) decrease of 7 OR 70% decrease O) decrease of 3 OR 10%

D) 80% increase S) 15% decrease L) 5% increase S) 28% decrease

Answer:the decimal value of our given fraction is approximately 2.26 to the nearest hundredth.

Answer:

Volume is the amount of space something(object/substance) takes up.

A steel bar is 2.2 m long and has a diameter of 5 cm. Find the volume of the bar in [tex]cm^{3}[/tex]

Length of steel bar =2.2 m-->220 cm

Radius=5/2===>2.5 cm

Step-by-step explanation:

Volume of steel bar =[tex]\pi[/tex][tex]r^{2}[/tex]h

=(3.14)[tex](2.5)^{2}[/tex](220)

=4317.5 [tex]cm^{3}[/tex]  

Answer: 10

Step-by-step explanation:

I’m not sure where the N fits into the equation, but if you are finding the amount that w holds, 10 is correct.

Reverse the equation: 20=15+.5w

Now move .5 over and do 20-15 which equals 5.
.5w=5

5 divided by .5 gives you the answer of 10. 10•.5=5 which means 10 is your answer!

Answer:

w = 10

Step-by-step explanation:

Rectifying mistake in question,

→ Value of w in 0.5w + 15 = 20.

Given equation,

→ 0.5w + 15 = 20

Now the value of w will be,

→ 0.5w + 15 = 20

→ 0.5w = 20 - 15

→ 0.5w = 5

→ w = 5/0.5

→ [ w = 10 ]

Hence, the value of w is 10.

Answer:

$3.456 billion

Step-by-step explanation:

To predict how much money the movie will make in ticket prices over the opening weekend, we can use the following information:

The average movie ticket price is $9

There are approximately 1.2x10^6 movie screens that will be playing the movie

For each screen, there are 250 seats and it is expected that each showing will be sold out

There are 8 showings per screen over the opening weekend

To calculate the total amount of money the movie will make in ticket prices over the opening weekend, we can use the following formula:

total revenue = (average ticket price) x (number of screens) x (number of seats per screen) x (number of showings per screen) x (number of days)

total revenue = $9 x 1.2x10^6 x 250 x 8 x 3

total revenue = $3,456,000,000

Therefore, the movie is expected to make $3.456 billion in ticket prices over the opening weekend.

Answer:

Step-by-step explanation:

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Answer:

Area of it should equal 57

Step-by-step explanation:

A = [tex]\frac{a+2}{2}[/tex]h = [tex]\frac{3+16}{2}[/tex].6 = 57

did it help or no?

Answer:95 yards

Step-by-step explanation:

Answer:

Well since they both have the same variable you can just add 2.8 and 5.3.

2.8 + 5.3 = 8.1

And since their are 2 variables left that are both t, you can just add them bothe to the answer as 8.1t squared!

8.1t squared

Step-by-step explanation:

Hope it helps! =D

Answer:

2 . 8t

+5 . 3t

_______

8 . 1t

Answer:

a:11

B:33

D: y=11x

E:y=11x256=1816

Positive

Step-by-step explanation: