MATHEMATICS HIGH SCHOOL

Identify the following data set: .... a manager of a movie theater was asking customers at the concession stand how they would rate the theater's staff

Group of answer choices

Population

Sample

Parameter

Statistic

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Question 21 pts
Identify the following data set:

... a survey from Gwinnett County Public Schools, required that all of the teachers fill out the survey about what they thought about Phoenix High School during that year.

Group of answer choices

Population

Sample

Parameter

Statistic

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Question 31 pts
Identify the following numerical values:

....the average of Mr. Winking's 2nd Period AMDM scores on a study abotu the AMDM scores for Gwinnett.

Group of answer choices

Population

Sample

Parameter

Statistic

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Question 41 pts
Identify the following numerical values:

... a study was investigating the average number of students per class at Phoenix High School for a particular mini-semester. The administration ran a report on all of the current classes for that mini-semester to determine the average class had 15 students.

Group of answer choices

Population

Sample

Parameter

Statistic

Answers

Answer 1

Answer:

Answer:

1. Sample

2. Population

3. Parameter

4. Statistic

Step-by-step explanation:

Answer 2

Answer:

Answer:

1. Sample

2. Population

3. Statistic

4. Parameter

Step-by-step explanation:

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A train running at a speed of 108 km/h crosses a pole in 32 seconds . the length of train is ?

Answers

Answer:

Given speed of train = 108 km/hour ⇒ Speed of train = 108 × 5/18 = 30 m/sec Since, we know that Distance = Speed × time ⇒ Distance = 30 × 32 = 960 m ∴ Length of train is 960 m

Step-by-step explanation:

Final answer:

The length of the train is calculated by using the formula 'distance = speed * time'. After converting the speed from km/h to m/s, we find that the length of the train is 960 meters.

Explanation:

To answer your question, we'll need to use the concept of speed in physics. Speed is essentially distance covered per unit of time. Since we are given that the train is running at a speed of 108 km/h and it crosses a pole in 32 seconds, we can use these metrics to find the length of the train, as the train length is the distance covered when the train crosses the pole.

First, we need to convert the speed from km/h to m/s, as we need the answer in a standard form. 1 km = 1000 m, and 1 hour = 3600 seconds. So, 108 km/h = 108 * 1000 m/3600 s = 30 m/s.

Next, we use the formula 'speed = distance/time'. Here, we need to find the distance (or the length of the train), so we rearrange that formula to get 'distance = speed * time'. That means, the length of the train = speed of the train * time taken to cross the pole = 30 m/s * 32 s = 960 m.

So, the length of the train is 960 meters.

Learn more about Finding train length here:

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The revenue, in dollars, of a company that makes toy cars can be modeled by the polynomial 3x^2 + 4x – 60. The cost, in dollars, of producing the toy cars can be modeled by 3x^2 – x + 200. The number of toy cars sold is represented by x.If the profit is the difference between the revenue and the cost, what expression represents the profit?
3x – 260
3x + 140
5x – 260
5x + 140

Answers

Answer:

The expression which represents profit is:

$5x-260$

Step-by-step explanation:

The number of toy cars sold is represented by: x.

Now, the revenue, in dollars of a company is given by the polynomial function:

$R(x)=3x^2+4x-60$

and the cost, in dollars of producing the toy car is given by the polynomial expression:

$C(x)=3x^2-x=200$

Also, let P(x) denote the profit function.

It is given that:

Profit is the difference between the revenue and the cost.

i.e.

$Profit=R(x)-C(x)\n\ni.e.\n\nP(x)=R(x)-C(x)\n\ni.e.\n\nP(x)=3x^2+4x-60-(3x^2-x+200)$

( Now we know that if the sign before the parentheses is negative then the terms inside the parentheses open up with opposite signs)

i.e.

$P(x)=3x^2+4x-60-3x^2+x-200\n\ni.e.\n\nP(x)=3x^2-3x^2+4x+x-6-200$

( Since, on combining the like terms)

i.e.

$P(x)=5x-260$

Hello,

P(x)=3x²+4x-60-(3x²-x+200)=5x-260

Answer C

A line has this equation: y= -9x-2Write an equation for the parallel line that goes through (2, -3).

Answers

Answer:

y = - 9x + 15

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 9x - 2 ← is in slope- intercept form

with slope m = - 9

Parallel lines have equal slopes, thus

y = - 9x + c ← is the partial equation

To find c substitute (2, - 3) into the partial equation

- 3 = - 18 + c ⇒ c = - 3 + 18 = 15

y = - 9x + 15 ← equation of parallel line

How to solve 2^(log(2)3+ log(2)5

Answers

$2^(log_23+log_25)=2^(log_2(3\cdot5))=2^(log_215)=15\n\n---------------------------\n\nfor\ a,b,c\in\mathbb{R^+}\n\nlog_ab+log_ac=log_a(b\cdot c)\n\na^(log_ab)=b$

$2^(\log_23+ \log_25 )=\n 2^(\log_215)=\n 15$

Write four equivalent expressions for each given expression 50-10

Answers

30+10
70-30
20×2
80÷2
The answers to all of these are 40, making it equivalent to 50-10.

Consider therelation {(–4, 3), (–1, 0), (0, –2), (2, 1), (4, 3)}.

Graph the
relation.

State the domain of
the relation.
State the range of
the relation.
Is the relation a
function? How do you know?

Answers

$\{(-4, 3), (-1, 0), (0, -2), (2, 1), (4, 3)\}\n\nthe\ domain:\ D=\{-4;-1;0;2;4\}\n\nthe\ range:\ R=\{-2;0;1;3\}\n\nThe\ relation\ is\ a\ function:\ \nfor\ every\ x\in D\ there\ is\ exactly\ one\ value\ of\ y\in R.$

$The\ graph\ is\ in\ the\ annex.$

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