A scientist who studies teenage behavior was interested in determining if teenagers spend more time playing computer games then they did in the 1990s. In 1990s, the average amount of time spent playing computer games was 10. 2 hours per week. Is the amount of time greater than that for this year? what is the parameter?.

Answer:

x=4

Step-by-step explanation:

5x+1/3=7

times by 3

5x+1=21

take away 1

5x=20

divide by 5

x=4

Answer:

no solutions

Step-by-step explanation:

i guess   im

Answer:

ratio of boys to girls is

20 : 18

or

10 : 9

Step-by-step explanation:

Answer:

2/5

Step-by-step explanation:

0.4 = 4/10 which in simplest form is 2/5

Answer:

2/5

Step-by-step explanation:

Answer:

80 square feet

Step-by-step explanation:

You can split it into a rectangle and a triangle. The area of the rectangle would be 2 * 16 = 32 square feet.

Next, you need to find the height of the triangle. To do this, you can split the triangle into two right triangles and use the pythagorean theorem to find the height. The dimensions of one of the right triangle is 8 for one of the legs and 10 for the hypotenuse. Using the pythagorean theorem, 8^2 + b^2 = 10^2, which is 64 + b^2 = 100, so b^2 = 36 and b = 6. This means that the height is 6. Now, you find the area of the triangle and you get 16 * 6 / 2 = 48.

Adding the area of the rectangle and the triangle: 32 + 48 = 80

Not sure why that's not an answer choice, I'm fairly confident it's right.

False. The triple exponential smoothing method does consider seasonality variations in the analysis of the data, along with trend and level components, to provide accurate forecasts.

The statement is false. Triple exponential smoothing, also known as Holt-Winters method, is a time series forecasting method that incorporates trend and seasonality variations in the analysis of the data, but it does not specifically use seasonality variations.

Triple exponential smoothing extends simple exponential smoothing and double exponential smoothing by introducing an additional component for seasonality. It is commonly used to forecast data that exhibits trend and seasonality patterns. The method takes into account the level, trend, and seasonality of the time series to make predictions.

The triple exponential smoothing method utilizes three smoothing equations to update the level, trend, and seasonality components of the time series. The level component represents the overall average value of the series, the trend component captures the systematic increase or decrease over time, and the seasonality component accounts for the repetitive patterns observed within each season.

By incorporating these three components, triple exponential smoothing can capture both the trend and seasonality variations in the data, making it suitable for forecasting time series that exhibit both long-term trends and repetitive seasonal patterns.

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The observed percentage of aces (one dot) being 5 out of 36 rolls is approximately 13.89%. This means the observed percentage is about 1.7 standard errors below the expected value.

To determine the number of standard errors, we need to compare the observed percentage with the expected value and calculate the standard error.

The expected value of rolling a fair die is 1/6 or approximately 16.67% for each face (ace to six). In this case, the expected value for the number of aces in 36 rolls would be (1/6) * 36 = 6.

To calculate the standard error, we use the formula:

Standard Error = √(p * (1 - p) / n),

where p is the expected probability of success (ace) and n is the number of trials (rolls).

In this case, p = 1/6 and n = 36. Plugging in these values, we can calculate the standard error.

Once we have the standard error, we can determine the number of standard errors the observed percentage deviates from the expected value by dividing the difference between the observed and expected values by the standard error.

In this case, the observed percentage of aces is approximately 2.78% (16.67% - 13.89%). Dividing this difference by the standard error will give us the number of standard errors, which is approximately 1.7. Therefore, the observed percentage is about 1.7 standard errors below the expected value.

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The complete question is:

A fair die is rolled 36 times. If there are 5 aces (one dot), that means the observed percentage of aces is about _____ standard errors ____ the expected value.

Choose the answer that fills in both blanks correctly.

Group of answer choices

3.9, below

2.1, above

1.7, above

0.4, below

Walking is not safe on the path whenever rabbits have been seen in the area, and berries are ripe along the path. This is formalized by using the →(if-then) and ∧(logical and) operators.

Given information and corresponding atomic propositions:

We need to formalize the given statements in terms of atomic propositions r, b, and w, which are defined as follows:

r: Rabbits have been seen in the area.

b: Berries are ripe along the path.

w: Walking on the path is safe.

Now, let us formalize each of the given statements in terms of these atomic propositions:

a) Berries are ripe along the path, but rabbits have not been seen in the area.

b: Rabbits have not been seen in the area, and walking on the path is safe, but berries are ripe along the path.

c: If berries are ripe along the path, then walking is safe if and only if rabbits have not been seen in the area.

d: It is not safe to walk along the path, but rabbits have not been seen in the area, and the berries along the path are ripe.

e) For walking on the path to be safe, it is necessary but not sufficient that berries not be ripe along the path and for rabbits not to have been seen in the area.

Walking is not safe on the path whenever rabbits have been seen in the area, and berries are ripe along the path.

The formalizations in terms of atomic propositions are:

a) b ∧ ¬r.b) ¬r ∧ w ∧

b.c) (b → w) ∧ (¬r → w).

d) ¬w ∧ ¬r ∧

b.e) (¬r ∧ ¬b) → w.b ∧

Berries are ripe along the path, but rabbits have not been seen in the area.

This is formalized by using the ∧(logical and) operator.

(¬r ∧ ¬b) → w: It means For walking on the path to be safe, it is necessary but not sufficient that berries not be ripe along the path and for rabbits not to have been seen in the area.

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Answer:

what is

Step-by-step explanation:

the the 3 4 4

Answer:

The reciprocal is 1/0.75. Using a calculator, the decimal form can be found by performing the operation: 1 divided by 0.75 ...

Answer:

The answer would have four decimal places and this is because when multiplying figures with decimals, the final result (the product) usually has the combination of decimal places of all values multiplied. Since 3.93 has TWO decimal places and 0.07 has TWO decimal places as well, the product of both numbers would have a combined total of FOUR decimal places.

So the correct answer is not 4, but rather the answer is 0.2751 (with FOUR decimal places)

Step-by-step explanation:

trust.

Answer:

\(\boxed{\frac{1}{2} }\)

Step-by-step explanation:

Let the assistants be x

Condition:

Ratio is also "division"

So,

\(\frac{x}{players} = \frac{1}{6}\)

=> Where players = 36

=> \(\frac{x}{36} = \frac{1}{6}\)

Multiplying both sides by 36

=> x = 6

So,

Assistants = 6

Ratio of coaches to assistants = 3 : 6

=> 1 : 2

In Fraction form

=> \(\frac{1}{2}\)

F) 1/2

Because no. of players= 36

Since ratio of team assistant to players is 1:6

Let no of assistant be X

X/36 = 1/6

X= 6

No of assistant= 6

Ratio of coach to assistant= 3/6=1/6

= 1:6

The source of the force in the gas sample is; The force is composed of the sum of the collisions only between the gas molecules and the container

We are given that;

Pressure = Force /Area

Now, for any gas sample, force is defined as basically the force exerted by the gas molecules when they strike the surface and bounce back inside the container where they are located.

Now, from the definition above we can conclude that the source of the force in the gas sample will be The force is composed of the sum of the collisions only between the gas molecules and the container

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Answer

THE ANSWER IS C

Step-by-step explanation:

the difference between a statistic and a parameter is that a statistic is calculated using a sample of data while a parameter is calculated using the entire population data.the correct option is a. Statistic.

The underlined value in the statement given is a statistic. A statistic is a measure that is calculated using a sample of data, whereas a parameter is a measure that is calculated using the entire population data.

The percentage of respondents who reported using alcohol within the past month is a statistic. It is obtained from a survey on substance abuse involving only full-time college students aged 18 to 22 years.

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She can only move a certain distance in three seconds, with a lower distance of 33.45 feet and a upper distance of 43.45 feet.

The first three seconds of a race saw a runner's speed rapidly grow.

The time is therefore 3 seconds.

The table provides her speed at half-second intervals.

We are aware,

Speed = Distance / Time

Similarly

Distance = Speed × Time

t equals 0.5 seconds

Then, the lower distance traveled overall is equal to 0.5(0 + 6.7 + 9.2 + 14.1 + 17.5 + 19.4).

Terms are multiplied and added.

= 0.5 × 66.9

= 33.45 feet

The upper distance traveled is equal to 0.5 (6.7 + 9.2 + 14.1 + 17.5 + 19.4 + 20)

= 0.5 × 86.9

= 43.45 feet

As a result, Her lower distance in three seconds is therefore 33.45 feet, and her upper distance in three seconds is 43.45 feet.

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Answer:

19.5552

Step-by-step explanation:

34.92 x 0.56

Use calculator or use long multiplication.

    3492

       ×56

  20952

+17460  

195552

How many numbers are after the point on both of the numbers?

2 each. 2 + 2 = 4

We will take our result 4 points back or divide it by 10^4

195552 / 10000 = 19.5552

All are the exponential function.

Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. c is the base and x is the power.

1.  y = f(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

2.  y = h(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

3.  y = g(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

4.  y = k(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

Thus, all are the exponential function.

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The total number of pounds in the case at the start of Day 4 would be 12.50 pounds found by using an arithmetic operation.

Arithmetic operations refer to the basic mathematical operations used to perform calculations involving numbers. These operations include Addition, Subtraction, Multiplication, Division, Exponential, Modulo.

According to the given information:

Based on the information provided, Sarah's list shows the number of pounds she added to the deli case each day. According to her list:

Day 1: 6 pounds

Day 2: 10.60 pounds

Day 3: 0.5 pounds

So the total number of pounds Sarah added to the case from Day 1 to Day 3 is 6 + 10.60 + 0.5 = 17.10 pounds.

Since Sarah's manager's list shows the number of pounds sold from the case each day, and no information about the pounds sold on Day 4 is given, we can assume that no pounds were sold on Day 4.

Therefore, at the start of Day 4, the total number of pounds in the case would be the initial 12 pounds plus the pounds added by Sarah on Day 3, which is 0.5 pounds. So the total number of pounds in the case at the start of Day 4 would be 12 + 0.5 = 12.50 pounds.

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It took both Sandy and Tom 54 seconds to cover the same distance.

We can set up an equation based on their relative speed

Take the supposition that Tom needs "t" seconds to travel the distance. Sandy started jogging 12 seconds before Tom, so it will take her "t + 12" seconds longer to complete the same distance.

To determine the distance traveled by Sandy, multiply her speed (7 meters per second) by her time (t + 12) seconds. Tom's distance traveled may be determined by dividing his speed (9 meters per second) by his time (t) seconds.

Equating the distances covered by Sandy and Tom:

7(t + 12) = 9t

Expanding the equation:

7t + 84 = 9t

Subtracting 7t from both sides:

84 = 2t

Dividing both sides by 2:

t = 42

Tom traveled the distance in 42 seconds as a result. We add the 12-second lead Sandy had to determine the time it took for both Sandy and Tom to travel the same distance:

t + 12 = 42 + 12 = 54

So, it took both Sandy and Tom 54 seconds to cover the same distance.

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Answer:

p = \(\frac{q-5r}{2}\)

Step-by-step explanation:

Given

2p + 5r = q ( subtract 5r from both sides )

2p = q - 5r ( divide both sides by 2 )

p = \(\frac{q-5r}{2}\)

The fourth choice. For example, (x+2)(x-2)>0 we'll get x>2 or x<-2 because whenever you substitute x>2 for example x = 3, the value will be higher than 0 itself.

If we substitute x = 3 (for x>2)

We'll get (3+2)(3-2)>0

5(1)>0

5>0 The statement is true.

If we substitute x = -3 (for x<-2)

We'll get (-3+2)(-3-2)>0

-1(-5)>0

5>0 The statement is true.

We don't say x>2 AND x<-2, In math, we only say x>2 OR x<-2

Answer:

x >2 and x < -2

Step-by-step explanation:

The line on the right starts on -2 and goes towards -10

So ; x is x < -2

The line on the right starts on 2 and goes towards 10

So ; x is  x >2

\(y = \frac{1}{x - 3} + 7\)

\(x = \frac{1}{y - 3} + 7\)

\(x - 7 = \frac{1}{y - 3} \)

\(y - 3 = \frac{1}{x - 7} \)

\(y = \frac{1}{x - 7} + 3\)

Answer:

bc+ad=b

or,ad=b-bc

or,a=(b-bc)/d

Answer & Step-by-step explanation:

Ok, so to solve for a in this equation means that we need to write the equation from the point of view of a, instead of b, which is the way it is currently written.

bc + ad = b

The first thing to do is isolate a, we do this by dividing every term in this by a.

a = bc/a + ad/a + b/a

a = d(bc + b)

Now, we need to divide d from the equation.

Answer:

3

Step-by-step explanation:

Answer: A, C, 57

Step-by-step explanation:

I multiply by 0.40 for the first one, and then multiply by 1.0625. 0.40 = 40% and multiplying by 1.0625 is the same as adding 6.25%. For the second, I multiply by 0.70 because that is 70%. For the last, I multiply by 0.95 for the same reason.

Answer:

13,15,17,19,21

Hope I helped! ☺

Answer:

The statement "The value of f(–10) = 82" is not true. To find the value of f(–10), we substitute –10 for x in the equation:

Step-by-step explanation:

The statement "The value of f(–10) = 82" is not true. To find the value of f(–10), we substitute –10 for x in the equation:

f(–10) = (–10)^2 – 5(–10) + 12 = 100 – (–50) + 12 = 162

The statement "The graph of the function is a parabola" is true. Because the equation of the function is of the form f(x) = ax^2 + bx + c, where a, b, and c are constants and a is not equal to 0, the graph of the function is a parabola.

The statement "The graph of the function opens down." is true. The coefficient of x^2 is a positive value, which means the parabola opens down.

So, the true statements are

The graph of the function is a parabola.

The graph of the function opens down.

The graph does not contain the point (20, –8)