a recent survey polled a sample of male mexican-american adolescents to determine if there is an association between smoking and unhealthy behaviors. below is the data. each boy, age 10-18, was classified according to smoking status and his response to a question asking whether he liked to do risky things. likes risky things doesn't like risky things smoker 45 36 nonsmoker 46 153 a. what proportion of sampled smokers likes risky things?

The probability that exactly 12 of the 15 adult smartphone users use their smartphones in meetings or classes is approximately 0.0040 (rounded to four decimal places).

We can solve this problem using the binomial probability formula:

[tex]P(X = k) = (n choose k) * p^k * (1 - p)^(n - k)[/tex]

where:

P(X = k) is the probability of exactly k successes (using smartphones in meetings or classes)

n is the total number of trials (in this case, 15 adult smartphone users)

k is the number of successes (in this case, 12 adults using their smartphones in meetings or classes)

p is the probability of a success on a single trial (in this case, 0.44)

(1 - p) is the probability of a failure on a single trial (in this case, 0.56)

Using this formula, we can plug in the values and calculate:

[tex]P(X = 12) = (15 choose 12) * 0.44^12 * 0.56^(15-12)[/tex]

[tex]= 455 * 0.0001473577 * 0.215872256[/tex]

= 0.0040367

Therefore, the probability that exactly 12 of the 15 adult smartphone users use their smartphones in meetings or classes is approximately 0.0040 (rounded to four decimal places).

[tex]= 455 * 0.0001473577 * 0.215872256[/tex].

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Assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes. If 15 adult smartphone users are randomly selected, find the probability that exactly 12 of them use their smartphones in meetings or classes?(Round to four decimal places as needed.)

A function to represent the total charges for your hotel and car rental is Option C.

In mathematics, a function is a relation between two sets of values, where each input value from the first set (called the domain) corresponds to exactly one output value in the second set (called the range). The output value of a function is determined by its input value and any relevant rules or formulas.

Formally, a function can be defined as follows: Let X and Y be two non-empty sets. A function f from X to Y is a rule or formula that assigns to each element x in X a unique element y in Y, denoted by f(x), such that for any two elements x1 and x2 in X, if x1 = x2, then f(x1) = f(x2). The set X is called the domain of the function, and the set Y is called the codomain or range of the function.

Functions can be represented graphically, algebraically, or in tabular form. The graph of a function shows how the output value of the function varies with the input value, and can be used to visualize the behavior of the function. The algebraic representation of a function can be given by a formula or equation that expresses the output value in terms of the input value. A tabular representation of a function shows the input-output pairs in a table.

Functions are used in many areas of mathematics, science, engineering, and economics to model and describe relationships between variables. They are also used in practical applications, such as in computer programming, where they are used to define algorithms and data structures.

The total charges for the hotel and car rental can be found by adding the charges for the hotel and the car rental. Therefore, the function that represents the total charges can be found by adding the two given functions:

p(x) = 135x + (45 + 79x)

p(x) = 135x + 45 + 79x

p(x) = 214x + 45

Therefore, the function that represents the total charges for the hotel and car rental is p(x) = 214x + 45.

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The official currency of 20 of the EU's 27 member states is the euro (symbol: €; code: EUR) (EU).

4 5 euros in dollars is equivalent to about 53.10 US dollars (45 x 1.18).

The euro and the US dollar are among the world's most popular currencies. On the other hand, the EUR to USD conversion asks you to get familiar with specific pointers such as the exchange rate today. The US dollar is widely accepted as a kind of currency in many places. As a result, foreign currency values are calculated by comparing them to the US dollar. Take a look at this comprehensive guide to help you convert EUR to USD. As of my current knowledge cutoff date of September 2021, one euro was approximately equal to 1.18 US dollars. Based on that exchange rate.

However, please note that exchange rates can fluctuate and the actual value of 45 euros in US dollars may be different depending on the current exchange rate.

45 euros would be equivalent to about 53.10 US dollars (45 x 1.18).

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Answer:

1 milliliter = 0.00105669 liquid quart

Step-by-step explanation:

A unit can be used for measurement, and is commonly found in mathematics to describe length, size, etc.

Converting these units:

Therefore, for every 1 milliliter it is equivalent to 0.00105669 liquid quart.

The area of the trepezium will be 80 sq. unit.

What precisely is a trepezium?

Trapezoids are made up of two parallel and two oblique sides. A Trapezium is another name for it. A trapezoid is a closed four-sided shape or figure with a space-filling perimeter. It is a 2D figurine rather than a 3D figure. A trapezoid's bases are the sides that are parallel to one another. Legs are non-parallel sides, often known as lateral sides. The space between its parallel sides determines its height.

A trepezium's area is equal to 1/2*(a+b)*h.

where h is the height or distance between two parallel lines

The lines a and b are parallel.

Now,

Given A rectangle with a length of 17 and a height of 4 has two right triangles on each side of it with long leg lengths of 5

then parallel sides of trepezium will be 17 and 17+3+3=23

because for the triangle base will be =√5²-4²

=3

and height of trepezium=4 unit

So, area of trepezium will be=1/2(23+17)*4

=40*2

=80 sq. unit

hence,

           The area of the trepezium will be 80 sq. unit.

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Removing the electric car from the data set will reduce the standard deviation as the extreme value of 112 mpg is taken out, resulting in a decrease in the spread of the data. The interquartile range (IQR) will also be affected as the extreme outlier is taken out, will decrease the spread of the data in the boxplot.

The electric car with a rating equivalent to 112 miles per gallon is an extreme outlier, which means it is very far from the rest of the data. Therefore, removing this outlier from the data set will decrease the variability and, consequently, decrease the standard deviation. The extreme outlier with the rating equivalent to 112 miles per gallon is outside of the whiskers of the boxplot, which means it is beyond the range of the middle 50% of the data. Therefore, removing this outlier from the data set will decrease the spread of the data in the boxplot and, consequently, decrease the IQR.

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Answer:

Yes, by AA

Step-by-step explanation:

A triangle adds up to 180 degrees.

This means:

angle E = 180-53-60

angle E= 67 degrees

Angle E=Angle H

Angle C= Angle F

2 angles equaling to each other when comparing triangles means they are similar by AA.

Answer:

C. Yes by AA

Step-by-step explanation:

The triangles have the smae anlges, one is just smaller, but they are the same size.

 To find the x-intercept using the straight-line equation, substitute y=0 and solve for x. To find the y-intercept, substitute x=0 and solve for y.

The equation of a straight line is

y=mx+c

is the gradient and

c

is the height at which the line crosses the y-axis, also known as the y-intercept.

The gradient m is the slope of the line - the amount by which the ycoordinate increases in proportion to the x-coordinate. If you have two points (x1,y1) and (x2,y2) on the line, the gradient ism=y2−y1x2−x1

, we must first work out the gradient using the gradient formula above, and then choose either point to substitute into the straight line equation with this gradient.

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The complete expression that gives equivalent values is:

x⁻⁸ . x⁹ = x⁻⁶ . x⁷ = x⁻⁴ . x⁵ = x¹ = x⁻² . x³

From the question, we have the following parameters that can be used in our computation:

x⁻ . x = x⁻ . x = x⁻ . x = x = x⁻ . x

Where the exponents are blank

There is no general answer to this, and one of the possible solutions is as follows:

To start with, we create an expression of the following format:

x⁻ⁿ . xⁿ⁺¹ = x¹

Using the above as a guide, we have the following:

x⁻⁸ . x⁹ = x¹

x⁻⁶ . x⁷ = x¹

x⁻⁴ . x⁵ = x¹

x⁻² . x³ = x¹

So, the equivalent expression is x⁻⁸ . x⁹ = x⁻⁶ . x⁷ = x⁻⁴ . x⁵ = x¹ = x⁻² . x³

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Answer: x should be equal to -2

Step-by-step explanation:

8x + 6 = 14 - 4(2 - 2x)

8x + 6 = 14 - 8 - 4x

8x + 6 = 6 - 4x

8x = - 4x

x = -2

If she is working at a constant rate, 12 rows had been completed before Elena started working.

To determine the number of rows that were completed before Elena started working, we need to find the equation of the line that represents the relationship between the number of rows completed and the time taken.

We can use the two given points (14, 19) and (20, 22) to find the slope of the line:

slope = (change in rows) / (change in time) = (22 - 19) / (20 - 14) = 3 / 6 = 1/2

Next, we can use the slope and one of the points to find the y-intercept of the line using the point-slope form of a line:

y - 19 = (1/2)(x - 14)

y - 19 = (1/2)x - 7

y = (1/2)x + 12

Now that we have the equation of the line, we can use it to find the number of rows completed when x (time) is equal to 0, which represents the point when Elena started working:

y = (1/2)(0) + 12 = 12

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The given question is incomplete, the complete question is :

Elena agrees to finish a knitting project for a friend. The graph shows the number of rows Elena completes compared to the amount of time spent knitting.

Assuming she worked at a constant rate, how many rows had been completed before Elena started working?

AC=3x-4 AB=62 BC=x-2, x = 17. This can be solved by using the concept of simplification.

A line is an endlessly long object without breadth, depth, or curvature in geometry. So, despite the fact that they can exist in two, three, or more dimensional environments, lines are one-dimensional things. The term "line" can also refer to a line segment that has two locations that serve as its endpoints in daily life.

The most clear and simple way to calculate depreciation is along a straight line. It is most beneficial when an asset's value declines slowly over time at a pace that is close to constant.

Given that,

AC=3x-4

AB=62

BC=x-2

As we can clearly see in line AB:

AC+BC= AB

=>(3x-4)+(x-2)= 62

=>4x -6 = 62

=>4x = 62+6

=>4x = 68

=>x = 68/4

=>x= 17

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The complete question is as follows:

Answer:l^3x+28l=-6

or 0

Step-by-step explanation:

Answer:

Step-by-step explanation:

You want the measures of angles d° and e° in the given figure.

Usually, geometry problems tell you not to assume anything that isn't marked or stated regarding the figure. In order to answer this question, we need to assume ...

The base angles in an isosceles triangle are congruent. That means each of them is the complement of half the vertex angle.

  ∠D = 90° -1/2∠A = 90° -8°/2 = 86°

The segments CD and BE are parallel, so angle E is the supplement of angle D:

  ∠E = 180° -86° = 94°

The angle measures are d° = 86° and e° = 94°.

__

Additional comment

This is not a "word problem." All of the relations necessary for answering the question are shown in the diagram, not stated in words. (The question is necessarily written in words—for any problem.)

If b is a base angle and v is the vertex angle of an isosceles triangle, then the sum of angles is ...

  b + b + v = 180°

  2b = 180° -v . . . . . . subtract v

  b = 90° -v/2 . . . . . . divide by 2

Effectively, the altitude of an isosceles triangle bisects the vertex angle and creates two congruent right triangles. The acute angles in that triangle are the original base angle and half the vertex angle. They are complementary.

The correct options for the given polynomial are:

To analyze the end behavior of a polynomial we need to look at the degree and the sign of the leading coefficient.

Remember that the degree is the largest exponent of the polynomial.

Here we can see that the degree is 12, so it is even.

And the leading coefficient (the coefficient in the term with the largest exponent) is -10, so it is negative.

Then the first correct option is:

NEG/EVEN

That means that in both ends the polynomial tends to negative infinity, so:

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The number of hours that it will take 24 people in making the boxed lunches on the task would be = 5 hours

The relationship that exists between the number of boxes lunches and the number of people is an inverse relationship.

That is 200 inversely related 1/number of people

That is;

200 × number of people = k

Therefore, 15 people (N1)= 8 hours(T1)

24 people (N2)= X hours(T2)

using the constant of the inverse relationship above;

N1T1 = N2T2

15×8 = 24 × X

X = 15×8/24

X = 120/24

X = 5 hours.

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Answer: 56.2455

Step-by-step explanation:

Answer: The price is now 1.5 of what it was before is the correct answer.

Step-by-step explanation:For the given situation,

The statement is given as price increased by 1/2.

Let us assume, we have an item costs 1$.

Now the price is increased by 1/2, so we need to add the fraction to 1.

The price of each bagel sold when 312 bagels are sold and $280.80 earned  is $ 0.9.

One of the four basic mathematical operations, along with addition, subtraction, and multiplication, is division. Division is the process of dividing a larger group into smaller groups so that each group contains an equal number of things.

Repetitive subtraction is the process of division. It is the multiplication operation's opposite. It is described as the process of creating equitable groups.

The number of bagels sold = 312

The total money earned by selling 312 bagels = $ 280 . 80

The price for each bagel,

[tex]=\frac{total money earned}{number of bagels sold} \\\\=\frac{280.80}{312} \\\\=$0.9[/tex]

So, the price of each bagel sold is $ 0.9.

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The net force acting on each ball can be ranked from largest to smallest as Fd>Fb>Fc=Fa, with Fd being the largest  number of force due to its the highest mass and Fa being the smallest force due to its lowest mass.

The net force acting on each ball is equal to the product of its mass and acceleration due to gravity (F=ma). Since all of the balls have the same acceleration due to gravity, the magnitude of the net force on each ball can be determined by its mass. Therefore, the net force acting on each ball can be ranked from largest number to smallest as follows: Fd>Fb>Fc=Fa.

Fd>Fb>Fc=Fa

The net force acting on each ball can be ranked from largest to smallest as Fd>Fb>Fc=Fa, with Fd being the largest force due to its the highest mass and Fa being the smallest force due to its lowest mass.

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Answer: 2,380 people attend the game

Step-by-step explanation:

1. The first measurement is 15.708

2. The radius would be half of the distance across the drain, or half of the diameter. Half of 3.8cm, or 3.8cm / 2 is 1.9cm.

The diameter is . . .

d = 2r

d = 2 × 5inch

d = 10 inch

The radius is . . .

r = 5 inch

The circumference is the distance around the drain, or if you trace the entire circle. The formula to find the circumference of a circle is 2 multiplied by pi and the radius of the circle, or C = 2(pi)r. Here, we just found the radius, so the circumference is 2 * pi (which is approximately 3.14) * 1.9cm, or approximately 11.9cm!

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Step-by-step explanation:

all pairs of corresponding sides have the same scale factor.

so, we only need to find one to know it for all.

a)

we know 2 corresponding sides : 6 and 12.

that means

12 × s = 6

s = 6/12 = 1/2

b)

x = 5 × s = 5 × 1/2 = 2.5 = 2 1/2

y = 13 × s = 13 × 1/2 = 6.5 = 6 1/2

c)

to be right-angled triangles they need to fulfill the Pythagoras criteria :

c² = a² + b²

c is the Hypotenuse (the side opposite of the 90° angle).

a and b are the legs.

so, for the larger triangle we have

13² = 12² + 5²

169 = 144 + 25 = 169

correct. it is right-angled.

for the smaller triangle :

6.5² = 6² + 2.5²

42.25 = 36 + 6.25 = 42.25

as expected : also correct. so, yes, they are both right-angled.

The number of different simple random samples of size 4 that can be obtained from a population of size 45 is 1,011,690. This means there are over a million possible combinations of individuals that can be selected from the population.

The number of different simple random samples of size 4 that can be obtained from a population of size 45 is given by the combination formula:

C(45, 4) = 45! / (4! * (45 - 4)!) = (45 * 44 * 43 * 42) / (4 * 3 * 2 * 1) = 1,011,690

Therefore, there are 1,011,690 different simple random samples of size 4 that can be obtained from a population of size 45. This means that if we were to randomly select 4 individuals from the population, there would be over a million possible combinations of individuals that we could select.

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The length of 175 metres and width of 87.5 metres will maximise the area 15312.5 square metres.

We have been given that Farmer Ed has 350 metres of fencing and wants to enclose a rectangle mat plot that borders on a river. Farmer Ed does not fence the side along the river.  

First of all we will make a relevant figure to represent the perimeter of fencing for 3 sides as shown in the attachment.

Since Ed will not fence the side along the river, fencing is needed for 3 sides and the perimeter of the fencing would be x + x + y = 2x + y.

Now we will equate perimeter with 350 as: 2x + y = 350

y=350-2x

We know that the area of the rectangle is width times length.

A = X•Y

Upon substituting the value of y in area equation, we will get:

A = x•(350-2x)

A(x) = 350x -2x²

Now we will find derivative of area function as:

A'(x) = d(350- 2)/dx

A'(x) = 350-4x

Now we will equate derivative with 0 and solve for x as:

0 = 350-4

4x = 350

x = 350/4 - 87.5

Upon substituting x = 87.5 in equation y = 350-2x, we will get:

y = 350 - 2x

 = 350 - 2(87.5)

 = 350-175

y = 175

Therefore, the length of 175 metres and width of 87.5 metres will maximise the area.

on substituting x = 87.5 in area function, we will get:

A(87.5) = 350(87.5)-2(87.5)²

A(87.5) = 30625-2(7656.25)

A(87.5) = 30625-15312.5

A(87.5)= 15312.5

Therefore, the largest possible area enclosed would be 15312.5 square metres.

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—--------- CORRECT QUESTION FORMAT IS GIVEN BELOW —----------

(Q).

Farmer Ed has 350 meters of fencing and wants to enclose a rectangle mat plot that borders on a river. If farmer Ed does not fence the side along the river find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed ?

T statistic calculator displays the T-test value along with the mean and standard deviation for the two sets of data.

To find the t-value for a given set of data, enter the sample mean, population mean, standard deviation, and sample size into the t-statistic calculator. Given the other variables, this calculator can also determine the sample mean, population mean, standard deviation, and sample size.

The T-test, also known as the hypothesis testing tool or the hypothesis test static, is a statistical method for assessing whether the means of two sets of data differ in any way that affects their properties. It is a form of inferential static that aids in verifying whether assumption testing that is relevant to the population is being used.

The t-test comes in three varieties. As follows:

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Answer:

1/27

Step-by-step explanation:

Probability of DeeDee choosing Yogurt in diary = 1/3

Probability of DeeDee choosing pineapple as fruit = 1/3

Probability of DeeDee choosing cherries as toppings = 1/3

So the Probability of DeeDee's shake being made with yogurt pineapple and cherries = 1/3×1/3×1/3 = 1/27

The new average salary of the people on the bus is $84,44,96,111.11  and the median salary will not change and will remain same.

Given, we know that average salary of the 9 people on the bus is $65,000.

Formula for Average = sum of salary of all people/ the number of people.

Let us say average salary of first 8 people is 'S'. Given, salary of the 9th guy on the bus is $120,000 Now, we can write it like this :

⇒$65,000  = (S + $120,000)/9

⇒585,000 = S + $120,000

⇒S = $465,000

Therefore, average salary of 8 people is $465,000 after the 9th guy gets off. Now Bill Gates enters the bus with a salary of $7,600,000,000. New average salary :

⇒ (S + $7,600,000,000) / 9

⇒$84,44,96,111.11

Median will not change since, The median of a set of numbers is the number in the middle when you list them in order. For example, the median of {1, 3, 6, 9, 13} is 6. If you replace the highest number with a different number, the median will not change. In this example, {1, 3, 6, 9, 100} still has a median of 6.

Therefore, the new average yearly income of the people on the bus along with Bill Gates is $84,44,96,111.1111.

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The polynomial f(x) of degree 4 that has the following zeros 3 (multiplicity 2), -2, 0 is f(x) = (x-3)^2 * (x+2) * (x-0).

To find the polynomial f(x), we can use the fact that the zeros of a polynomial are the values of x that make the polynomial equal to zero. In other words, if a polynomial f(x) has zeros at x=a, x=b, and x=c, then f(x) = (x-a) * (x-b) * (x-c).

In this case, we have zeros at x=3 (with multiplicity 2), x=-2, and x=0. This means that our polynomial will have factors of (x-3)^2, (x+2), and (x-0).

Multiplying these factors together gives us the polynomial f(x) = (x-3)^2 * (x+2) * (x-0), which simplifies to f(x) = (x^2 - 6x + 9) * (x+2) * x. Expanding this expression gives us the polynomial f(x) = x^4 - 4x^3 - 3x^2 + 12x.

Therefore, the polynomial f(x) of degree 4 that has the following zeros 3 (multiplicity 2), -2, 0 is f(x) = x^4 - 4x^3 - 3x^2 + 12x.

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The square of the expression 1/2 is given as the numeric value in the terms of the 0.7071.

The value that a number yields when multiplied by itself is known as the square root of the number. The square root is denoted by the radical sign. For example, 16 minus 4 is 16. The root symbol or radicals is another name for the radical symbol. If an integer is a perfect square, we can quickly determine its square root.

square root of the 1/2 = √1/2

We can use this rule for radicals to write the expression.

√a/b = √a/√b

So, by multiplying by the right form of 1, we may rationalise the denominator or, in other words, remove the radical from the denominator:

√1/2 x √2/√2

√2/2

1.4142/2

0.7071

So the square of the 1/2 is 0.7071.

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