7. Is this a leap year?
FEBRUARY

Simplify all:

To construct a frequency distribution and frequency histogram of the data using five classes, we first need to determine the range of the data and the class interval.

The range is the difference between the highest and lowest values in the data set, in this case, 98 - 1 = 97.

We can divide the range by the number of classes to determine the class interval. In this case, 97/5 = 19.4.

We will round up to 20 to have easily divisible numbers.

The class intervals with the frequency would be:

1-20: 3

21-40: 2

41-60: 0

61-80: 3

81-100: 2

Next, we need to create a frequency histogram by plotting the class intervals on the x-axis and the frequencies on the y-axis, and then drawing a bar for each class interval representing the frequency.

The histogram will be skewed right. A histogram is skewed right when the tail of the histogram extends farther to the right than the left. In this case, the majority of the data falls in the lower class intervals, but there are a few outliers on the higher end, which extends the histogram to the right.

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To solve the system of equations using elimination, we can follow these steps:

Multiply the first equation by 4, and the second equation by 2:

20x + 8y = 12

8x - 16y = 24

Add the two equations together:

20x + 8y = 12

8x - 16y = 24

28x - 8y = 36

Solve for x by dividing both sides of the equation by 28:

x = 36/28 = 9/7

Substitute the value of x back into one of the original equations:

5x + 2y = 3

5(9/7) + 2y = 3

45/7 + 2y = 3

2y = -42/7

Solve for y by dividing both sides by 2:

y = -21/7

So the solution of the system of equations is (x,y) = (9/7, -21/7)

It is also worth noting that we could have also multiplied the first equation by -2 and the second equation by 5 and added them together, this will also lead us to the same solution.

The f(t) formula is f(t) = 34 + 3t. The expression f(6) = 52; this means that in 2026, the population was 52000 people, and Setting 34 + 3t = 64 leads to t = 10, which means in 2030, the population was 64000 people.

(a) Each year, the population increases by 3000 people; this means that the population is a linear function of time, and its slope is 3 thousand people per year. The population in 2020 was 34000, and so (0, 34) is the vertical intercept, and we have

f (t) = 34 + 3t.

(b) f(6) = 34 + 3×6

f(6) = 34 + 18

f(6) = 52

This means in 2026, the population was 52000 people.

(c) f(t) = 64

34 + 3t = 64

3t = 64 - 34

3t = 30

t = 10

This means in 2030, the population was 64000 people.

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The number of the people with headaches to the nearest whole number is 3100

Percentage can be defined as the number or ratio expressed as fraction of 100.

It is represented using the mathematically sign"%".

Due to this, percentage is a dimensionless number.

it is known to have no unit of measurement.

They are also seen as fractions with 100 as their denominators. It is the relative value of a quantity with 100.

From the information given, we have that;

Then,

6.6/100 × 46785

Multiply the values, we get

3087. 81 people

Hence, the value is 3100 people in the nearest whole number.

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add and then subtract them m

The standard form of a related quadratic function is,

⇒ (x² - 5x - 36)

An algebraic equation with the second degree of the variable is called an Quadratic equation.

We have to given that;

The solutions of a quadratic equation are -4 and 9.

Let the factors of the quadratic equation are,

⇒ (x - (-4)) (x - 9)

⇒ (x + 4) (x - 9)

⇒ (x² - 9x + 4x - 36)

⇒ (x² - 5x - 36)

Thus, The quadratic function is,

⇒ (x² - 5x - 36)

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By using the method of successive differences, the next number in the given sequence 3, 9, 20, 36, 57, 83, 114 is 150.

In Mathematics, a difference table can be defined as a type of table that is constructed by subtracting adjacent elements (entries) in a sequence, and then repeating the process with next those elements (entries).

Number            Difference from previous             Difference of differences

3

9                                         6                                          

20                                       11                                               5            

36                                       16                                              5          

57                                       21                                              5          

83                                       26                                             5          

114                                       31                                              5  

150                                      36                                             5        

First column: 9 - 3 = 6; 20 - 9 = 11; ....... 150 - 114 = 36.

Second column: 11 - 6 = 5; 16 - 11 = 5; ...... 36 - 31 = 5.

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(a) A 180° rotation about the origin would involve rotating the shape by 180° clockwise around the point (0,0).

(b) A reflection across the x-axis would involve reflecting the shape over the x-axis.

What is coordinate plane?

Each point is identified by an ordered pair of numbers: an x-coordinate on the x-axis and a y-coordinate on the y-axis. The starting point is at (0,0).

(a) A 180° rotation about the origin would involve rotating the shape by 180° clockwise around the point (0,0). This would result in the image of APQR being upside down, with A' being located at the point (0,-2), P' being located at the point (-1,-1), Q' being located at the point (1,-1), and R' being located at the point (0,-2)

(b) A reflection across the x-axis would involve reflecting the shape over the x-axis. This would result in the image of APQR being a mirror image of the original shape, with A" being located at the point (0,2), P" being located at the point (-1,1), Q" being located at the point (1,1), and R" being located at the point (0,2)

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The value of g(2) = -1/4 and the value of g(-2) is π/2 - 3/2

Consider function g(x)

[tex]g(x) = \int\limits^x_1 {f(t)} dt[/tex]

Here, function f be the continuous function defined on interval [-4, 3]

The graph of function f is shown below.

It consists of three line segments and a semicircle centered at the origin, is given above.

For x = 2,

g(2)

[tex]=\int\limits^2_1 {f(t)} dt[/tex]

= -(1/2) × 1 × (1/2)                .........(From the graph of function f)

= -1/4

For x = -2,

g(-2)

[tex]=\int\limits^{-2}_1 {f(t)} dt\\\\=-\int\limits^{1}_{-2} {f(t)} dt[/tex]

= -(3/2 - π/2)                .........(From the graph of function f)

= π/2 - 3/2

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The complete question is:

Let f be the continuous function defined on [-4, 3] whose graph, consisting of three line segments and a semicircle centered at the origin, is given above. Let g be the function given by [tex]g(x) = \int\limits^x_1 {f(t)} dt[/tex]

Frin dthe values of g(2) and g(-2)

For {x} = 5, we can write the coordinates as  -

(3, 0)

(5, 0)

(5, 1/25)

(3, 625)

In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space.

Given are the coordinates as -

(3, 0), (x, 0), (x, 1/x²) and (3, 1/xˣ)

Let {x} = 5. We can write the coordinates as -

(3, 0)

(5, 0)

(5, 1/25)

(3, 625)

Therefore, for {x} = 5, we can write the coordinates as  -

(3, 0)

(5, 0)

(5, 1/25)

(3, 625)

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It represents the output values, hence the claim that "The notation "f(x)" (f of x) is another means of encoding y-values in a function" is accurate.

An expression that can be used to define and depict the relationship between two or more variables in a data collection is referred to as a function in mathematics.

In conclusion, this means that a function typically illustrates the link between a data set's input values (x-values or domain) and output values (y-values or range), as well as demonstrating how the components in a table are uniquely paired (mapped).

Generally speaking, the output values (y-values or range) of a data set (function) are displayed on the y-coordinate of a graph, and they are typically denoted by either the notation f(x) or y.

The complete question is:

The notation "f(x)" (f of x) is another way of representing y-values in a function. True or False?

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a) The probability of this event is 0.08., b) The probability is 0.3 + 0.6 - 0.06 = 0.84, c) P(Sports | Man) = 0.12 / 0.6 = 0.2

d) For the people surveyed, the events of being a person whose response is Sports and being a man are not independent.

e) The probability that at least 4 of the people selected will respond watching TV as their favorite activity is 1 - 0.2097 = 0.7903

a) We need to multiply the proportion frequency of women responding with Sports (0.2) by the relative frequency of women to get the likelihood that the individual chosen will be a woman (0.4).

Thus, we obtain: 0.2 * 0.4 = 0.08 Therefore, the likelihood of this occurring is 0.08.

b) We can add the relative frequency of TV for men (0.3) and the relative frequency of men (0.6) and subtract the overlap (the relative frequency of TV for men and men), which is equal to 0.2 * 0.3 = 0.06 to determine the likelihood that the individual chosen would either respond with TV or be a man.

The probability is therefore 0.3 + 0.6 - 0.06 = 0.84

c) Using the algorithm, we can determine the likelihood that the individual chosen will be a guy and that their response to the question will be "Sports." P(Sports and Man) = 0.2 * 0.6 = 0.12 P(A and B) = P(A and B) / P(B) P(Sports and Man) = P(Sports and Man) / P(Man)

P(Sports|Man) = 0.12/0.6=0.2

d) For the respondents, being a man and having selected "Sports" as a response are not separate events. P(Sports and Man) = 0.12 and P(Sports) * P(Man) = 0.2 * 0.6 = 0.12, which are not equivalent, demonstrate this.

e) Using binomial distribution, the probability that at least 4 of the people selected will respond watching TV as their favorite activity is 1 -

P(X < 4) - P(X = 4)

P(X < 4) = (6 C 0) * (0.32)^4 * (0.68)^2

P(X = 4) = (6 C 4) * (0.32)^4 * (0.68)^2

P(X < 4) + P(X = 4) = 0.2097

Therefore the probability that at least 4 of the people selected will respond watching TV as their favorite activity is 1 - 0.2097 = 0.7903

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Answer:

110

Step-by-step explanation:

180-70 =110

The amount of codeine that Ken is being prescribed every day, given the Tyelenol 3 being prescribed is 165. 47 milligrams of Codeine

The amount of codeine in 30 ml of Tylenol 3 is:

= ( 17 x 73 ) / 30

= 41. 37 mL of Codeine

The number of 6 hour periods in a day is:

= 24 / 6

= 4

The amount of codeine that Ken is being prescribed a day is therefore:

= 4 x 41. 37

= 165. 47 milligrams of Codeine

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The solution to the system of equations 3x - y = 17 and 5x + 3y = 5 is (4, -5)

An equation is an expression showing the relationship between numbers and variables.

Given the equations:

3x - y = 17 ;    multiplying by 3:

9x - 3y = 51     (1)

5x + 3y = 5     (2)

To solve by elimination method, subtract add 2 to equation 1, hence:

14x = 56

Dividing by 14:

x = 4

Put x = 4 in equation 2:

5(4) + 3y = 5

20 + 3y = 5

3y = -15

y = -5

The solution is (4, -5)

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These mathematical operations can be solved in the given manners.

The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.

Given some fractions to solve for understanding, I will solve two questions with the same denominator and two with different denominators one with a whole number and one fraction.

Since the base is the same

=> 6/4

=> 1.5

We can write 2 /5 as 4/10 since their values are the same

=> 6/10 ÷4/10

=> 6/4

=> 1.5

we can write 1/4 as 6/24 and 1/6 as 4/24 to make the denominator same.

=> 6/24/4/24

=> 4/4

=> 1.5

We can write 2/9 as 4/18 and 5/6 as 15 / 18 to make the denominator the same

=> 4/18/15/18

=> 4/15

=> 0.266

Therefore, The given Mathematical operations are being solved In the s

same manner

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Answer:

Step-by-step explanation:

The investment below is compounded semi-annually, while an investment of the same principal at the same rate compounded annually would have interest compounded once per year.

The formula for compound interest is A = P(1 + r/n)^nt where A is the final amount, P is the principal, r is the annual interest rate, n is the number of times the interest is compounded per year and t is the number of years.

In the case of the semi-annual investment:

A = 9000(1 + 0.04/2)^(2*15) = $21,831.62

In the case of the annual investment:

A = 9000(1 + 0.04)^15 = $21,812.30

As we can see, the semi-annual investment yields a slightly larger return than the annual investment, $19.32 more. Compounding interest more frequently results in a larger return due to the interest earning interest.

If the mean time between unscheduled maintenance of LCD displays in a hospital's CT scan facility is 4,000. The probability of unscheduled maintenance in exactly 5,000 hours is:.7135.

Using this formula to the probability of unscheduled maintenance in exactly 5,000 hours

P ( X < 5000) = 1 - e^(-λx)

Where:

e = exponent

-λ = Operating hour

x = Number of hours

Let plug in the formula

P ( X < 5000) = 1 - e^(-(1/4000) × 5000)

P ( X < 5000) = 1- e^-1.25

P ( X < 5000)  = 1 - .2865

P ( X < 5000)  = .7135

Therefore the probability is .7135.

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The gross pay mike for last week is $210.

The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.

Given, Mike earns 5.00 per hour overtime is paid at the time and half of his regular rate worked 42 hours last week.

Since it is not mentioned that mike worked overtime or not so we will consider this a normal work hour for a week is 42 hours.

Thus total he earns = 42*5

total he earns = 210$

If he works overtime,

for every hour he worked overtime he would get = 1.5* 5

for every hour he worked overtime he would get = 7.5

Therefore, For the week mike's gross pay is $210.

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For these traditional cooking measurements, there are no specific definitions. The majority of sources, however, claim that a dash is roughly 1/8 of a teaspoon, a pinch is 1/16 of a teaspoon, and a smidgen is 1/32 of a teaspoon.

The Complete Question.

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If Kaido's age is x, Hiroshi's age is y and Saitama's age is z, then ratio value for their ages is x : y : z.

What is ratio?

Comparing two amounts of the same units and determining the ratio tells us how much of one quantity is in the other. Two categories can be used to categorise ratios. Part to whole ratio is one, and part to part ratio is the other. The part-to-part ratio shows the relationship between two separate entities or groupings.

Let the age of Kaido be represented as x.

Let the age of Hiroshi be represented as y.

Let the age of Saitama be represented as z.

The ratio of Kaido's age to Hiroshi's age can be given as -

Kaido's age : Hiroshi's age

Substituting the values in the expression -

x : y

The ratio of Kaido's age to Saitama's age can be given as -

Kaido's age : Saitama's age

Substituting the values in the expression -

x : z

The ratio of Hiroshi's age to Saitama's age can be given as -

Hiroshi's age : Saitama's age

Substituting the values in the expression -

y : z

The ratio of Kaido's age to Hiroshi's age to Saitama's age can be given as -

Kaido's age : Hiroshi's age : Saitama's age

Substituting the values in the expression -

x : y : z

Therefore, the ratio expression is obtained as x : y : z.

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So, only option C is a counterexample of the conditional statement "If a number is divisible by 4, then it is divisible by 8."

A counterexample of a conditional statement is a specific case or example that contradicts the statement or goes against its logical implications.

In this case, the conditional statement is "If a number is divisible by 4, then it is divisible by 8."

Option C, 36, is a counterexample of this conditional statement.

This is because 36 is divisible by 4 (9 x 4 = 36), but it is not divisible by 8 (36 / 8 = 4.5). This contradicts the statement that if a number is divisible by 4, it must also be divisible by 8.

Option A, 12, is not a counterexample of the conditional statement because 12 is divisible by 4 (12 / 4 = 3) and also divisible by 8 (12 / 8 = 1.5).

Option B, 32, is not a counterexample of the conditional statement because 32 is divisible by 4 (32 / 4 = 8) and also divisible by 8 (32 / 8 = 4).

Option D, 20, is not a counterexample of the conditional statement because 20 is not divisible by 4 (20 / 4 = 5)

So, in summary, only option C is a counterexample of the conditional statement "If a number is divisible by 4, then it is divisible by 8."

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Through the given data points the domain of the function is 1 ≤ n ≤ 5.

What is a function?

In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.

The domain of a function is the complete set of all possible values of independent variable.

The points associated with the graph is (1,15) and (5,11).

The formula for equation is (y - y1) =  (y2-y1)/(x2-x1) (x - x1).

(y2-y1)/(x2-x1) = (11 - 15)/(5 - 1)

m = -4/4

m = -1

Now, the equation can be written as -

y - y1 = m(x - x1)

y - 15 = -1(x - 1)

y - 15 = -x + 1

y = -x + 16

From the graph k = -n + 16

The independent variable 'n', taking the values between 1 and 5, in that interval graph is continuous.

Therefore, the domain is 1 ≤ n ≤ 5.

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The equivalent expression to the 4^-3 / 4^-1 is 4^-2 or it is also equals to 1/16 .

What is Algebraic expression ?

Algebraic expressions are the concept of expressing numbers the usage of letters or alphabets without specifying their real values. The fundamentals of algebra taught us a way to express an unknown price using letters which includes x, y, z, and so on. these letters are referred to as here as variables. An algebraic expression can be a combination of both variables and constants. Any value this is located earlier than and accelerated with the aid of a variable is a coefficient.

Given

expression ,

4^-3 / 4^-1

= 4 ^ (-3-(-1))

= 4^ (-3+1)

= 4^(-2)

= 1/4^2

= 1/16 .

Therefore , The equivalent expression to the 4^-3 / 4^-1 is 4^-2 or it is also equals to 1/16 .

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The volume of the metal sphere is 4π/3(R^3 - r^3)

The volume of the solid generated is 2π cubic units.

The volume of the ring can be found by subtracting the volumes of two spheres with radii R and r:

V = (4/3) * π * (R^3 - r^3)

So, the volume of the ring is given by:

V = (4/3) * π * (R^3 - r^3) cubic units.

Evaluate

V = 4π/3(R^3 - r^3)

We have the equation to be

y = 1/x

The volume of the solid is given by the definite integral:

V = 2π ∫[a,b] x * y dx

where a and b are the lower and upper limits of the interval over which we are integrating.

In this case, a = 1 and b = 2, so the volume of the solid is given by:

V = 2π ∫[1,2] x * 1/x dx = 2π ∫[1,2] dx = 2π (x)|[1,2] = 2π (2 - 1) = 2π.

So, the volume is to 2π cubic units.

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