Every molecule has a unique molecular formula.
A molecular formula is a chemical formula that represents a molecule and gives information about the number and type of atoms present in the molecule. This formula is unique to each molecule and distinguishes one molecule from another, even if they have the same number and type of atoms arranged in a different way.
For example, the molecular formula for glucose (C6H12O6) is different from that of fructose (C6H12O6), even though they have the same number and type of atoms. The molecular formula represents the actual number of atoms present in the molecule and their chemical makeup, which in turn determines the chemical properties and behavior of the molecule.
Thus, for a given number of domains, the characteristic that is common to every molecule is their unique molecular formula.
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Check whether
(
−
3
,
−
2
)
is a solution to the system, then choose all true statements from the list.
Equation 1:
−
7
x
−
4
y
=
29
Equation 2:
3
x
=
−
7
+
y
Group of answer choices
The point satisfies both equation 1 and 2
The point satisfies only equation 2
The point is not a solution to the system
The point satisfies only equation 1
The point does not satisfy either equation
The point is a solution to the system
The point satisfies both equation 1 and 2" and "The point is a solution to the system.
What do you mean by equation?An equation is a mathematical statement that shows the equality of two expressions. Equations can be used to represent relationships between variables and to solve problems. They are written using an equal sign (=) and can include numbers, variables, and mathematical operations such as addition, subtraction, multiplication, and division.
For example, the equation 2x + 3 = 7 is an equation that states that the expression on the left side (2x + 3) is equal to the expression on the right side (7). The goal is to find the value of the variable x that satisfies the equation. In this case, x = 2 is a solution to the equation.
To check whether a point is a solution to a system of equations, we can substitute the values of the variables into the equations and see if the resulting expressions are equal.
So, for the point (-3, -2), we can substitute these values into the equations:
Equation 1: -7x - 4y = 29
Substituting x = -3 , y = -2:
-7(-3) - 4(-2) = 29
21 + 8 = 29
29 = 29
Equation 2: 3x = -7 + y
Substituting x = -3 , y = -2:
3(-3) = -7 + (-2)
-9 = -9
Since both equations are true, the point (-3, -2) satisfies both equation 1 and 2, and is a solution to the system.
Therefore, the true statement from the list is "The point satisfies both equation 1 and 2" and "The point is a solution to the system".
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The distribution of age for players of a certain professional sport is strongly skewed to the right with mean 26.8 years and standard deviation 4.2 years. consider a random sample of 4 players and a different random sample of 50 players from the population. What would be true about the sampling distributions of the sample mean ages for samples of size 4 and samples of size 50?
Answer:
For a random sample of 4 players, the sampling distribution of the sample mean age would have:
the mean wouldn't be close to 26.8 years, as a sample mean will be an unbiased estimator of the population mean but the sample here is far smaller than a sample of 50.
A larger standard deviation compared to the standard deviation of individual player ages (4.2 years), as the standard deviation of the sample mean decreases with larger sample sizes (i.e., the Central Limit Theorem). The standard deviation of the sample mean for a sample of 4 players can be calculated using the formula:
s_mean = s / sqrt(n)
where s is the population standard deviation (4.2 years) and n is the sample size (4).
For a random sample of 50 players, the sampling distribution of the sample mean age would have:
A mean close to 26.8 years, as the sample mean will be an unbiased sample mean for a sample of 4 players, as the standard deviation of the estimator of the population mean.
A smaller standard deviation compared to the standard deviation of the sample mean decreases with larger sample sizes (i.e., the Central Limit Theorem). The standard deviation of the sample mean for a sample of 50 players can be calculated using the formula:
s_mean = s / sqrt(n)
where s is the population standard deviation (4.2 years) and n is the sample size (50).
Josiah has a points card for a movie theater.
He receives 70 rewards points just for signing up.
He earns 11. 5 points for each visit to the movie theater.
He needs 139 points for a free movie ticket.
Write and solve an equation which can be used to determine vv, the number of visits Josiah must make to earn a free movie ticket
Answer:
6
Step-by-step explanation:
70 sign up
11.5 each visit assuming w visits
so to get to 139
11.5w +70=139
11.5w =69
w= 6
Match the correlation coefficient with the correct association:
Question 8 options:
0.52
-0.86
0.93
-0.66
-0.01
1.
Strong association
2.
Weak association
3.
Moderate association
Note that the correlation coefficients matched with the correct association are given as follows:
0.52: Moderate association
-0.86: Strong association
0.93: Strong association
-0.66: Moderate association
-0.01: Weak association
A correlation coefficient is a quantitative measure of a statistical connection between two variables.
The variables might be two columns from a specified data set of observations, commonly referred to as a sample, or two factors of a multivariate random variable with a known distribution.
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(ii) The quadratic equation whose solution set is {0, 2}, is:
The quadratic equation whose solution set is {0, 2}, is: x²-2x = 0
What are quadratic equations?A Quadratic equation is any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power.
Given that, the solution of a quadratic equation is {0, 2},
The equation of a quadratic polynomial in form sum and product of solutions is given by,
x²-(α+β)x+αβ = 0, where α, β = solution of equation
α+β = 0+2
α+β = 2
αβ = 0×2
αβ = 0
Therefore, equation is x²-2x+0 = 0
Hence, the quadratic equation whose solution set is {0, 2}, is: x²-2x = 0
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Question 9
Solve 9x + 11 < 10x + 16
Answer:
[tex]x > -5[/tex]
Step-by-step explanation:
Flip the equation over- [tex]10x+16 > 9x+11[/tex]
Now do [tex]10x-9x=x[/tex]
So the equation now looks like this [tex]x+16 > 11[/tex]
Now subtract 16 from both sides to give you the answer [tex]x > -5[/tex]
Answer: [tex]x > \Large\boxed{-5}[/tex]
Step-by-step explanation:
Given inequality
[tex]9x+11 < 10x+16[/tex]
Subtract 9x on both sides
[tex]9x+11-9x < 10x+16-9x[/tex]
[tex]11 < x+16[/tex]
Subtract 16 on both sides
[tex]11 -16 < x+16-16[/tex]
[tex]-5 < x[/tex]
[tex]x > \Large\boxed{-5}[/tex]
A rectangular prism has a height of 10 inches in a width of 19 inches and a length of 20 inches in what is the volume of the prism
The volume of a rectangular prism is a measure of the space occupied by the prism. It is calculated by multiplying the area of the base of the prism by its height.
In a rectangular prism, the base is a rectangle, and the height is the perpendicular distance between the top and bottom faces of the prism.
To find the volume of the rectangular prism, we simply multiply the length, width, and height of the prism. The length and width give us the area of the base, and the height gives us the perpendicular distance between the top and bottom faces. So, the formula for the volume of a rectangular prism is:
V = length * width * height
In this case, the height of the rectangular prism is 10 inches, the width is 19 inches, and the length is 20 inches. So, we can plug these values into the formula and calculate the volume:
V = 20 * 19 * 10
V = 3800 cubic inches
So, the volume of the rectangular prism is 3800 cubic inches.
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A rectangular prism has a height of 10 inches in a width of 19 inches and a length of 20 inches in what is the volume of the prism?
We need only multiply the rectangular prism's length, breadth, and height to determine its volume. The area of the base is determined by the length, breadth, and height, while the angle between the top and bottom faces is determined by the height. So, the following is the formula for a rectangle prism's volume:
V: length, breadth, and height
In this instance, the rectangular prism measures 10 inches in height, 19 inches in breadth, and 20 inches in length. As a result, we can determine the volume by entering these values into the formula:
V = 20 * 19 * 10
let f be a polynomial function with values f'(x) at selected values of x given in the table above. which of the following would be true for -2 < x <6?
[tex]f'(-2) = 4[/tex]This means that the rate of change of the function is 4 for all values of x within the given interval.
The derivative of a polynomial function tells us the rate of change of the polynomial function at any given point. Therefore, if we look at the table above, we can see that for x = -2, the derivative of the function (f') is equal to 4. So the statement that [tex]"f'(-2) = 4"[/tex] is true for -2 < x < 6.
The derivative of a polynomial function is a measure of the rate of change of the function at any given point. In the table provided, we can see that for x = -2, the derivative of the function (f') is equal to 4. As such, this statement is true for the interval -2 < x < 6 since f'(-2) = 4. This means that the rate of change of the function is 4 for all values of x within the given interval.
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Which ofthe following is the LU-factorization of the matrix a) b) 1. c) -1 [1 01 0] d) -3
For the matrix [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex] , the LU-factorization is option D: [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex] [tex]\left[\begin{array}{ccc}1&0\\0&1\end{array}\right][/tex].
What is a matrix?
A matrix is a rectangular array or table with numbers or other objects arranged in rows and columns. Matrices is the plural version of matrix. The number of columns and rows is unlimited. Matrix operations include addition, scalar multiplication, multiplication, transposition, and many others.
Lower-upper (LU) decomposition, also known as factorization of a matrix, is the process of breaking a matrix into its lower and upper triangular components.
The given matrix is - [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex].
Generate a matrix A = LU such that L is the lower triangular matrix with principal diagonal elements being equal to 1 and U is the upper triangular matrix.
Take a matrix I = [tex]\left[\begin{array}{ccc}1&0\\0&1\end{array}\right][/tex]
Apply the elementary row operation such that - R2 → 3R1 + R2
So, it is obtained that I = [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex]
Here, lower matrix is [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex].
Here. upper matrix is [tex]\left[\begin{array}{ccc}1&0\\0&1\end{array}\right][/tex].
Therefore, the matrix is [tex]\left[\begin{array}{ccc}1&0\\-3&1\end{array}\right][/tex] [tex]\left[\begin{array}{ccc}1&0\\0&1\end{array}\right][/tex].
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3/4(12a+8) =27.6 3/4 x () + (12a x 8) = () A =?
please help yall this is my last question i need to do
The solution for a for the expression in this problem is given as follows:
a = 2.4.
How to solve the expression?The expression for this problem is defined as follows:
3/4(12a + 8) = 27.6.
We want the solution for the variable a, hence the variable a must be isolated.
Applying cross multiplication, we have that:
3(12a + 8) = 27.6 x 4.
Now with the distributive property, we have that:
36a + 24 = 110.4
36a = 110.4 - 24
a = (110.4 - 24)/36
a = 2.4.
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The table below shows that the number of miles driven by Parker is directly
proportional to the number of gallons he used.
Gallons Used Miles Driven
34
41
45
1305.6
1574.4
1728
How many miles can he travel on 44.2 gallons of gas?
Considering that Parker uses 1 gallon of gas for every 0.026 miles he drives, he can travel 1.149 miles on 44.2 gallons of fuel.
what is unitary method ?The unitary is a method of troubles that entails calculating the value of a single unit, multiplying that value, and then calculating the required value. To sum it up, the unit method is employed to obtain a single unit quantity from a specified multiple. One writer costs 400 rupees, and 40 pens would cost 400 rupees. Perhaps there is a regular procedure for carrying it out. merely one nation. anything featuring a distinctive component. Algebra of matrices or operators, linear programming, applied mathematics, and its homologue and reciprocal are all equivalent.
given
For 34 miles and 1305, Parker's mileage is directly proportionate to the amount of gallons used.
1 gallon equals 0.026 miles, so 6 gallons are required.
Consequently, 1.149 miles equal 44.2 gallons of gas.
Considering that Parker uses 1 gallon of gas for every 0.026 miles he drives, he can travel 1.149 miles on 44.2 gallons of fuel.
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What is the distance between (2, 5) and (-3, 5)?
Answer:
5 units
Step-by-step explanation:
since the y- coordinates are equal, both 5, then this is a horizontal line.
the distance between the points is then the absolute difference of the x- coordinates, that is
distance = | - 3 - 2 | = | - 5 | = | 5 | = 5 units
or
distance = | 2 - (- 3) | = | 2 + 3 | = | 5 | = 5 units
Produce per pound costs meat per pound because the of the graph for meat is that of the graph for produce.
The of the graph tells you the unit rate in
The complete sentence:
Produce per pound costs less than meat per pound because the slope of the graph for meat is greater to that of the graph for produce.
The slope of the graph tells you the unit rate in dollars per pound.
What is linear function?The graph of a linear function is a straight line. The following is the form of a linear function.
a + bx = y = f(x).
One independent variable and one dependent variable make up a linear function. x and y are the independent and dependent variables, respectively.
Given:
The graph's x-axis displays weight in pounds and the y-axis the cost in dollars.
The slope of a line is constant and indicates the unit rate of change.
The graph's slope, then, shows the unit rate in dollars per pound.
Also, the slope is higher on the steeper line (closer to the y-axis).
Considering the graph,
The graph of the line shows that the price of meat per pound is higher than the price of vegetables per pound.
Therefore, the line for meat is larger than the graph for produce, the price of meat per pound is higher than the price of produce per pound.
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The complete question is given in the attached image.
Use the Rational Zero Theorem to find all potential rational zeros of the polynomial y=2x2+5x−24. Which of these is NOT a potential zero?
As x = -7 & x = 2 are zeroes of y=2x²+5x−24, option b. (5) and option d. (7) are NOT a potential zero.
How do you find rational zeros using the Rational Zero Theorem?Finding a polynomial's zeros requires the use of the rational zero theorem and synthetic division.
To generate a list of all the function's potential rational zeros, use the Rational Zero Theorem.
Analyze potential zeros via synthetic division.
The result is a zero if the remainder is 0.Any rational zero must take the form p/ q, where p is a factor of the constant term and q is a factor of the leading coefficient, if the coefficients of a polynomial function are integers and stated in descending order of the exponents.
P(x)= x² + 5x -14
p(x) = (x+7)(x-2)
y = (x+7)(x-2)
0 = (x+7)(x-2)
x+7 = 0 , x-2=0
x = -7 , x = 2
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Use the Rational Zero Theorem to find all potential rational zeros of the polynomial y=2x2+5x−24. Which of these is NOT a potential zero?
a. x = -7
b. x = 5
c. x = 2
d. x = 7
By Using the Rational Zero Theorem, All of these are not the potential zeros of the polynomial y = 2x² + 5x - 24
What is Rational Zero Theorem?The Rational Zero Theorem states that if a polynomial has rational zeros, then the zeros must be the form p/q, where p is a factor of the constant term and q is a factor of the leading coefficient. In this case, the potential rational zeros are:
For example:- constant term = 24 and Leading coefficient = 2.
So, p/q = ±1, ±2, ±3, ±4, ±6, ±12, ±24
To determine which of these is not a zero, we can substitute each into the polynomial and check if the result is zero. For example, when we substitute x = 1 into the polynomial, we get:
y = 2x² + 5x - 24
At x = 1
y = 2(1)² + 5(1) - 24
y = 2 + 5 - 24
y = 19 ≠ 0
At, x = 1 it is not possible.
Check, on x = 2
y = 2(2)² + 5(2) - 24
y = 8 + 10 - 24
y = -6 ≠ 0
y = 2 is also not possible.
Check, on x = -2
y = 2(-2)² + 5(-2) - 24
y = 8 - 10 - 24
y = -26 ≠ 0
y = -2, is also not possible.
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Use the Rational Zero Theorem to find all potential rational zeros of the polynomial y=2x2+5x−24. Which of these is NOT a potential zero?
a. x = 1
b. x = 2
c. x = -2
d. all of these
Find (f/g) (x). include any restrictions on the domain.
(image attached
[tex]\huge\begin{array}{ccc}A.&\left(\frac{f}{g}\right)(x)=\frac{\sqrt[3]{2x}}{2x+1},&x\neq-\frac{1}{2}\end{array}[/tex]
Funkction.
We have the functions:
[tex]f(x)=\sqrt[3]{2x}\\\\g(x)=2x+1[/tex]
Let's define the domain of the functions:
[tex]D_f:x\in\mathbb{R}\\\\D_g:x\in\mathbb{R}[/tex]
Make the function
[tex]\left(\dfrac{f}{g}\right)(x)=\dfrac{\sqrt[3]{2x}}{2x+1}[/tex]
Let's define the domain of the function:
[tex]D:2x+1\neq0\\\\2x+1-1\neq0-1\\\\2x\neq-1\\\\\dfrac{2x}{2}\neq\dfrac{-1}{2}\\\\x\neq-\dfrac{1}{2}[/tex]
Answer: A.Select whether the relation is a function or not.
((-3, 1), (-1, 3), (1, -2), (3, 3))
A. not a function
B. function
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended class recently, he doesn't know any of the answers. Assuming that Richard guesses on all ten questions, find the indicated probabilities. (Round your answers to three decimal places.)
(a) What is the probability that he will answer all questions correctly?
(b) What is the probability that he will answer all questions incorrectly?
(c) What is the probability that he will answer at least one of the questions correctly? Compute this probability two ways. First, use the rule for mutually exclusive events and the probabilities shown in the binomial probability distribution table.
Then use the fact that P(r ≥ 1) = 1 − P(r = 0).
(d) What is the probability that Richard will answer at least half the questions correctly?
Richard has a 1/5 probability of accurately answering all of the questions.
What is probability?Probability is simply the possibility that something will happen.
When we don't know how something will turn out, we can talk about the possibility of one outcome or the likelihood of several.
The study of events that fit into a probability distribution is known as statistics.
How likely something is to happen is determined by its probability.
The probability is calculated by dividing the total number of outcomes by the total number of potential events.
So, we know he probability formula which is:
P(E) = Favourable events/Total events
So, the correct answers are 10 and there are 10*5 total options.
Then, P(F) = 10 and P(T) = 10*5 = 50.
Now, insert values in the formula and calculate as follows:
P(E) = Favourable events/Total events
P(E) = 10/50
P(E) = 1/5
Therefore, Richard has a 1/5 probability of accurately answering all of the questions.
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Complete question:
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended a class recently, he doesn't know any of the answers. Assuming that Richard guesses on all ten questions, find the indicated probabilities. (Round your answers to three decimal places.)
What is the probability that he will answer all questions correctly?
Simplify negative 2 and four fifths minus 7 and two thirds.
negative 10 and seven fifteenths
negative 9 and two thirds
5 and two fifteenths
14 and seven fifteenths
Answer:
negative 10 and seven fifteenths
Answer:
1: negative 10 and seven fifteenths
PLSS HELP ALSO SHOW HOW U DID IT
y = -x - 9 is the equation of the line that passes through the points (-5. -4) and (-2, -7).
What is a Linear equation?A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.
Given a line Pass through the points (-5. -4) and (-2, -7)
The slope-intercept form of the equation of a line:
y=mx+b,
where m is the slope
b is the y-intercept
since, slope = (y - y')/(x -x')
In our case,
m = (-7 + 4)/(-2 + 5)
m = -3/3
m = -1
Thus the equation of the line will be:
y = - x +b
Since, point (-5, -4) passes through the equation of the line
-4 = 5 + b
b = -9
So,
The equation of the line:
y = -x - 9
Therefore, the equation of the line that passes through the points (-5. -4) and (-2, -7) is y = -x - 9.
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Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
Destiny is using ribbon to create girls' hair barrettes. For a craft fair in Booneville, she made 12 small barrettes and 14 large barrettes, using a total of 148 yards of ribbon. Then, for another craft fair in Newport, she made 12 small barrettes and 10 large barrettes, which used a total of 116 yards. How many yards of ribbon does Destiny use for each?
Destiny uses
yards of ribbon on each small barrette and
yards on each large one.
The number of yards of ribbon used to make small barrettes is 3 yards and the number of yards of ribbon used to make large barrettes is 7 yards.
What is a linear system of equations?A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.
Given that, Destiny is using ribbon to create girls' hair barrettes.
Let the number of yards of ribbon used to small barrettes be x and the number of yards of ribbon used to large barrettes be y.
For a craft fair in Booneville, she made 12 small barrettes and 14 large barrettes, using a total of 148 yards of ribbon.
Now, the equation is 12x+14y=148 -------(i)
For another craft fair in Newport, she made 12 small barrettes and 10 large barrettes, which used a total of 116 yards.
So, the equation is 12x+10y=116 -------(ii)
Subtract equation (ii) from equation (i), we get
12x+14y-(12x+10y)=148-116
4y=32
y=8
Substitute y=7 in equation (i), we get
12x+14(8)=148
12x+112=148
12x=36
x=3
Therefore, the number of yards of ribbon used to make small barrettes is 3 yards and the number of yards of ribbon used to make large barrettes is 7 yards.
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find the solution of the initial value problem y'' 4y = t^2 7e^t, y(0) = 0, y'(0) = 2
The values of A,B,C are 1/4,0.-1/8 respectively.
If the degree of both f(x,y) and g(x,y) are the same, a differential equation of the form f(x,y)dy = g(x,y)dx is said to be homogeneous. For k>0, a homogeneous function of degree n is a function of type F(x,y) that may be expressed in the form kn F(x,y). As a result, f and g are the same-degree homogeneous functions of x and y.
The characteristic equation of homogeneous problem and its zeros:
r²+4=0
r= ±2i
Homogeneous solution:
yc=c1 cos 2t+ c2 sin 2t
set Y1= At²+ Bt+C
Plugging in Y1 into the starting equation:
2At+ 4At²+ 4Bt+4C=t²
A=1/4
B=0
2A+4C= 0
4C= -1/2
C= -1/8
Thus, the values of A,B,C are 1/4,0.-1/8 respectively
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Let f be the function defined above, where k is a positive constant. For what value of k, if any, is continuous? 2.081 2.646 8.550 There is no such value of k.
k=2.081, f(x) is continuous at x=3. So correct option is A.
What do mean by continuity in function?In mathematics, a continuous function is one where a continuous variation of the argument results in a continuous variation of the function's value (i.e., a change without a leap). This indicates that there aren't any discontinuities, or sudden changes in value. More specifically, a function is continuous if it is possible to guarantee that its value will not vary significantly even with arbitrarily tiny changes to its parameter. Any function that is not continuous is said to be discontinuous. Mathematicians up until the 19th century mostly used intuitive ideas of continuity and only took into account continuous functions. To formalize the idea of continuity, the epsilon-delta definition of a limit was established.
Since f(x)[tex]\left \{ {{k^{3}+x } for x < 3 \atop {\frac{16}{k^{2}-1 }for x\geq 3 }} \right.[/tex]
We have to check continuity at x=3, for the value of k.
So, [tex]\lim_{x \to-3 \ } f(x)= \lim_{x \to +3\ } f(3)[/tex], eq.(1)
[tex]\lim_{x \to -3\ } f(x)=k^{3} + 3\\ \lim_{x \to +3\ } f(x)= \frac{16}{k^{2}-3 } and f(3)=\frac{16}{k^{2}-3 } \\from eq.(1)\\k^{3}+3=\frac{16}{k^{2} -3}[/tex]
By option (A), put k= 2.081= 2.081³ + 3= [tex]\frac{16}{2.081^{2} -3}[/tex]
=9.01189744+3= [tex]\frac{16}{4.330561-3}[/tex]
=12.01189744=[tex]\frac{16}{1.330561}=12.0118974[/tex]
Hence, k=2.081, f(x) is continuous at x=3.
So, option A is correct.
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sara recently drank a 20-oz. bottle of soda that contained 65 grams of added sugar. approximately, how many teaspoons of sugar is this?
Sara drank approximately 16.25 teaspoons of sugar in her 20-oz. bottle of soda.
This calculation is determining the amount of sugar that was consumed by Sara in her 20-oz. bottle of soda. The amount of sugar is given as 65 grams, and we are converting this quantity from grams to teaspoons.
One teaspoon of sugar is equivalent to 4 grams of sugar, so we divide the number of grams by 4 to find the number of teaspoons. The calculation is 65 grams divided by 4 grams/teaspoon, which gives us 16.25 teaspoons.
There are approximately 4 grams of sugar in a teaspoon, so 65 grams of sugar is equal to:
65 grams / 4 grams/teaspoon = 16.25 teaspoons
So, Sara drank approximately 16.25 teaspoons of sugar in her 20-oz. bottle of soda.
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Devi had five time a many weet a Sally. Both of them bought an equal number of weet. In the end, Sally had 48 weet and Devi had twice a many weet a Sally. What i the difference in the number of weet between the two girl at firt?
The difference between the two girl at first is 120 - 24 = 96 weet.
Difference in Weet NumberI determined the answer by using algebra. I started by defining the original number of weet that Sally had as x. Then, I used the information given in the problem to set up two equations:
x + x = 48 (because both of them bought an equal number of weet and in the end, Sally had 48 weet)2x = 48 (because Devi had twice as many weet as Sally in the end)Next, I solved for x by dividing both sides of the second equation by 2:x = 24
Now that I know that Sally originally had 24 weet, I can use that information to find the original number of weet that Devi had. According to the problem, Devi had five times as many weet as Sally, so:
Devi = 5 * 24 = 120Finally, I subtracted Sally's original number of weet (24) from Devi's original number of weet (120) to find the difference between the two:
Difference = 120 - 24 = 96So, the difference between the two girls at first was 96 weet.
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Raina deposited $5000 into an account with a 9. 4% annual interest rate, compounded quarterly. Assuming that no withdrawals are made, how long will
it take for the investment to grow to $8935?
Do not round any intermediate computations, and round your answer to the nearest hundredth.
It will take 0.6431 years or approximately 7.7 quarters for the investment to grow to $8935.
Raina deposited $5000 into an account with a 9. 4% annual interest rate, compounded quarterly.
To calculate the time it takes for an investment to grow to a certain amount at a given interest rate, you can use the formula:
T = [tex]\frac{log(\frac{A}{P}) }{log(1+\frac{r}{n}) }[/tex]
where:
T is the time in years
A is the final amount ($8935)
P is the initial amount ($5000)
r is the annual interest rate (9.4%)
n is the number of times compounded per year (quarterly = 4 times)
Plugging in the values, we get:
T = (log(8935 / 5000)) / (log(1 + 0.094 / 4))
T = [tex](\frac{log(1.787)}{log(1.0225)} )[/tex]
T = 0.6431 years or approximately 7.7 quarters (rounded to 2 decimal places).
Therefore, it will take 0.6431 years or approximately 7.7 quarters.
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a second-stage smog alert has been called in a certain area of los angeles county in which there are 70 industrial firms. an inspector will visit 10 randomly selected firms to check for violations of regulations. (a) if 28 of the firms are actually violating at least one regulation, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation?
The required pmf is P(X=x) = [tex]\frac{\binom{28}{x}\binom{70 - 28}{10 - x}}{\binom{70}{10}}[/tex]
A probability mass function (pmf) is a function over the sample space of a discrete random variable X which gives the probability that X is equal to a certain value. Let X be a discrete random variable on a sample space S . Then the probability mass function f(x) is defined as. f(x)=P[X=x]. f ( x ) = P [ X = x ] .
as given, if 28 of the firms are actually violating at least one regulation, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation.
so,
Let X denote the number of firms that violate at least one regulation from 10 randomly selected firms out of 70 firms of which 28 violate at least one regulation.
P(X=x)
= Hyper(x; n = 10, M = 28, N = 70)
= h(x; 10, 28, 70)
= [tex]\frac{\binom{28}{x}\binom{70 - 28}{10 - x}}{\binom{70}{10}}[/tex]
Thus, the required pmf is P(X=x) = [tex]\frac{\binom{28}{x}\binom{70 - 28}{10 - x}}{\binom{70}{10}}[/tex]
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The required pmf is P(X=x) = 28Cx * (70-28)C(10-x))/70C10
A probability mass function (pmf) is a function over the sample space of a discrete random variable X which gives the probability that X is equal to a certain value. Let X be a discrete random variable on a sample space S . Then the probability mass function f(x) is defined as. f(x)=P[X=x]. f ( x ) = P [ X = x ] .
as given, if 28 of the firms are actually violating at least one regulation, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation.
so,
Let X denote the number of firms that violate at least one regulation from 10 randomly selected firms out of 70 firms of which 28 violate at least one regulation.
P(X=x)
= Hyper(x; n = 10, M = 28, N = 70)
= h(x; 10, 28, 70)
= 28Cx * (70-28)C(10-x))/70C10
Thus, the required pmf is P(X=x) = 28Cx * (70-28)C(10-x))/70C10
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A bathtub holds 42 gallons of water filling at a rate of 4 gallons per minute how long will it take to fill a tub?
Answer:
10 minutes 30 seconds
Step-by-step explanation:
begin by dividing the overall size of the tub by the amount of gallons per minute.
42/4=10.5
This means that in 10.5 minutes the tub would be full. .5 is half and half of one minute is 30 seconds.
how many double letter mutations are possible in 23 dna string
There are 4 possible nitrogenous bases, so for each position in the DNA sequence there are 4 options to choose from. Therefore, in a single base position there are 4 possible mutations. In a double base position, there are 4 * 4 = 16 possible mutations. This means that for 11 double base positions, there are 11 * 16 = 176 possible double letter mutations.
DNA (Deoxyribonucleic Acid) is the genetic material that encodes the instructions for the development and function of all living organisms. DNA is made up of four nitrogenous bases: adenine (A), cytosine (C), guanine (G), and thymine (T).
The sequence of these nitrogenous bases is what determines the genetic information of an organism. Mutations are changes in the DNA sequence that can occur naturally or as a result of environmental factors.
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Describe the end behavior of the graph of the function
f(x)=−5(4) x−6
. For[infinity], type in the word infinity. For−[infinity], type in -infinity (a minus sign followed by the word infinity). Make sure that you type in the word infinity with a lower case
. As x→−[infinity],f(x)→
As x→[infinity],f(x)→
End behavior of a function f defines the behavior of the function's graph at the "ends" of the x-axis. In other words, the end behavior of a function explains the graph's trend when we look to the right end of the x-axis (as x approaches +∞ ) and to the left end of the x-axis (as x approaches −∞ ).
What is function?A function is an equation with just one solution for y for every x. A function produces exactly one output for each input of a certain type. Instead of y, it is usual to call a function f(x) or g(x). f(2) indicates that we should discover our function's value when x equals 2. Example. A function is a type of rule that produces one output for one input. Alex Federspiel provided the image. y=x2 is an example of this. If you enter anything for x, you will only get one output for y. Because x represents the input value, we may say that y is a function of x.
Here,
End behavior of a function f specifies how the function's graph behaves at the "ends" of the x-axis. In other words, when we look to the right end of the x-axis (as x approaches +) and to the left end of the x-axis (as x approaches ), the end behavior of a function explains the graph's trend.
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complete the first step in determining the sum of 14 and 38.
When the two number of columns are added together, the result is 52. Therefore, 14 + 38 = 52.
14 + 38 =
The first step in determining the sum of 14 and 38 is to add the two numbers together.
14 + 38 = 52
The first step in determining the sum of 14 and 38 is to add the two numbers together. This is done by lining up the numbers according to their place values, and then adding the numbers in each column. In this case, the ones column is 4 and 8, which adds up to 12. The tens column is 1 and 3, which adds up to 4. When the two columns are added together, the result is 52. Therefore, 14 + 38 = 52.
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