Step-by-step explanation:
Michael needs to pay car insurance premiums of $958 two times per year. Since a year has 52 weeks, this means he needs to pay $958 * 2 = $1916 per year.
Since his paycheck is bi-weekly, he needs to make a deposit of $1916 / 26 = $73.54 from each paycheck to cover the expense.
So Michael should deposit $73.54 from each bi-weekly paycheck to a savings account for "Other Expenses (Predictable)" to cover the car insurance premiums.
How long will it take to fill a cylinder-shaped vat (with a radius of 32.5 ft and depth of 33.9 ft) with a certain liquid (d = 1.77 g/mL) if it is spilling out of the hose at 12,757.9 g/s? a. 1.23×102hr
b. 1.53×10−7hr
c. 1.08×108 hr
d. 1.98 hr
e.6.65×109hr
Answer:A 1.23 x 102hr
Step-by-step explanation:
It will take 1.23 x 10^2 hours to fill a cylinder-shaped vat.
What is the volume of the cylinder?
A cylinder's volume is π r² h, and its surface area is 2π r h + 2π r².
The volume of the cylinder-shaped vat can be calculated as follows:
V = π * r^2 * h
= π * 32.5^2 * 33.9 ft^3
The mass of the liquid in the vat can be calculated as the product of its volume and density:
m = d * V
= 1.77 g/mL * π * 32.5^2 * 33.9 ft^3
The time it takes to fill the vat can be calculated as the ratio of the mass of the liquid to the rate at which it is spilling out of the hose:
t = m / (12,757.9 g/s)
Converting the volume to liters, the density to kg/m^3, and the time to hours, the answer is approximately 1.23 x 10^2 hours.
Hence, it will take 1.23 x 10^2 hours to fill a cylinder-shaped vat.
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Accurately construct triangle ABC using the information below. AB = 9 cm AC = 6 cm Angle BAC = 80° Measure the size of angle ACB to the nearest degree.
Using the concept of sine rule and cosine rule, the value of angle ACB is
36.64°
What is sine ruleThe sine rule is a mathematical formula used in trigonometry to find the relationship between the sides and angles of a triangle. It states that the sine of one of the angles in a triangle is equal to the ratio of the length of the side opposite that angle, divided by the length of the hypotenuse. The formula can be written as:
sin(A) = a / c
where A is one of the angles in the triangle, a is the length of the side opposite angle A, and c is the length of the hypotenuse. The sine rule is commonly used to find the length of one side of a triangle when the lengths of the other two sides and one angle are known. Another form of the sine rule is the "ambiguous case" formula, which can be used to find one of the angles in a triangle when the lengths of all three sides are known:
a / sin(A) = b / sin(B) = c / sin(C)
where A, B, and C are the angles in the triangle, and a, b, and c are the lengths of the sides.
In the given problem, we can simply substitute the values into the formula and then solve for the unknown angle.
a / sin A = b / sin B = c / sin C
But since we don't know the value of BC, we can find that first using cosine rule.
a² = b² + c² - 2(bc) cos A
a² = 9² + 6² -2(9)(6)cos80
a² = 98.23
a = √98.23
a = 9.9
Going back to using sine rule;
a / sin A = b / sin B = c / sin C
9.9 / sin 80 = 6 / sin C
sin C = (6 sin 80) / 9.9
sin C = 0.5968
C = sin⁻¹(0.5968)
C = 36.64°
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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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EASY POINTS, PLEASE HELP ASAP, WILL MARK FIRST ANSWER BRAINLESIT,
restaurant at the food court in a mall is offering a lunch special. The table shows the relationship between the number of side dishes and the total cost of the special.
Restaurant
Number of Side Dishes Total Cost
2 $8.50
4 $11.50
5 $13.00
8 $17.50
Which of the following graphs shows the relationship given in the table?
Answer: The last graph
Step-by-step explanation:
i did the test on flvs .
The last graph shows the relationship given in the table
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
Slope = 11.50-8.5/4-2
=1.5
Let us take a point (5, 13), let us check this point which correctly matches the graph
Hence, the last graph shows the relationship given in the table
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Fill in the table using this function rule.
y=4x-15
X
4
7
8
9
X
y
0
0
5
Answer:
Step-by-step explanation:
76
Yui is buying beverages for her friends. She buys a total of 6 bottles of water and sports drinks. Bottles of water cost $1.50 each, and sports drinks cost $2.50 each. She spends a total of $10. Write a system of equations to represent the information, and use substitution to determine how many of each type of drink Yui buys.
Answer:
Let x be the number of bottles of water that Yui buys, and y be the number of sports drinks. The first equation represents the total number of bottles:
x + y = 6
The second equation represents the total cost:
1.5x + 2.5y = 10
To solve for x and y, we can use substitution. Solving the first equation for y in terms of x:
y = 6 - x
Substituting this expression for y into the second equation:
1.5x + 2.5(6 - x) = 10
Expanding and simplifying the right side:
1.5x + 15 - 2.5x = 10
-x + 15 = 10
Subtracting 15 from both sides:
-x = -5
Dividing both sides by -1:
x = 5
Substituting this value for x back into y = 6 - x:
y = 6 - 5
y = 1
So Yui buys 5 bottles of water and 1 bottle of sports drink.
Step-by-step explanation:
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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4 in
6 in.
4 in
Find the aria of the shaded region
Check the picture below.
first off let's get the area of the "circular ring", and then let's add to that the area of the innermost circle with a radius of 6.
[tex]\textit{area of a circular ring}\\\\ A=\pi (R^2 - r^2) ~~ \begin{cases} R=\stackrel{outer}{radius}\\ r=\stackrel{inner}{radius}\\[-0.5em] \hrulefill\\ R=14\\ r=10 \end{cases}\implies A=(14^2-10^2)\implies A=96\pi \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2 ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=6 \end{cases}\implies A=\pi (6)^2\implies A=36\pi \\\\[-0.35em] ~\dotfill\\\\ 96\pi ~~ + ~~36\pi \implies 132\pi ~~ \approx ~~ \text{\LARGE 414.69}~in^2[/tex]
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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Between 1590
and 1613, William Shakespeare wrote many famous plays.
About 2/5
of his plays are comedies, such as The Merchant of Venice. About 3/10
are tragedies, such as Romeo and Juliet.
Give an equivalent fraction for each fraction using the common numerator 6
.
2/5= ?
3/10 = ?
I need help please
The equivalent fractions, with a common numerator of 6, are given as follows:
2/5 = 6/15.3/10 = 6/20.How to obtain the equivalent fractions?A fraction is a numerical representation of the division of the two terms x and y that composed the fraction, as follows:
Fraction = x/y.
The terms are named as follows:
The top term x is the numerator of the fraction.The bottom term y is the denominator of the fraction.Equivalent fractions are fractions for which the ratio of the numerator and the denominator is the same.
For fraction 2/5, the numerator is of 2, hence 6/2 = 3 and the equivalent fraction is obtained as follows:
(2 x 3)/(5 x 3) = 6/15.
For fraction 3/10, the numerator is of 3, hence 6/3 = 2 and the equivalent fraction is obtained as follows:
(2 x 3)/(2 x 10) = 6/20.
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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).
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
Elena bowls two games on Saturday. Her score in the second game is 30
more than 3/4
of her score in the first game. Elena’s total score for the two
games is 478. What was the Elena’s score in the first game? Second?
Elena's total score for the two games is 478, with her score in the first game being 224 and her score in the second game being 254.
Let 'x' be Elena's score in the first game and 'y' be Elena's score in the second game.
We know that the total score for the two games is 478, so we can write the following equation:
x + y = 478
We also know that the score in the second game is 30 more than 3/4 of Elena's score in the first game. We can write this as:
y = x + 30
Substituting this into the first equation gives:
x + x + 30 = 478
Simplifying gives:
2x + 30 = 478
Subtracting 30 from both sides gives:
2x = 448
Dividing both sides by 2 gives:
x = 224
So, Elena's score in the first game is 224. Substituting this value into the equation for the second game gives:
y = 224 + 30
So, Elena's score in the second game is 254.
In summary, Elena's total score for the two games is 478, with her score in the first game being 224 and her score in the second game being 254.
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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.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 brine solution of salt water with concentration 0.5kg/l flows at a constant rate of 4l/min into a large tank that initially held 500l of pure water. the solution inside the tank is kept well stirred and flows out of the tank at a constant rate of 2l/min. a. determine x(t), the mass of the salt in the tank after t minutes. b. now assuming the tank can hold a maximum volume of 600l, determine the mass of the salt when the tank begins to overflow
The mass of the salt in the tank after t minutes is t kg. The tank begins to overflow after 300 minutes, and the mass of the salt in the tank is 300 kg.
a. To determine x(t), the mass of the salt in the tank after t minutes, we can use the principle of mass balance:
x(t) = 0.5 * [Vin(t) - Vout(t)]
where
Vin(t) = the volume of brine solution that flows into the tank after t minutes
Vout(t) = the volume of brine solution that flows out of the tank after t minutes.
Vin(t) = 4t
Vout(t) = 2t
Therefore:
x(t) = 0.5 * [4t - 2t] = 0.5 * 2t = t
So, the mass of the salt in the tank after t minutes is t kg.
b. To determine the mass of the salt when the tank begins to overflow, we need to find the time when the volume of brine solution in the tank reaches 600l.
Vin(t) - Vout(t) = 600
4t - 2t = 600
2t = 600
t = 300
So, the tank begins to overflow after 300 minutes, and the mass of the salt in the tank is 300 kg.
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Exponential Functions
The correct expression for the given scenario is,
⇒ y = 6 × 4³
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
A population has a beginning number is 6.
Now, A population has a beginning number is 6.
Hence, The population if it expands at a rate of 4 for 3 years is,
⇒ y = 6 × 4³
Thus, The correct expression for the given scenario is,
⇒ y = 6 × 4³
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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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Select whether the relation is a function or not.
((-3, 1), (-1, 3), (1, -2), (3, 3))
A. not a function
B. function
heyy!! please help me on this, thank u!!
Find the x-intercept and ordered pair:
2x + 3y = -6
Answer:
Step-by-step explanation:I don’t know u nerdy boy
Evaluate the expression 10(x + 2) + 10 • 2 for x = 2. A. 20 B. 60 C. 40 D. 80
The value of the expression when x = 2 is
How to evaluate the expressionFrom the question, we have the following parametes that can be used in our computation:
10(x + 2) + 10 • 2
The expression 10(x + 2) + 10 * 2 for x = 2 is:
10(2 + 2) + 10 * 2
So, we have the following representation
10 * 4 + 10 * 2 =
So, we have the following representation
40 + 20
Lastly, we have
= 60
So, the answer is B. 60.
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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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Suppose that the universal set s is defined as S= {1, 2, 10} and and c 17, 8, 9, 10 a. Find AUB b. Find (AUC) - B c. Find Au(B-C) d. Do A, B, and c form a partition of s?
AUC - B = 17 and AUB = 1, 2, 8, 9, 10, The partition of S formed by A, B, and C is not Au(B-C) = 1, 2, 8, 9, 10, or 17.
Finding the union of A and B requires us to identify every element that is either in A, B, or both. Here, A = 17 and B = 8, 9, and 10 respectively. So AUB = {1, 2, 8, 9, 10, 17}.
Finding (AUC) - B requires us to identify the components of the union of A and C minus the components of B. Here, A equals 17, B equals 8, 9, and 10, and C equals 17. Therefore, (AUC) - B = 17.
To determine Au(B-C), we must first identify the components of the union of A and the difference between B and C. Here, A equals 17, B equals 8, 9, and 10, and C equals 17. Therefore, Au(B-C)=1, 2, 8, 9, 10, and 17.
d. S cannot be partitioned by A, B, or C since S includes items that are not present in any of those three. As an illustration, elements 1 and 2 are present in S but not in A, B, or C. Therefore, S cannot be divided into A, B, and C.
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Pls help me right now Convert the following common fractions into Percentages
1. 5/8
2. 8/9
Hello!
The following common fractions converted into percentages...
[tex]\frac{5}{8}=[/tex] 62.5%
[tex]\frac{8}{9} =[/tex] 88.8% repeating
Step-by-step explanation:
To convert a common fraction into a percentage you must first convert the fraction to a decimal and then multiply by 100
Hope this helps!
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?
Dionne can fold 175 packing boxe in 50 minute. Elia can fold 120 packing boxe in 40 minute. Ue unit rate to find how much time it will take each peron to fold 210 packing boxe. Drag the number to explain and how your anwer. Number may be ued once or not at all. 60 returned to choice lit. 370803. 54. 550604
Dionne can fold
boxe in 1 minute and Elia can fold
boxe in 1 minute. Dionne will fold 210 boxe in
minute and Elia will fold 210 boxe in
minute
It will take Dionne 60 minutes and Elia 70 minutes to fold 210 packing boxes.
To find the unit rate for each person, divide the number of boxes they can fold by the time it takes them to fold them:
Dionne: 175 boxes / 50 minutes = 3.5 boxes/minute
Elia: 120 boxes / 40 minutes = 3 boxes/minute
Next, divide the total number of boxes to be folded (210) by each person's unit rate:
Dionne: 210 boxes / 3.5 boxes/minute = 60 minutes
Elia: 210 boxes / 3 boxes/minute = 70 minutes
So, it will take Dionne 60 minutes and Elia 70 minutes to fold 210 packing boxes.
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According to a study, 72% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 72%, 6 out of 20 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum
The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is 30%.
The probability that a randomly selected school or district uses digital content is 72%. To find the probability that a randomly selected school uses digital content and uses it as part of their curriculum, we need to divide the number of schools that use digital content and use it as part of their curriculum (6) by the total number of schools (20). This gives us 6/20 or 30%. Therefore, the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is 30%.
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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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Evaluate the function when x = -2, 0, 1/2
F(x)=1.5(2)^x
G(x)=-3(1/4)^x
Answer:
Step-by-step explanation:
x = -2
F(x)=1.5(2)^x=0.375 , G(x)=-3(1/4)^x=-48
x=0
F(x)=1.5(2)^x=3, G(x)=-3(1/4)^x=-3
x=1/2
F(x)=1.5(2)^x=1.06 , G(x)=-3(1/4)^x=-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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