As per the permutation concept the number of ways to seat 5 boys, 5 girls, and 1 (or 2) parent in a circular arrangement around a table such that no boy is to sit next to a boy and no girl is to sit next to a girl is 72,000.
The concept of permutation comes into play when we need to find the number of ways to arrange a set of elements.
We can use the formula for circular permutation, which is (n-1)! where n is the number of elements. In this case,
=> n = 11 (5 boys + 5 girls + 1 parent).
Therefore, the total number of permutations possible is
=> (11-1)! = 10!.
Next, we need to find the number of permutations possible for arranging the boys and girls.
Since each boy or girl can be placed in 5! ways (5 possible positions), the number of permutations for arranging the boys and girls becomes
=> 5! * 5! = 120 * 120 = 144,000.
Therefore, we need to divide the above result by 2. The final answer is
=> 144,000 / 2 = 72,000.
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Duretta is collecting coins and has 5/6 as many quarters as dimes. If Duretta has collected
$7.40 in all, how many of each coin does she have?
The number of dimes is 24.
The number of quarters is 20.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
10 dimes = $1
1 dime = $0.1
4 quarters = $1
1 quarter = $0.25
Now,
Number of dimes = x
Number of quarters = (5/6)x
Now,
Duretta has collected $7.40 in all.
This means,
0.1x + 0.25(5/6)x = 7.40
0.1x + 0.21x = 7.40
0.31x = 7.40
x = 7.40/0.31
x = 23.87
x = 24
And,
(5/6)x
= 5/6 x 24
= 20
We can cross-check.
24 x 0.1 + 20 x 0.25 = 7.40
2.4 + 5 = 7.40
7.40 = 7.40
Thus,
Number of dimes = 24
Number of quarters = 5/6 x 24 = 20
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WILL GIVE BRAINLY 30 POINTS
The mean absolute deviations for two sets of data are shown.
A 2-column table with 2 rows. Column 1 is labeled Set with entries 1, 2. Column 2 is labeled M A D with entries 8.4, 0.2.
The data points in Set 1 are more_____
the mean than the points in Set 2 because the mean absolute deviation is_____
.
Answer:
The data points in Set 1 are more spread out than the points in set 2
he mean than the points in Set 2 because the mean absolute deviation is Larger
Step-by-step explanation:
The mean absolute deviations for two sets of data are shown.
A 2-column table with 2 rows. Column 1 is labeled Set with entries 1, 2. Column 2 is labeled M A D with entries 8.4, 0.2.
The data points in Set 1 are more_____
the mean than the points in Set 2 because the mean absolute deviation is_____
a30 arithmetic sequence of 1,-4,-9,-14
The 30th term a30 of the sequence is -1445
How to determine the value of a30?The definition of the function is given as
arithmetic sequence of 1,-4,-9,-14
The above definitions imply that we simply subtract 5 from the previous term to get the current term
Using the above as a guide,
so, we have the following representation
First term, a = 1
Common difference, d = 5
An arithmetic sequence is represented as
a(n) = a + (n - 1)d
For the 30th term, we have
a(30) = a + 29d
So, we have
a(30) = 1 + 29 * -5
Evaluate
a(30) = -144
Hence, the value of a30 is -144
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Given the values x = 3 and y = 16, find the value of this expression.
The value of the expression is 18.
What is the value of the expression?
The value of the expression is calculated by applying the principle of order of operation as shown below.
The given expression y ÷ 4 • 3 – 6 ÷ x + 8
re-write the expression as follows;
= y/4 × 3 - 6/x + 8
where;
y is given as 16x is given as 3The value of the expression is calculated as;
= ( 16 / 4 ) x 3 - 6 / 3 + 8
= ( 4 x 3 ) - ( 2) + 8
= ( 12 ) - 2 + 8
= 12 - 2 + 8
= 18
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The complete question is below:
Given the values x = 3 and y = 16, find the value of this expression, y ÷ 4 • 3 – 6 ÷ x + 8
how many possible ways we can select 6 cards from a deck of 52 cards, if the spade ace must be selected?
There are 2,118,760 possible ways to select 6 cards from a deck of 52 cards if the spade ace must be selected.
If at all you must select the spade ace, you have 51 cards remaining from which to choose 5 more cards. The number of ways to choose 5 cards from 51 is 51C5, where C represents the number of combinations.
Using the formula for combinations, we have:
51C5 = 51! / (5! * (51 - 5)!) = 51! / (5! * 46!)
Using the factorial we can simplify this expression to:
51C5 = 51 * 50 * 49 * 48 * 47 / (5 * 4 * 3 * 2 * 1) = 2,118,760
Therefore, there are 2,118,760 possible ways to select 6 cards from a deck of 52 cards, if the spade ace must be selected.
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the area of a sector of a circle is 56 square centimeters and the radius is 10 cm. find the central angle. round to the nearest degree.
The central angle is 63.6 degrees, which can be rounded to the nearest degree as 64 degrees.
The formula for the area of a sector of a circle is [tex]A = (θ/360) * π * r^2,[/tex] where θ is the central angle in degrees, π is 3.14, and r is the radius of the circle.
Given the area of a sector of a circle is [tex]56 cm^2[/tex] and the radius is 10 cm, we can solve for θ:
[tex]56 cm^2 = (θ/360) * 3.14 * 10^2\\56 cm^2 = (θ/360) * 314\\θ = (56 * 360) / 314\\θ = 63.6[/tex]
Therefore, the central angle is 63.6 degrees, which can be rounded to the nearest degree as 64 degrees.
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Use rhombus ABCD to answer the following.
Check the picture below.
What is the length of one side of a square if it’s area is 100 square centimeters a: 100 cm b:40cm c: 25 cm d:10 cm
What number is 7% smaller than 96
Answer:
89.28
Step-by-step explanation:
First lets find 7% of 96
96 x 0.07 = 6.72
then subtract 6.72 from 96
96-6.72=89.28
The requried, a number that is 7% smaller than 96 is approximately 89.28.
To find a number that is 7% smaller than 96, we need to calculate 7% of 96 and then subtract that value from 96.
Calculate 7% of 96.
7% of 96 = (7/100) * 96 = 0.07 * 96 = 6.72
To get a number that is 7% smaller than 96, we need to subtract the value we found in Step 1 from 96. subtract the calculated value from 96.
Number = 96 - 6.72 = 89.28
Therefore, a number that is 7% smaller than 96 is approximately 89.28.
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Question 6 mathematics
The quadratic regression equation is given as follows:
y = -0.02x² + 0.14x + 19.6.
How to obtain the regression equation?Regression equations are obtained inserting the points of a data-set into a calculator.
In this problem, we want to find the quadratic regression equation, hence a quadratic regression calculator is used.
The points for this problem are given as follows:
y = -0.02x² + 0.14x + 19.6.
Meaning that the fourth option is the correct option.
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Please help me I’ve been stuck
Answer:
Below
Step-by-step explanation:
This is a two-stage problem
for the first 12 years use cont compounding formula
FV = PV e^(rt) Future value Presnt value r = decimal int t = years
= 2000 e^(.05 * 12) = 3644.24 use this amount for the second stage
Fv = pv e^(rt) = 3644.24 ( e^(.08*8) ) = $ 6911.23
Here are the probabilities of randomly picking certain letters from a box:
P(A) = 1 5
P(B) = 3 7
P(C) = 1 6
P(D) = 1 7
What is the probability of picking an A, B or C?
Hint: Add the probabilities of the events you want to happen!
The probabilities of picking an A, a B or a C is given as follows:
167/210.
How to obtain a probability?A probability is obtained by the division of the number of desired outcomes by the number of total outcomes in the context of a problem.
For each event, the probabilities in this problem are given as follows:
P(A) = 1/5.P(B) = 3/7.P(C) = 1/6.P(D) = 1/7.To find the or probability, we add the probabilities of the desired outcomes, hence:
P(A) + P(B) + P(C) = 1/5 + 3/7 + 1/6 = (42 + 90 + 35)/210 = 167/210.
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You roll a 6-sided die two times.
What is the probability of rolling a 3 and then rolling a 6?
Answer: 2/6 or 2/12 (Go with 2/6)
Step-by-step explanation:
1/6 probability of rolling any one number. Add the probabilities for rolling a 3 (1/6) and rolling a 6 (1/6) and there is a 2/6 chance of rolling those numbers. it can also be 2/12 if you are looking at both dice rolls like one function.
it it is 1/6 because it the probability of rolling a 3 and then rolling a 6
How should this model be completed to represent 377 ÷ 12?
Enter your answers in the boxes.
This model must be completed to represent 377 ÷ 12 as follows;
30 1___
12 | 360 | 17 | 5.
How to divide the given numbers by using the box method?In order to divide the given numbers by using the box method, we would write an expression to represent the number of times in which the number (377) can be divided by the number (12), while including the remainder (17) as follows;
377 ÷ 12 = (360 + 17) ÷ 12
377 ÷ 12 = (360 ÷ 12) + (17 ÷ 12)
377 ÷ 12 = 30 + (17 ÷ 12)
Note: 12 would divide 17 to give an output of one (1) remainder five (5).
In this context, the above mathematical expression would be re-written as follows;
377 ÷ 12 = 30 + 1 R 5.
Where:
The variable R represents remainder.
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how many hours per week would a student need to plan for completing assignments outside of class when taking thirteen credit hours?
A student taking thirteen credit hours should plan for approximately 13-15 hours of work outside of class each week.
Generally, if a student is taking thirteen credit hours, they should plan for approximately 13-15 hours of work outside of class each week. This includes attending lectures, studying, and completing assignments. To calculate this, the student should take the total number of credit hours (13) and multiply it by the number of hours per credit (usually 3 hours). This would give the student 39 hours of work outside of class.
However, this number should not be taken as an exact number, as the amount of time needed to complete the course may vary based on the student's learning style, the difficulty of the course, and the amount of time required for each assignment. For example, if a student is taking a particularly difficult course, they may want to plan for more hours than the calculation suggests.
In order to ensure success, students should plan ahead, create a schedule, and stick to it. This will help them stay on track and complete their coursework in a timely manner.
A student taking thirteen credit hours should plan for approximately 13-15 hours of work outside of class each week.
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a) Complete the table of values for
y = 2x² + x
X -2 -1
y
1
0 1
3
2
Here's the completed table of values for y = 2x^2 + x
7,1,9
How to calculate the values of X and Y?To find the value of y for each x, substitute x into the equation and simplify:
For [tex]x = -2: y = 2(-2)^2 + (-2) = 7[/tex]
For[tex]x = -2: y = 2(-2)^2 + (-2) = 7[/tex]
For[tex]x = 0: y = 2(0)^2 + 0 = 1[/tex]
For [tex]x = 1: y = 2(1)^2 + 1 = 4[/tex]
For[tex]x = 2: y = 2(2)^2 + 2 = 9[/tex]
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write a rule to the sequence 2 3/4,4 1/8 ,6 7/8 ,8 1/4
Answer:
2 6/13
Step-by-step explanation:
is x+5 a facotr of f(x)=x3-4x2+3x+7 explain
After solving the given equation, the value of variable x is 7/2 so x+5 is not the factor of given equation.
Equation: f(x)=x3-4x*2+3x+7
Is x+5 is a factor of given equation:Here we have equation or algebric expression to solve to check whether the given condition is correct or not.
Give:
x3-4*2+3x+7= 0
Multiply the monomials
3x- 8x+3x+7= 0
Combine like terms
-2x+7= 0
Rearrange variables to the left side of the equation
-2x= -7
Divide both sides of the equation by the coefficient of variable
x= [tex]-7/-2[/tex]
Determine the sign for multiplication or division
x= [tex]7/2[/tex]
The value of x is [tex]7/2[/tex].
So x+5 is not a factor of f(x)=x3-4x*2+3x+7.
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You invest an amount in an account that has a annual interest rate of 6%, compounded monthly for two years. What is the equivalent interest rate, and how many times will the money be compounded? (To find monthly, divide by 12)
5.0% and 12 times
0.75% and 2 time
0.7% and 4 times
0.5% and 24 times
The equivalent interest rate will be 0.5 % and it will be compounded 24 times
What is compound interest?Compound interest is the interest you earn on interest. This can be illustrated by using basic math: if you have $100 and it earns 5% interest each year, you'll have $105 at the end of the first year. At the end of the second year, you'll have $110.25.
Compound interest is calculated by calculating the Amount
A = P( 1+r/n)^ ntp
A = amount
P is the principal
t is the time elapsed
since the interest rate is 6 % , the. monthly compounded interest will be 6/12, since there is 12 months in a year.
= 0.5 %
the number of times it will be compounded will be 12 × 2 = 24 times
therefore the equivalent interest rate is 0.5% per month and it will be compounded 24 times in the space of 2 years.
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if the owner have a kiving room with lenght 12 meter and widht 5 meter, than decides to increase the living room dimensions by 20%, what is the new length and width of the living room floor?
The new length of the living room floor would be 14.4 meters and the new width would be 6 meters.
1. Original Length = 12 meters
2. Original Width = 5 meters
3. Increase by 20%
4. New Length = 12 + (20% of 12) = 12 + 2.4 = 14.4 meters
5. New Width = 5 + (20% of 5) = 5 + 1 = 6 meters
The original length of the living room floor was 12 meters and the original width was 5 meters. The owner decided to increase the living room dimensions by 20%, so the new length of the living room floor is 14.4 meters and the new width is 6 meters. This is calculated by adding 20% of the original length and width to the original values. For the length, this is 12 + (20% of 12) which is 12 + 2.4 = 14.4 meters. For the width, this is 5 + (20% of 5) which is 5 + 1 = 6 meters. The increase of 20% in the dimensions of the living room floor makes it look more spacious and inviting.
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Graph each equation using a table of values
y = 2x² + 4x
The solution is, the table is, for, x= 0, 1, 2, we get, y= 0, 6, 16.
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
given that,
y = 2x² + 4x
now, for, x= 0 , y = 0
for, x= 1, y = 6
for, x= 2, y = 16
Hence, The solution is, the table is, for, x= 0, 1, 2, we get, y= 0, 6, 16.
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Select all of the inequalities that are true if `x=4`.
The inequality is x<10, which is true when `x=4`.
What is an inequality?A declaration of an order relationship between two numbers or algebraic expressions, such as greater than, greater than or equal to, less than, or less than or equal to. An inequality is a relation that compares two numbers or other mathematical expressions in an unequal way. [1] The majority of the time, size comparisons between two numbers on the number line are made. Different types of inequalities are represented by a variety of notations, including:
The symbol a< b indicates that an is smaller than b.
When a > b is used, it indicates that an is bigger than b.
here, we have,
Given Data,
`x=4
so, from the given inequality, we get,
The inequality is x<10, which is true when `x=4`.
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What system of inequalities is shown by the graph?
The system of inequalities is y >= 3x and y > 3 - x
How to determine the system of inequalitiesFrom the question, we have the following parameters that can be used in our computation:
The graph
The inequalities on the graph are linear inequalites
So, we first write out their equations as follows:
y = 3x --- red line
y = 3 - x -- blue line
For the red line, we have
Thick line and the upper region is shaded
This is represented as y >= 3x
For the red line, we have
Dotted line and upper region is shaded
This is represented as y > 3 - x
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consider three different processors p1, p2, and p3 executing the same instruction set. p1 has a 3 ghz clock rate and a cpi of 1.5. p2 has a 2.5 ghz clock rate and a cpi of 1.0. p3 has a 4.0 ghz clock rate and has a cpi of 2.2. true or false
Part a: P2 processors therefore performs the best out of the three.
Part b: Number of Cycles are found.
Part c: New Clock rate for each processors is found.
Explain about the highest performance of processors processors?High-speed data processing and intricate calculations are capabilities of high-performance computing (HPC).
1.
P1: 3GHz / 1.5 = 2 × 10^9 instructions / second
P2: 2.5GHz / 1.0 = 2.5 × 10^9 instructions / second
P3: 4GHz / 2.2 = 1.82 × 10^9 instructions / second
2. Number of Cycles:
P1: 3GHz × 10 = 3 * 10^10 cycles
P2: 2.5GHz × 10 = 2.5 × 10^10 cycles
P3: 4GHz ×10 = 4 × 10^10 cycles
Number of instructions:
P1: 3GHz × 10 / 1.5 = 2 × 10^10 instructions
P2: 2.5GHz × 10 / 1.0 = 2.5 × 10^10 instructions
P3: 4GHz × 10 / 2.2 = 1.82 × 10^10 instructions
3. Execution time = (Number of instructions * CPI) / (Clock rate)
Therefore, if CPI rises by 20% but we aim to cut the execution time to 30%, we have:
Execution time × 0.7 = (Number of instructions × CPI × 1.2) / (New Clock rate)
New Clock rate = Clock rate × 1.2 / 0.7 = 1.71 * Clock rate
New Clock rate for every processor:
P1: 3GHz × 1.71 = 5.13 GHz
P2: 2.5GHz × 1.71 = 4.27 GHz
P3: 4GHz × 1.71 = 6.84 GHz
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The correct question is-
Performance:
Consider three different processors, P1 P2 and P3, executing the same instruction set.
P1 has a 3 GHz clock rate and a CPI of 1.5. P2 has a 2.5 GHz clock rate and a CPI of 1.0.
P3 has a 4.0 GHz clock rate and a CPI of 2.2.
1. Which processor has the highest performance expressed in instructions per second?
2. If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions.
3. We are trying to reduce the execution time by 30% but this leads to an
increase of 20% in the CPI. What clock rate should we have to get this time reduction?
Which equations could be used to solve for the unknown lengths of △ABC? Check all that apply.
sin(45°) = StartFraction B C Over 9 EndFraction
sin(45°) = StartFraction 9 Over B C EndFraction
9 tan(45°) = AC
(AC)sin(45°) = BC
cos(45°) = StartFraction B C Over 9 EndFraction
The equations that could be used to solve for the unknown lengths of △ABC are cos45° = AC/9 and sin45° = BC/9.
What are trigonometric ratios in terms of a right-angle triangle?We know a right-angled triangle has three sides they are -: Hypotenuse,
Opposite and Adjacent.
We can remember SOH CAH TOA which is,
sin = opposite/hypotenuse, cos = adjecent/hypotenuse and
tan = opposite/adjacent.
The opposite side to the reference angle is BC and the adjacent is the height.
We know, cos = adjacent/hypotenuse
Therefore, To determine AC we'll use cos45° = AC/9.
Also, To determine BC we'll use sin45° = BC/9.
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how did you get 16 after adding 20 from both sides? when I do -8 plus 20, I get 12, not 16?
Answer:
So if there were -4+20 the answer would be 16. When you add things, it goes to the right of the number line. When you subtract stuff it goes to the left. Simple but there are more rules like when this happens: 6--4 the two minuses turn into a plus 6+4—and other stuff. So -8 you have 8 negative signs and 20 positive signs. When a positive and a negative are added together they cancel each other out so now you have 12. This is modeled on the attachment. Hope this helped!
Step-by-step explanation:
Two linear functions are shown. Which function has the greater initial value? and what are the initial values for both
The function with the greater initial value is (a) the function A
How to determine the function with the greater initial valueThe complete question is added as an attachment
The initial value of a function is calculated when
x = 0
From the table of values, we have
y = 8 when x = 0
For the other function, we have
y = 4x + 3
So, the initial value is
y = 4(0) + 3
Evaluate
y = 3
8 is greater than 3
Hence, the function with the greater initial value is the table of values
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What is the surface area of this rectangular prism?
the surface area of the rectangular prism is 348 inches²
What is the surface area of a rectangular prism?The surface area of a rectangular prism is given by: SA = 2 (lh +wh + lw ) Square units.
Given here: A rectangular prism with dimensions are 6 in.
We know the surface area of a prism is given by
2(wl+hl+hw)
where l is the length , w is width and h is the height.
Thus Surface area A=2(wl+hl+hw)
2·(8·6+9·6+9·8)=348
Thus the surface area of the rectangular prism is 348 inches²
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Half the fish in a tank are rainbow fish. 20% are Gouramis and the rest are Corydoras. Write the ratio of rainbow fish to gouramis to corydoras in the simplest form.
Originally, there were 20fish. 3 more rainbow fish are added. What fraction of the fish in the tank are now rainbow fish?
How do I solve this question?
As total = 4100
Insurance = 123/4100*100 = 3%
Housing = 574/4100*100 = 14%
Entertainment = 164/4100*100 = 4%