The value of $×$ is 3.14 units
What is perimeter ?Perimeter is the distance around the edge of a shape. The algebraic sum of the length of each side is the perimeter of that shape. We have formulas available for the various shapes in geometry.
The perimeter of a square is expressed as 4l
The circumference of a circle = 2πr
This means that;
4l = 2πr
4l = 2× 3.142 × 2
4l = 12.57
divide both sides by 4
l = 12.57/4
l = 3.14 units(nearest hundredth)
therefore the value of the side length is 3.14 units
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if the expression x^(-3/4)y^-(-4/3)∜16x^2y^4 is written in the form ax^by^c, then what is the product of a, b and c?
The value of a, b, and c will be 2, -1/4, and 7/3, respectively. Then the product of a, b, and c will be - 7/6.
What is an equivalent?The equivalent is the expression that is in different forms but is equal to the same value.
The meaning of straightforwardness is simplifying something to accomplish or get a handle on while likewise making it somewhat less troublesome.
The expression is given below.
[tex]\rm \rightarrow x^{-3/4 } \cdot y ^{-(-4/3)} \cdot \sqrt[4]{16x^2y^4}[/tex]
Simplify the expression, then we have
[tex]\rm \rightarrow x^{-3/4 } \cdot y ^{-(-4/3)} \cdot \sqrt[4]{16x^2y^4}\\\\\rightarrow x^{-3/4 } \cdot y ^{(4/3)} \cdot (16x^2y^4)^{1/4}\\\\\rightarrow x^{-3/4 } \cdot y ^{4/3} \cdot 2x^{1/2}y\\\\\rightarrow 2 x^{1/2 - 3/4} \cdot y^{4/3 + 1} \\\\\rightarrow 2x^{-1/4} \ \cdot y^{7/3}[/tex]
The given expression is [tex]\rm ax^by^c[/tex]. Compare the expression with given expressions, then we have
a = 2, b = - 1/4, and c = 7/3
Then the product of a, b, and c is given as,
⇒ 2 x (-1/4) x (7/3)
⇒ - 7/6
The value of a, b, and c will be 2, -1/4, and 7/3, respectively. Then the product of a, b, and c will be - 7/6.
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There are cups in a gallon.
The equation gives the number of cups in terms of the number of gallons.
Write an equation for this situation that gives the number of gallons in terms of the number of cups.
Answer:
16c
Step-by-step explanation:
Answer:
g = 16c
Step-by-step explanation:
Let's use g (the number of gallons) and c (the number of cups).
Since there are 16 cups in one gallon, the equation can be represented by:
one gallon = 16 cups →
g = 16c.
We use the coefficient to represent the quantity of cups needed to make one gallon.
Determine the solution to the system of equations represented by the tables below.
-3 -2
-1 0
6
4
2 0
X
f(x)
X
g(x)
-2
7
-1
2
0 1
-3-8
Answer:
(-1, 2)
Step-by-step explanation:
The solution to a system of equation will always intersect on a graph, which means that at a certain point, they will have the same x and y coordinate.
As we can see from the table, for both f(x) and g(x) when x = -1, y = 2, which is the intersection point.
what is the square root of 378 multiply by the factorial of 1 thousand divided by 10^(10^100)?
The square root of 378 is 19.4422
The square root of a number is a value that, when multiplied by itself, gives the original number. The symbol used to denote the square root is √, and it is placed in front of the number for which we are looking for the square root.
First, let's define what factorial means. The factorial of a non-negative integer is the product of all positive integers less than or equal to that number.
Next, we have to compute the square root of 378, which is a much simpler task. The square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 25 is 5 because 5 x 5 = 25. Using a calculator, we can find that the square root of 378 is approximately 19.4422.
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Complete Question:
What is the square root of 378?
g knowing the value of p tells one: select one: a. the size of the difference between two groups or means. b. whether there is statistical significance. c. the correlation between two groups or means. d. the t value.
Knowing the value of p tells one that option b. whether there is statistical significance.
The concept of probability, which is a measure of the likelihood of an event occurring. It is an essential tool in statistics, and it helps us make informed decisions based on data.
Now, let's dive into the answer to the question. Knowing the value of p tells us about the statistical significance of our results. In statistical analysis, we often conduct hypothesis tests to determine whether a particular effect is significant or just occurred by chance.
The p-value is the probability of observing the results we obtained under the null hypothesis, assuming that the null hypothesis is true. The null hypothesis is the default assumption that there is no significant difference between groups or means.
If the p-value is low, say less than 0.05, we reject the null hypothesis and conclude that there is a significant difference between groups or means. On the other hand, if the p-value is high, we fail to reject the null hypothesis, and we cannot claim that there is a significant difference between groups or means.
To give an example, suppose we conducted an experiment to test whether a new drug reduces blood pressure. We would have a control group that receives a placebo and a treatment group that receives the drug. We measure the blood pressure of both groups and compute the p-value. If the p-value is less than 0.05, we would conclude that the drug is effective in reducing blood pressure.
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suppose you believe that stress causes headaches. what is the hypothesis? explain why we would use an experiment study to test this hypothesis. identify the independent and dependent variables. explain the treatments for the experimental and control groups. make sure all parts of your potential experiment are defined and labeled
If the presented hypothesis is confirmed, it can be assumed that individuals in the experimental group suffer from headaches more frequently than those in the control group.
The study examines how stress affects headaches. The theory can be stated as follows: People who encounter stress episodes more than twice per day would feel headaches more frequently than people who do not experience stress. This question concerns a cause and effect analysis, which can be done with reliable results when using an experimental investigation. Therefore, it is advised to use an experimental design for dealing with headaches brought on by stress. Stress events are the only unchanging factor in our study, however they do cause changes in the frequency of headaches. The degree of headaches, which fluctuates when the independent variable is changed, can be thought of as the dependent variable. Here, the technique can be applied as follows: Informed consent is obtained from a sample of 400 persons, all of whom fall within the age range of 25 to 40 (to lessen the impact of any auxiliary variables on the results). The volunteers are divided into two groups at random, one of which is the experimental group and the other the control group (double-blind design to avoid any potential biases). Three times a day, participants in the experimental group are exposed to a show that is heavy on the negative feelings that can lead to stress; in contrast, individuals in the control group are not exposed to any of the shows mentioned above. Then, the presence of headaches is assessed in both groups' members.
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3. find the 95% confidence interval for the mean number of hours of tv watched each day by adults in the us. report the upper and lower bounds of the interval:
The lower and upper bounds of the given confidence interval of 95% with sample size= 1,555 , sample mean = 2.938 and standard deviation 2.837 is equal to ( 2.797 , 3.079 ).
Upper and lower bounds of the confidence interval is :
= Sample mean ± Margin of error
And Margin of error is :
= Z-critical × ( σ/√(n ) )
Standard deviation 'σ ' = 2.837
Sample size 'n' = 1,555
Sample mean 'μ' = 2.938
Z-critical for 95% confidence interval
= Zα/2
= 1.96
Margin of error
= 1.96 × (2.837/√1,555)
= 1.96 × (2.837/ 39.43 )
= 0.1410
Confidence interval:
Upper boundary
= 2.938 + 0.1410
= 3.079
Lower boundary
= 2.938 - 0.1410
= 2.797
Therefore, for the given confidence interval of 95% the lower and upper bounds of the interval are ( 2.797 , 3.079 ).
The above question is incomplete , the complete question is:
find the 95% confidence interval for the mean number of hours of tv watched each day by adults in the us. report the upper and lower bounds of the interval:
Sample size Sample mean Standard deviation
1,555 2.938 2.837
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The seats in a theater are arranged in rows with an equal number of seats in each row. The graph shows the relationship between the number of rows and the total number of seats. How many seats are in each row (The variables can only be positive numbers.)
The number of seats in each raw by the given graph is 30.
How do we make graph of a function?Suppose the considered function whose graph is to be made is
f(x)
The values of 'x' (also called input variable, or independent variable) are usually plotted on horizontal axis, and the output values
f(x)
are plotted on the vertical axis.
They are together plotted on the point
(x,y) = (x, f(x))
This is why we usually write the functions as:
y = f(x)
Let the number of rows in the original arrangement be x. Then, the number of seats in each row in original arrangement = x
Total number of seats = x x x = x²
From the given information,
2x(x-10)= x²+ 300
2x²-20x = x²+300
x²-20x-3000
(x-30) (x+10) = 0
x = 30, -10
Since, by the function number of rows or seats cannot be negative. So, x = 30.
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What is the slope of the line that passes
through the points (10, 3) and (7,0)?
Write your answer in simplest form.
Answer:
0.75
Step-by-step explanation:
The slope-intercept form is one way to write a linear equation (the equation of a line). The slope-intercept form is written as y = mx+b, where m is the slope and b is the y-intercept (the point where the line crosses the y-axis).
At soccer practice last night, Leroy made 4 times as many penalty kicks as he missed.
Pick the diagram that models the ratio in the story.
If Leroy made 9 more penalty kicks than he missed, how many penalty kicks did he make?
Penalty kicks:
The model that would model the ratio is 4 : 1
the penalties made is given as 12
How to solve for the penaltiesTo get the penalty kicks that he made given that he made 9 more penalty kicks than he missed
let the penalty kicks be
= x
if he made more than 9 than missed we would have
x + 9 = 4
x = 1
cross multiply
1 (x + 9) = 4 * X
x + 9 = 4x
9 = 3x
x = 3
since x + 9 penalties made
3 + 9 = 12
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Y less than 9 in algebra expression
Answer:
9 - y
Step-by-step explanation:
less than means Subtraction
i need help guysss
schoology
Solving an equation we will see that the measure of angle a is 68°.
How to find the measure of the missing angle?We want to find the measure of angle a. On the image we can see that we have 3 angles, and the sum of these 3 angles should be equal to 180°, then we can write the equation:
28° + 90° + a = 180°
(the 90° angle is the one with the square).
Solving that equation for a, we will get:
a = 180° - 90° - 28°
a = 90° - 28°
a = 62°
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Use the law of sines to find each missing side or angle
15
12
128
X
The missing angle is approximately 108.5 degrees.
What is the law of sines?Law of sines is a trigonometric formula that relates the sides and angles of any triangle. Specifically, the law of sines states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all sides and angles in the triangle.
Using the law of sines:
sin(128°)/15 = sin(x)/12
Multiplying both sides by 12:
sin(x) = 12sin(128°)/15
Taking the inverse sine of both sides:
x = sin^-1(12sin(128°)/15)
x ≈ 108.5°
Therefore, the missing angle is approximately 108.5 degrees.
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what is - 3x > 15 equal to
Answer:
x < -5
Step-by-step explanation:
- 3x > 15 is equal to x < -5
As Bin is driving her car, she notices that after 1 hour her gas tank has 7.25 gallons left and after 4 hours of
driving, it has 3,5 gallons of gas left in it.
(3) Represent this information as two coordinate
pairs in the form (1, g), Where A is the
number of hours driven and g is the gallons of Gas left
Bin had 7.25 gallons of gas to start with using the unitary method.
Unitary method is a problem-solving technique that involves finding the value of one unit and using it to calculate the value of other units. In this case, we will use unitary method to find the number of gallons Bin had to start with.
Firstly, we need to find the rate of gas consumption. The slope of the line, which is the change in the gas level over time, gives us this information. Since the slope is -1.25, this means Bin is losing 1.25 gallons of gas per hour.
Next, we need to find the total time Bin has been driving. From the problem, we know that after 1 hour, she had 7.25 gallons left, and after 4 hours, she had 3.5 gallons left. This means that she drove for 3 hours (4-1).
Using the unitary method, we can calculate the total amount of gas Bin had to start with. We know that she lost 1.25 gallons of gas per hour, and she drove for 3 hours. Therefore, she lost a total of 3.75 gallons of gas during the trip.
To find the initial gas level, we need to subtract the amount of gas she lost from the gas level she had at the end of the trip. This gives us:
Initial gas level = Gas level at end of trip + Gas lost during the trip
Initial gas level = 3.5 gallons + 3.75 gallons
Initial gas level = 7.25 gallons
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Complete question:
As Bin is driving her car, she notices that after 1 hour her gas tank has 7.25 gallons left and after 4 hours of driving, it has 3.5 gallons of gas left in it. The rate at which she is LOSING gas is 1.25 gallons....So, the slope is -1.25. How many gallons did she have to START?
Jorge asked each of the 24 students in his class if they play a musical instrument. He also asked each student if they play a sport. He gathered the following results:
6 students play both a musical instrument and a sport.
3 students play neither a musical instrument nor a sport.
14 students in total play a sport.
Can you help Jorge organize the results into a two-way frequency table?
How many 3-letter words can we make from the letters A, B, C, and D, if we are allowed to repeat letters, and we must use the letter A at least once?
Answer:
37
Step-by-step explanation:
AAA 1 way
AAB, AAC, AAD 3 ways each 3*3=9 ways
ABB, ACC, ADD 3 ways each 3*3=9 ways
ABC, ABD, ACD 3*2=6 ways each 3*6=18ways
1+9+9+18 = 37 ways
What is the area of the following composite figure? All angles are right angles. 22 m 2 29 m 2 24 m 2 27 m 2
The area of the composite figure is 24m², which is option C.
What is a composite figure?
A two-dimensional figure built up of fundamental two-dimensional shapes like triangles, rectangles, circles, semicircles, etc. is known as a composite shape or composite figure. To get the area of a composite shape, first determine the individual areas of every component. The total of the individual regions will then represent the area of the composite shape.
From the figure, we can see that from a big rectangle, 4 small identical squares of side 1m are cut from each corner.
We are asked to find the area of the rest of the rectangle which makes the composite figure.
W first find the area of the original rectangle.
Its length = 5 + 1 + 1 = 7 m
Its breadth = 2 + 1 + 1 = 4 m
So the area of the rectangle = length * breadth = 7*4 = 28 m²
Now the side length of the square = 1 m
Area of one square = 1*1 = 1m²
So are of four identical squares = 4 * 1 = 4 m²
Therefore area of the composite figure = area of big rectangle - area of 4 squares = 28 - 4 = 24m²
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Answer:
24m^2 is ur answer
Step-by-step explanation:
Hope this helps
y=x^2 6 units to the left 2 units up
The translation of the graph is represented by y = -6(x+2)² - 7.
What is translation ?A translation is a geometric transformation that moves every point of a figure, shape or space by the same distance in a given direction.
Given that the graph of y= x² translated left 2 units and up 8 units. The translated equation is:-
Start with y = x².
Shift 2 units left to get y = (x+2)².
Vertically stretch to get y = 6(x+2)².
Reflect across x-axis to get y = -6(x+2)².
Shift 7 units down to get y = -6(x+2)² - 7.
Hence, the translation of the graph is represented by y = -6(x+2)² - 7.
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The question is incomplete so solved for,
Suppose the graph of y= x^2 translated left 2 units, and up 8 units
What are the zeros of this function?
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Consider the function.
Match each transformation of f(x) with its description.
g(x) = 2x
g(x) = 8x
-
10
6
g(x)
f(x) = 2x - 6
= 2x - 2
g(x) = 8x 24
-
compresses f(x) by a factor
of toward the y-axis
shifts f(x) 4 units right
stretches f(x) by a factor
of 4 away from the x-axis
shifts f(x) 4 units down
g(x) = 2x - 14
g(x) = 82 - 4
The transformations are matched accordingly is given below.
What are the matching transformations?A function transformation takes whatever the underlying function f (x) is and "transforms" (or "equates") it, which is a fancy way of saying you alter the equation and shift the graph over.
Parent function is given as f(x) = 2x - 6
The transformations are shifts f(x) 4 units down
f(x) → f(x) - 4
⇒ g(x)= 2x - 6 - 4 = 2x - 10
Then stretches f(x) by a factor of 4 away from the x-axis
f(x) → 4*f(x)
⇒ g(x) = 4(2x - 6) = 8x - 24
Now shifts f(x) 4 units right
f(x) → f(x - 4)
⇒ g(x) = 2(x - 4) - 6 = 2x - 14
To compresses f(x) by a factor of toward the y-axis (must be 4)
f(x) → f(4x)
⇒ g(x) = 2*4x - 6 = 8x - 6.
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The graph of g(x) = |x – h| + k is shown on the coordinate grid. What must be true about the signs of h and k?
Both h and k must be positive.
Both h and k must be negative.
h must be positive and k must be negative.
h must be negative and k must be positive.
On solving the provided question we can say that from the graphs,
y = f(x) = |x| and g(x) = |x-h| + k
What is graphs?Mathematicians use diagrams to logically bring facts or values using visual representations or charts. A graph point usually reflects a contact between two or more things. Nodes or vertices and corner form a graph, which is a nonlinear data construction. We often glue knots together called vertices. This graph has vertices V=1, 2, 3, 5 and edges E=1, 2, 1, 3, 2, 4 and (2.5), (3.5). (4.5). Statistical charts (bar charts, pie charts, line charts, etc.) are graphical representations of expanding growth. Logarithmic graph in the format of a triangle
from the graphs,
y = f(x) = |x|
y = f(x) + k
y = f(x+h)
g(x) = |x-h| + k
now, it will be
k>0 and h<0
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A total of 709 tickets were sold for the school play. They were either adult tickets or student tickets. There were 59 more student
tickets sold than adult tickets. How many adult tickets were sold?
Solving the Question
First, assign variables to the given information:
Let the number of student tickets sold be x.Let the number of adult tickets sold be y.We're given:
[tex]x+y=709[/tex][tex]x=59+y[/tex]Plug the second equation into the first and solve using substitution:
[tex]x+y=709\\59+y+y=709\\59+2y=709\\2y=650\\y=325[/tex]
Therefore, 325 adult tickets were sold.
Answer325 adult tickets were sold.
four friends attended a school play and pay $6.25 per ticket. Each also buys a healthy snack bag sold by the theater club. If the friends spent a total of $37.00, how much did they each healthy snack beg cost, b? write and solve an equation.
Answer:
Since each ticket cost $6.25, then to find the total they spent on tickets you will multiply 6.25 by itself 4 times:
6.25 * 4 = 25
They spent $25 on movie tickets.
You can subtract that from the $37 to find the total they spent on the snacks:
37 - 25 = 12
Th spent $12 in total on movie snacks. Now to find how much they cost each, yo will divide that total by the 4 friends:
12/4 = 3
The movie snacks cost $3 each.
Step-by-step explanation:
Hope it helps! =D
The staff at a company went from 40 to 29 employees. What is the percent decrease in staff
Answer:
27,5%
Step-by-step explanation:
To find the percent decrease, we need to calculate the difference between the original number and the new number and then divide it by the original number and multiply by 100%.
The difference is 40 - 29 = 11.
The percent decrease is (11/40) * 100% = 27.5%
So the percent decrease in staff is 27.5%
Use the vertex ( h, k ) and a point on the graph ( x, y ) to find the standard form of the equation of the quadratic function:
Vertex = (1,-5)
Point = (5,-7)
G( x )= Answer field 1
(x- Answer field 2
)^2 +Answer field 3
The standard form of the equation of the quadratic function is y = -1/8x^2 + 1/4x - 41/8
How to find the standard form of the equation of the quadratic functionFrom the question, we have the following parameters that can be used in our computation:
(h, k) = (1, -5)
(x, y) = (5, -7)
A quadratic function is represented as
y = a(x - h)^2 + k
So, we have
y = a(x - 1)^2 - 5
Given that
(x, y) = (5, -7)
We have
-7 = a(5 - 1)^2 - 5
This gives
16a = -2
So, we have
a = -1/8
Recall that
y = a(x - 1)^2 - 5
So, we have
y = -1/8(x - 1)^2 - 5
Expand
y = -1/8(x^2 - 2x + 1) - 5
This gives
y = -1/8x^2 + 1/4x - 41/8
So, the required equation is y = -1/8x^2 + 1/4x - 41/8
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i need help with this for math class
The expression that shows an equivalent expression include the following:
1/4(14x - 8 + 6x) = 5x - 2.
What is an expression?In Mathematics, an expression is sometimes referred to as an equation and it can be defined as a mathematical equation which is typically used for illustrating the relationship that exist between two (2) or more variables and numerical quantities (number).
Based on the information provided above, we have the following mathematical expression:
1/4(14x - 8 + 6x)
By opening and expanding the bracket, we have the following mathematical expression:
1/4(14x - 8 + 6x) = 1/4(20x - 8)
1/4(20x - 8) = 5x - 2
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The points A B C D and E lie on the circle PAQ is a tangent to the circle at A and EC=EB Angle ECB=80° and angle ABE = 40° Find the values of v w x y and z
The values of v w x y and z are given below:
v= 40°w= 80°x= 40°y= 80°z= 80°How to solve these<EDA= <EBA= 40°
==> x= 40°
This is because the circumferential arc of the same arc is equal.
<PAE= <ADE= 40°
=>v= 40°
This is based on the alternate segment theorem.
Because EC= EB, <ECB= <EBC= 80°
=> w= 80°
This is based on the properties of an isosceles triangle.
<ECB = <EAB = 80°
=> y= 80°
This is because the circumferential angle of the same arc are equal
Because <EBC = <ECB= 80°
=> <BEC = 180° -(80 x2)
= 20°
This is because the sum of the interior angles of the triangle is 180°
<AEB = 180°-y - <ABE
= 60°.
<AEC = <AEB + <BEC= 60° + 20°
=80°.
So <ADC = <AEC = 80°
=> = 80°
This is because the circumferential angle of the same arc are equal
Therefore,
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based on the reference sample, what is the random match probability for the evidence sample at the fga locus?
There is a 0.06% chance that a randomly selected individual from the population would have the same genotype as the evidence sample at the FGA locus.
As a forensic scientist, one of your important tasks is to determine the likelihood that a particular piece of evidence matches a specific individual.
To determine the random match probability for the evidence sample at the FGA locus, you will need to compare it to the reference sample. The reference sample is typically obtained from a suspect or a known individual who is not a suspect in the crime. The reference sample for the FGA locus has a genotype of 16,17.
The random match probability is the probability that a randomly selected individual from the population would have the same genotype at a specific locus as the evidence sample. To calculate this probability, you will need to use the allele frequency of the FGA locus in the population. This frequency is typically obtained from a large database of individuals.
Let's assume that the allele frequency for the FGA locus is 0.03 for the 16 allele and 0.02 for the 17 allele. To calculate the random match probability, you will need to multiply these two frequencies together since the evidence sample has both alleles present. This gives us a probability of 0.0006 or 0.06%.
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Complete Question:
You are a forensic scientist and you are able to obtain the following 3 CODIS STR genotypes from an evidence sample found at a crime scene:
Locus Evidence Genotype
D55818 6,10
FGA 16,17
VWA 11,12
Based on the reference sample, what is the random match probability for the evidence sample at the FGA locus?
robin is twice as old as earl and adam is 8 years younger than earl. in 6 years robin will be three times as old as adam. find their present ages
The present age of Earl is 12 years, Robin is 24 years and Adam is 4 years old.
Let us consider the present age of Earl to be x years.
According to the given question, the present age of Robin is twice that of Earl = 2x
And since it is given that Adam is 8 years younger than Earl, then his age
= x - 8
After 6 years, the age of Earl will be x + 6
Robin's age will be = 2x + 6
Adam's age will be = x - 8 + 6 = x - 2
According to the given question, Robin's age will be thrice the age of Adam.
Hence, 2x + 6 = 3 (x - 2)
⇒ 2x + 6 = 3x - 6 ⇒ 6 + 6 = 3x - 2x ⇒ 12 = x
Thus, the present age of Earl is 12 years,
Robin's age = 2x = 2 x 12 = 24 years
Adam's age = x - 8 = 12 - 8 = 4 years
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