The line through (1, 0, 1) and (4, −4, 4) intersect the plane x + y + z = 6 at point (7,-8,7).
As given,
Equation of the line passes through two points (1, 0, 1) and (4, −4, 4) is:
[tex]\frac{x-4}{4-1}=\frac{y+4}{-4-0}=\frac{z-4}{4-1}[/tex]
From the above equation we have
(x-4)/3 =(y+4)/-4
⇒-4x+16= 3y+12
⇒y=(-4x +4)/3 __(1)
And
(x-4)/3=(z-4)/3
⇒z=x __(2)
Substitute the value of y and z in the plane x +y+ z=6 to get point of intersection of line and plane
x+ [(-4x +4)/3] +x=6
⇒3x-4x+4 +3x =18
⇒2x=14
⇒x=7
Substitute value of x in (1) and (2)
y=-8 and z=7
Therefore, the line through (1, 0, 1) and (4, −4, 4) intersect the plane x + y + z = 6 at point (7,-8,7).
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Suppose that the mean cranial capacity for men is 1160 cc (cubic centimeters) and that the standard deviation is 200 cc. Assuming that men's cranial capacities are normally distributed, complete the following statements.
Solution:
Given;
[tex]\mu=1160,\sigma=200[/tex]The z-score is calculated using;
[tex]\begin{gathered} z=\frac{x-\mu}{\sigma} \\ \\ z=\frac{760-1160}{200}\text{ at }x=760 \\ \\ z=-2 \\ \\ z=\frac{1560-1160}{200}\text{ at }x=1560 \\ \\ z=2 \end{gathered}[/tex]Thus;
[tex]P(-2ANSWER: 95%(b) The z-score of 99.7 probability is between -3 and 3. Thus;
[tex]\begin{gathered} -3=\frac{x_1-1160}{200} \\ \\ x_1=560 \\ \\ 3=\frac{x_2-1,160}{200} \\ \\ x_2=1760 \end{gathered}[/tex]ANSWER: Approximately 99.7% of men have cranial capacities between 560 cc and 1760 cc
The point (-2, 1) is on the graph of which of these functions?
A. y = -x² -1
B. y = -3x -5
C. y = x² + 3
D. Y = 1/2x
Kaj earns $35 for 2 hours of work. If she makes a constant hourly wage, which table
represents the relationship between the number of hours she works and her total
earnings?
The table of values of the relationship between time and earnings is a linear relation
How to determine the table of values that represents the earnings?From the question, we have the following parameters:
Number of hours = 2 hours
Total earnings in this time = $35
Also from the question, we understand that:
She makes a constant hourly wage
A constant hourly wage implies that the table of values has a linear relationship
In this case, the linear relationship is represented as
A(t) = constant hourly wage * t
Where
A(t) represents the earnings
t represents the number of hours
So, we have
constant hourly wage * 2 = 35
Divide both sides of the equation by 2
So, we have
constant hourly wage = 17.5
Substitute constant hourly wage = 17.5 in A(t) = constant hourly wage * t
A(t) = 17.5 * t
Evaluate
A(t) = 17.5t
Using the values of t as:
t = 0, 2, 4, 6
We have the following table of values
Number of hours (t) || Amount earned
0 0
2 35
4 70
6 105
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Can I get help please ?
SOLUTION:
Case: Pythagoras Triple
Method:
The Pythagorean triple:
(8, 15, 17) can be formed with factor integers
8----> 4
15---->3.
Final answer:
x=4, y= 3
HURRY!!!!!!!1Solve the equation −112 = 8x for x. −14 14 −104 120
The solution to the equation, −112 = 8x, is: x = -14.
How to Solve an Equation?To find the value of the variable in an equation, means to solve the equation.
To solve any given equation, we are to apply all necessary properties of equality in other to isolate, as much as possible, the variable of the equation to one side of the equation. Th value of the variable is the solution to the equation.
Given the equation:
-112 = 8x
Divide both sides of the equation by 8:
-112/8 = 8x/8 [division property of equality]
-14 = x
x = -14
Check: Plug in x = -14 into the equation:
-112 = 8(-14)
-112 = -112 [true]
Thus, the solution to -112 = 8x is: x = -14.
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A particle moves along the r-axis so that its velocity vat any given time t, for 0 St $ 16, is given byW(0) =e»-1. At time r=0, the particle is at the origin. At what time does the particle's accelerationequal zero for the first time?Round to the nearest thousandth or write as a fraction
Given: The velocity function of a moving particle as
[tex]V(t)=e^{2sint}-1[/tex]To Determine: The time at which the acceleration equals to zero
Solution
Note that at time t=0, the particle is at origin, so
[tex]\begin{gathered} V(0)=e^{2sin0}-1 \\ V(0)=e^{2\times0}-1 \\ V(0)=e^0-1 \\ V(0)=1-1 \\ V(0)=0 \end{gathered}[/tex]Determine the acceleration function
The acceleration of a particle is the rate of change of velocity or the derivative of the velocity function. Therefore,
[tex]A(t)=\frac{dV(t)}{dt},or,A(t)=V^{\prime}(t)[/tex][tex]\begin{gathered} V(t)=e^{2sint}-1 \\ let:u=2sint:\frac{du}{dt}=2cost \\ V(t)=e^u \\ \frac{dV(t)}{du}=e^u=e^{2sint} \\ A(t)=\frac{dV(t)}{dt}=\frac{dV}{du}\times\frac{du}{dt} \\ A(t)=e^{2sint}\times2cost \\ A(t)=2e^{2sint}cost \end{gathered}[/tex]When the acceleration is equal to zero, then we have
[tex]\begin{gathered} A(t)=0 \\ 2e^{2sint}cost=0 \end{gathered}[/tex]Let us plot the graph of the acceleration function
The time for given interval for which the acceleration is zero are
[tex]t=\frac{\pi}{2},\frac{3\pi}{2},\frac{5\pi}{2},\frac{7\pi}{2},\frac{9\pi}{2}[/tex]ence, thre first time the acceleration is zero is π/2 or 1.571
For a test whose scores are normally distributed, with mean 470 and standard deviation 52, what is the cutoff score separating the bottom 11% of the test scores from the rest (that is, the score so that 11% of all scores are below this score)?
We will employ the z score table in this problem.
The shaded part is our area of interest.We will be required to seek the value of the z score at 0.11.
when we ahave a probability of 0.11 or 11%
This corresponds with a z-score of -1.225.
We then substitute into our z-score equation:
[tex]z=\frac{x-\mu}{\sigma}[/tex]where
[tex]\begin{gathered} z=z\text{ score} \\ x=\text{cut off point} \\ \mu=\operatorname{mean} \\ \sigma=\text{standard deviation} \end{gathered}[/tex]Therefore, we have
[tex]\begin{gathered} x=\sigma z+\mu \\ x=52(-1.225)+470 \\ x=406.3 \end{gathered}[/tex]Consider the lines that contain the segments in the figure and the planes that contain the faces of the figure. All angles are right angles. Which plane(s) contain point B and appear to be parallel to plane CDH?
The plane containing point B and parallel to the plane CDH is plane ABF.
What is defined as the parallel plane?Parallel planes are spatial planes that never intersect. The length about any line segment perpendicular both to planes connecting two parallel planes is indeed the distance between them. There are an infinite number of perpendicular line segments between two parallel planes. Two of the perpendicular segments the above are line segments AB and CD. Any line segment that is perpendicular to both planes also has the shortest distance between them.As, from the diagram we can see that there are two plane passing from point B; plane ABF and ABC.
But plane ABC is intersecting the given plane CDH, while plane ABF is not.
Thus, plane ABF is parallel to the plane CDH.
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Determine the rate of this problem -> A 18-kg bag of cherries for $2.65 =_____per kg
Answer:
$0.14 per kg
Step-by-step explanation:
A 18-kg bag of cherries for $2.65
for 1 kg
[tex] \frac{2.65}{18} = 0.14 \\ [/tex]
so, the answer is $0.14
Does the table show a proportional relationship? If so, what is the value of y when x is 11?
x 4 5 6 10
y 64 125 216 1,000
Help Me Pleaseeeeeee.
Based on the dimensions of the right triangle, the equation to be used to find the missing lengths is hypotenuse² = Known leg² + Unknown leg².
How to find a missing length on a right angled triangle?To find the missing length of a right-angled triangle, you should use Pythagoras theorem.
This theorem allows you to find the dimensions of missing leg as:
hypotenuse² = Known leg² + Unknown leg²
When you solve for the missing length, the length is:
9² = 6² + Unknown leg²
81 = 36 + Unknown leg²
Unknown leg² = 81 - 36
Unknown leg = √(81 - 36)
Unknown leg = 6.7
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Use the definition of the derivative to find the derivative of the function with respect to the given variable.
Show steps
The derivative of the given function [g(r) = -2r + 2] is d/dr (rⁿ) = nrⁿ⁻¹.
What is derivative?The derivative of a function of a real variable in mathematics assesses how sensitively the function's value changes in response to changes in its argument. Calculus's fundamental tool is the derivative. In conclusion, the tangent line's slope, or instantaneous rate of change, at any point on the curve is essentially what the derivative is. When you take a function's derivative, you're left with a different function that gives you the slope of the original function.So, g(r) = -2r + 2:
Differentiate with respect to r as follows:
g(r) = -2r + 2Using Power rule:
d/dr (rⁿ) = nrⁿ⁻¹Therefore, the derivative of the given function is d/dr (rⁿ) = nrⁿ⁻¹.
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A college professor hands out a list of 16 questions, 8 of which will appear on the final examination for the course. One of the students taking the course is pressed for time and can prepare for only 9 of the 16 questions on the list. Suppose the professor chooses the 8 questions at random from the 16. What is the probability that the student will be prepared for exactly 4 questions?
The probability that the student will be prepared for exactly 4 questions is; 0.3427
How to solve Hypergeometric Probability distribution?
Hypergeometric distribution is defined as a discrete probability distribution that expresses the probability of k successes in n draws, done without replacement, from a finite population of size N that contains exactly K objects with that feature. In this disdtribution, each draw is either a success or a failure.
The probability mass function of Hypergeometric distribution is given by the formula;
P(K = k) = KCk * N-KCn-k ]/NCn
Now, the probability that the student will be prepared for exactly 4 questions will be;
P(K = 4) where;
N = 16
K = 9
n = 8
Solving P(K = 4) = 9C4* 16-9C8-4 ]/16C8 = 0.3427
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Tammy has 4 more then five times the amount of dimes than nickels in her pocket. She has total of $1.50 in her pocket. Write an equation that could be used to determine the number of nickels(x) she has in her pocket.
In a case whereby Tammy has 4 more then five times the amount of dimes than nickels in her pocket and have total of $1.50 in her pocket the equation that could be used to determine the number of nickels(x) she has in her pocket is (0.05)(X+3) = 1.50.
How can the number of nickels(x) she has in her pocket been determined?The number of nickels(x) that can be found her pocket be determined by adding the the number of times the amount of dimes is than nickels, which can be expressed as :
let x will be number of dimes
let x+4 will be number of nickels
Therefore the number of nickels(x) that is required will be (0.10)X + (0.05)(X+3) = 1.50
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Where is the least common denominator of two fractions to product of the denominator?
When two or more fractions are provided, the least common denominator is defined as the smallest common multiple of all the common multiples of the denominators.
What is the least common denominator?The smallest number that is a common denominator for a particular set of fractions is referred to as the least common denominator (LCD). For fraction addition and subtraction, as well as comparing two or more fractions, the given fractions must have common denominators.Let's assume we have to add the fractions: (2/9)+(3/4)
We need to determine a common integer that is a multiple of both denominators, which are 9 and 4.
This common multiple will aid in the solution of the problem. As a result, the least frequent multiple for 9 and 4 is 36. As a result, the expression can be written as follows:
(2/9)+(3/4) = (2/9 × 4/4) + (3/4 × 9/9) = (8/36) + (27/36) = 35/36
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Answer the following.
To convert 2.21 x 10⁻⁶, place 6 zeros before 2.21 and move the decimal point to the left:
= 0.000021210
To convert 28,000 to scientific notation, write the non-zero digits, placing a decimal after the first non-zero digit: 2.8, then, multiply by 10 elevated to 4 (number of digits after 2):
28,000 = 2.8 x 10
nswer:
Find the value of x:
Answer:
3
because 3 divided by one is 3 so then you would have to divide with nine which we know is 3
Step-by-step explanation:
Have a great day!
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Match the function with its inverse.
The correct pairs of the functions and their inverses are given by the image at the end of the answer.
How to find the inverse function?To find the inverse function, we exchange x and y in the original function, then isolate y.
The first function that we want to find the inverse is:
f(x) = (2x - 1)/(x + 2).
Hence:
x = (2y - 1)/(y + 2)
(y + 2)x = 2y - 1
xy + 2x = 2y - 1
xy - 2y = -1 - 2x
y(x - 2) = -1 - 2x
y = (-1 - 2x)/(x - 2) (which is the inverse function).
The second function which we want to find the inverse is:
y = (x + 2)/(-2x + 1)
Then:
x = (y + 2)/(-2y + 1)
x(-2y + 1) = y + 2
-2yx + x = y + 2
-2yx - y = 2 - x
-y(2x + 1) = 2 - x
y = (x - 2)/(2x + 1) (which is the inverse function).
The third function which we want to find the inverse is:
y = (x - 1)/(2x + 1)
Then:
x = (y - 1)/(2y + 1)
2yx + x = y - 1
2yx - y = -1 - x
y(2x - 1) = -1 - x
y = (-x - 1)/(2x - 1) (which is the inverse function).
The fourth function which we want to find the inverse is:
y = (2x + 1)/(2x - 1)
Then:
x = (2y + 1)(2y - 1)
2yx - x = 2y + 1
2yx - 2y = 1 + x
2y(x - 1) = (1 + x)
y = (x + 1)/(2(x - 1)) (which is the inverse function).
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Over the last three evenings, Amy received a total of 112 phone calls at the call center. The first evening, she received 7 more calls than the second evening. The third evening, she received 3 times as many calls as the second evening. How many phone calls did she receive each evening?
Based on the relationship between the number of phone calls that Amy received for the three evenings, the number of phone calls received on each evening was:
First evening - 28 calls Second evening - 21 calls Third evening - 63 calls How to find the number of phone calls received?The first evening saw Amy receiving 7 more calls than the second evening while the third evening saw Amy receiving 3 times as many calls as the second evening.
Assuming the second evening is x, the relationship can be represented by the equation:
First evening calls + Second evening calls + Third evening calls = Total number of calls
(7 + x) + x + 3x = 112
Solving for the number of phone calls on the second evening gives:
(7 + x) + x + 3x = 112
7 + x + x + 3x = 112
7 + 5x = 112
5x = 112 - 7
x = 105 /5
= 21 calls
Number of calls on first evening:
= 21 + 7
= 28 calls
Number of calls on third evening:
= 21 x 3
= 63 calls
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Find a function f whose graph is a parabola with the given vertex and that passes through the given point.
vertex (−1, 9); point (−2, −8)
[tex]~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} h=-1\\ k=9 \end{cases}\implies y=a(~~x(-1)~~)^2 +9\implies y=a(x+1)^2 + 9 \\\\\\ \textit{we also know that} \begin{cases} x=-2\\ y=-8 \end{cases}\implies -8=a(-2+1)^2 + 9 \\\\\\ -17=a(-1)^2\implies -17=a\hspace{9em}\boxed{y=-17(x+1)^2 + 9}[/tex]
Determine if the sequence below is arithmetic or geometric and determine
the common difference / ratio in simplest form.
64, 16, 4, ...
The sequence 64, 16, 4,. is geometric
What is an arithmetic sequence?Arithmetic Sequence can simply be defined as a sequence in which the difference between successive or consecutive terms is known as a constant.
The sequence is in the form a, a + d, a + 2d, a + 3d, a + 4d
Where;
a is the first termd is the common difference of the sequenceThe formula for the nth term of an arithmetic sequence is expressed as;
Tn = a + (n – 1)d
What is a geometric sequence?Geometric sequence can simply be defined as a sequence where the ratio of every two consecutive or successive terms is a known constant.
Given the sequence;
64, 16, 4, ...
We can see that the common ratio between the terms is 4 and hence a geometric sequence
Hence, it is a geometric sequence
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Use synthetic division to divide 2x^4 − 12x^3 + 18x^2 − 13x +20 ; x−4.
The result of the synthetic division of 2x^4 - 12x³ + 18x² - 13x + 20 by x - 4 is given by:
2x³ - 4x² + 2x - 5.
How does synthetic division works?In synthetic division, the coefficients of a polynomial are each divided by a value.This value is the zero of the divided polynomial, which goes into the far left box.For this problem, the polynomial is given by:
2x^4 - 12x³ + 18x² - 13x + 20.
Hence the coefficients are:
2, -12, 18, -13, 20.
The divisor is:
x - 4.
Hence the left coefficient is:
4.
From the image at the end of the answer, the resulting coefficients are given as follows:
2, -4, 2, -5, with a remainder of 0.
Hence the result is:
2x³ - 4x² + 2x - 5.
For the procedure, we consider that the coefficient 2, the first of the polynomial, is moved down, then multiplied with 4 and added with the next coefficient(-12), and this procedure happens until the last coefficient.
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What is the value of 8 in 8.260
Answer:
Step-by-step explanation:
The value of 8 in 8.260 is 8 units.
1. A triangle is rotated 90° about the origin. What is true about the relationship between the image and the
pre-image?
(1 point)
The lengths of the sides and the measures of the angles are preserved, so the triangles are congruent.
The lengths of the sides are enlarged and measures of the angles are preserved, so the triangles are similar.
The lengths of the sides change and the measures of the angles change as well, so the triangles look nothing alike.
The lengths of the sides are reduced and measures of the angles are preserved, so one triangle is a reduction of the other.
Answer:
the first answer option : all lengths and angles stay the same.
Step-by-step explanation:
imagine you have a piece of plastic or glass of a triangular shape on your table.
now, lower your hand on the table, so that your thumb touches the table and one of your other fingers touches the triangle on the top.
and now twist your hand that your thumb stays at the same point, and your finger holding the triangle starts making a circular motion.
that finger is dragging the triangle along.
what happens to the triangle ? it keeps its original shape, and changes only its location and orientation.
that is what a rotation is.
#6 and #7 Axioms of Equality
It is proved that ∠2 and ∠3 are supplementary angles.
What are angles?An angle is a figure in Euclidean geometry made up of two rays that share a common endpoint and are referred to as the angle's sides and vertex, respectively. Angles created by two rays are in the plane where the rays are located. The meeting of two planes also creates angles. We refer to these as dihedral angles.So, according to the given image below:
(A) m∠1 = m∠3 ⇒ Alternate angles.
(B) m∠1 + m∠2 = 180°
Reason:
R is a straight line through which line m asses making two angles m∠1 and m∠2.As we know a straight line has an angle of 180°.And since, line m divides the angle of 180° into two parts ∠1 and ∠2.So w ecam conclude that: m1 + m∠2 = 180°.(C) m∠3 + m∠2 = 180° due to: Linear Pair Axiom.
(D) m∠2 and m∠3 are supplementary because: Since a linear pair of angles always results in a straight line, their sum is always 180°.
Therefore, it is proved that ∠2 and ∠3 are supplementary angles.
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Select the correct answer.
How many solutions for x does the following equation have?
2(x+4) -1 = 2x + 7
O A. 1
О в. о
OC. 7
OD. infinite
Answer:
D. infinite
Step-by-step explanation:
2(x+4) -1 = 2x + 7
To solve for x
Distribute
2x+8 -1 = 2x+7
Combine like terms
2x +7 = 2x + 7
Subtract 2x from each side
2x+7-2x = 2x+7-2x
7 = 7
This is always true, so there are infinite solutions
The rooftop of a 5-story building is 50 feet above the ground.
How long does it take the water balloon dropped from the
rooftop to pass by a third-story window at 24 feet?
Using the model h(t) = h, 16², solve the equation
h(t) = 24. (When you reach the step at which you divide
both sides by -16, leave 16 in the denominator rather than
simplifying the fraction because you'll get a rational
denominator when you later use the quotient property.)
With the help of the quotient, we know that the time the water balloon dropped from the rooftop is 1.3sec.
What do we mean by Quotient?In this example, the number divided by (15) is known as the dividend, and the number divided by (3 in this instance) is known as the divisor. The quotient is the outcome of the division.The quotient is the result of dividing two numbers by each other. As in the case of 8 ÷ 4 = 2, when the division produced the number 2, the outcome is the quotient. The dividend is 8 and the divisor is 4. The quotient and divisor are always less than their dividend, as you can see.So, h(t) = 24:
= 50Then, calculate as follows:
h(t) = - 1624 = 50 - 1616 = 50 - 2416 = 26 = 26/16t = √26/16t = 1.3secTherefore, with the help of the quotient, we know that the time the water balloon dropped from the rooftop is 1.3sec.
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1.
find a
a =
21°
explain why using one of these
words: adjacent,
complementary, supplementary,
vertical
explanation goes here
add a pic of your work
(or just type it here)
to show HOW you got your
answer
pic (or typing) goes Hereford
[tex]21+a=90 \implies a=69^{\circ} [/tex]
This is because the angles are complementary.
the equation of the regression line for the data in the table is y = 4.9 - 198 where x represents the height and y is the predicted walking speed
The numerical value of 4.9 in the equation of the regression line
[y = (4.9x - 198)] determines "for every unit change in height, walking speed increases by 4.9 m/min" since, "x" represents the height and "y" is the predicted walking speed.
As per the question statement, the equation of the regression line goes as [y = (4.9x - 198)], where "x" represents the height and "y" is the predicted walking speed.
We are required to determine, what the numerical value of 4.9 expresses in the regression line.
To solve this question, first we need to know about the formula to express the point-slope form of a line, which goes as, [(y - y₁) = m(x - x₁)], where (x₁, y₁) is a point through which the line passes, and "m" is the slope of the line, and compare this standard form to our question mentioned equation, to establish the numerical significance of 4.9.
Now, [y = (4.9x - 198)] can be written as [(y - 0) = 4.9(x - 40.41)], and comparing it to the standard point-slope form of a line, we get (m = 4.9), i.e., the slope of our concerned line of regression is 4.9.
Hence, 4.9 in 4.9x signifies "for every unit change in height, walking speed increases by 4.9 m/min" since, "x" represents the height and "y" is the predicted walking speed.
Equation: In mathematics, an equation is a statement that expresses the relation of equality between two or more separate expressions, by connecting them with the "equal to" sign.To learn more about Equations, click on the link below.
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Answer:
For every 1 inch increase in height, walking speed increases by 4.9 m/min.
Step-by-step explanation:
Just took it, hope this helps.
1/4(n-6)=1/4n-3/2
Hint: undo the fraction
The solution to 1/4(n - 6) = 1/4n - 3/2 is infinite many solutions
How to solve the equation?The equation is given as
1/4(n - 6) = 1/4n - 3/2
Multiply through the fraction equation by 4
So, we have the following equation
4 x 1/4(n - 6) = 4 x 1/4n - 4 x 3/2
Evaluate the products in the equation
So, we have the following equation
n - 6 = n - 6
Evaluate the like terms
0 = 0
The equation cannot be solved further
If the solution to an equation is 0 = 0, then the equation has infinite many solutions
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Answer: infinite many answers
Step-by-step explanation: