Find the volume of the figures
1. The volume of the cylinder is 942 m³.
2. The volume of the cone is 33.16 mm.
3. The volume of the sphere is 33.50 in³.
4. The volume of the cuboid is 672 in³.
What is volume?Volume is defined as how much of a three-dimensional object occupies
a space.
We know the volume of a cylinder is πr²h.
∴ The volume of the given cylinder is = π(5)²×12 m³ = 942 m³.
We know the volume of a cone is = (1/3)πr²h.
∴ The volume of the given cone is = (1/3)π(2)²×8 mm³ = 33.16 mm.
We know the volume of a sphere is (4/3)π×r³.
∴ The volume of the given sphere is = (4/3)×π×(r³) in³ = 33.50 in³.
We know the volume of a cuboid is = (length×width×height).
∴ The volume of the given cuboid is = (7×8×12) in³ = 672 in³.
The volume of the object in figure 8 is the sum of the volume of a cuboid and a pyramid.
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SOLVE FOR R
-7 - 7r= -10r + 8
R =
Answer:
the answer is 5
Step-by-step explanation:
(Add 10r to both sides)
-7-7r+10r= 8
Then -7+3r = 8
(Add 7 to both sides)
3r = 8+7
3r = 15
Divide both sides by 3.
r = 5
B. Hannah approximates the areas of circles using the equation A=3 r², and records areas of circles with different radius lengths in a table.
a. Graph the ordered pairs from the table.
b. Is the relation a function? Explain.
Write out, in paragraph form, a plan for completing the following proof.
For example, will you prove triangles congruent? How? By what theorem?
Given:
AR = AQ
RT = QS
Prove:
∠ RAT = ∠ QAS
Can someone help me understand how to answer this
Because AR = AQ, you have an isosceles triangle with triangle RAQ. This also means ∠ARQ = ∠AQR.
You're also told that RT = QS, so this gives you SAS to show triangle ART = triangle AQS.
side: AR = AQ
angle: ∠ART = ∠AQS
side: TR = QS
Knowing that the two triangles are congruent gives you that the two top angles are also congruent.
At the city museum, child admission is 5.70 and adult admission is 9.80. On Friday, 114 tickets were sold for a total sales of 912.20. How many adult tickets were sold that day?
According to the given information The 50 child tickets and 64 adult tickets were sold that day.
What exactly is arithmetic?The area of mathematics concerned with the characteristics and use of numbers a field of study that concentrates on multiplying, dividing, adding, and subtracting numbers. Mathematical simplifications are made using fractions, decimals, percentages, fractions, square roots, exponents, and other arithmetic operations.
Briefing:child admission (c)= $5.70
adult admission (a)= $9.80
5.70c + 9.80a = 912.20 (i)
a + c = 114 (ii)
Set up the equation:
5.70(114 - a) + 9.80a = 912.20
649.8 - 5.7a + 9.80a = 912.20
4.1a = 262.4
a = 64
adult tickets = 64
Put the value of a in equation (ii) we get,
64 + c = 114
c = 114 - 64
c = 50
child tickets = 50
Therefore , the 50 child tickets and 64 adult tickets were sold that day.
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In December, Mr. Dillon opened a checking account and made deposits of $1530, $896, $571, and $472. He also wrote checks for $32, $918, $825, $661, and $224. What was his balance at the end of the month?
Mr. Dillon balance at the end of month is $809.
What is checking account?In a financial institution, a checking account is a deposit account that permits both deposits and withdrawals.
What is deposit?Money kept or held in any bank account is referred to as a deposit.
What is withdrawal?A withdrawal entails taking money out of a trust, pension, savings plan, or bank account.
As Mr. Dillon opened a checking account, so balance is $0 in starting.
When he deposits $1530, $896, $571, $472
Total deposit= $1530+$896+$571+$472
= $ 3,469
Check is a kind of withdrawal.
He wrote check of $32 , $981 , $825 , $661 , $224
Total withdrawal= $32+$981,$825+$661+$224
= $2,660
Balance= Total deposit - Total withdrawal
= $3,469 - $2,660
= $809
Therefore, balance is $ 809.
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write down in trems of n an expression for the nth term in the following sequences 1 8 15 22 29
The expression which defines the nth term of the given sequence, in terms of n as required in the task content is; T (n) = 1 + 7(n - 1).
Which expression represents the nth term of the expression in terms of n?It follows from the task content that the expression which represents the nth term of the given sequence be determined.
According to the task content, the first term, a of the sequence is; 1.
Also, since; 8 - 1 = 15 - 8 = 22 - 15 = 29 - 22 = Common difference, d = 7.
Consequently, the required expression is an arithmetic sequence which can be modelled by;
T (n) = a + d (n - 1)
Since the constant common difference of consecutive terms in the sequence is; 7,
Ultimately, The required expression for the nth term of the expression is;
nth = 1 + 7(n -1)
On this note, the nth term of the arithmetic sequence is given by the expression; T (n) = 1 + 7 (n -1).
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On a team, 3 girls and 2 boys scored a total of 41 points. The difference between the number of points scored by the 3 girls and the number of points scored by the 2 boys is 13. Each girl scored the same number of points and each boy scored the same number of points. Find the number of points scored by each girl and each boy.
Answer:
each girl scored 9 points
each boy scored 7 points
Step-by-step explanation:
41-13=28
28/2=14
14 is the number scored by boys
14/2
one boy scored 7 points
14+13=27
27 is the number scored by girls
27/3=9
each girl scored 9 points
A plane flying horizontally at an altitude of 2 km and a speed of 600 km/h passes directly over a radar station. Find the rate (in km/h) at which the distance from the plane to the station is increasing when it is 3 km away from the station. (Round your answer to the nearest whole number.)
Answer:
When the plane is 2mi away from the radar station, its distance's increase rate is approximately 433mi/h.
Step-by-step explanation:
Sketch a right triangle with one leg going vertically a length of 3 miles above the station, and the other leg x going horizontally from the top of the first leg. Distance r from plane to station is related by r2 = x2 + 32. Differentiate: 2r dr/dt = 2x dx/dt, which rearranges to the desired dr/dt = x/r dx/dt. When r = 4, x2 = 42 - 9 and x = √7. So dr/dt = (√7 / 4) * 520 mph = 344 mph.
{y:y is an integer AND Y>10
{y:y is an integer AND y>10} is a set of integers that are greater than 10. Some examples of elements that would be included in this set are 11, 12, 13, 14, and so on.
What is the sampling method that involves taking a random selection of people from a defined population?.
A sampling method is simple random sampling.
What is sampling method?In statistical analysis, sampling is the procedure by which researchers choose a specific number of observations from a larger population. The sample strategy will depend on the sort of study being done, although it may involve systematic sampling or just plain random sampling.
A selection of participants from a population are chosen at random by the researcher using simple random sampling, a sort of probability sampling. Every person in the population has the same probability of getting chosen. Then, data are gathered from as much of this randomly selected subgroup as feasible.
Since it only uses one random pick and is very simple, this method is the easiest of all the probability sampling techniques.
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Maria is going to purchase cranberry juice and lemon-lime soda for a new fruit punch recipe. The recipe calls for 3.5 times as many bottles of lemon-lime soda as cranberry juice. If she has $17.40, what is the most bottles of cranberry juice she can buy if cranberry juice costs $3.80 per bottle and lemon-lime soda costs $1.40 per bottle?
Answer:
Maria can buy at most 2 bottles of cranberry juice and 7 lemon-lime soda bottles.
Step-by-step explanation:
Setting up the SolutionFor this problem, we can set up an algebraic expression to represent the price, and this will help us solve the problem.
So firstly, let's assign the number of cranberry juice bottles to the variable "C". We could technically represent this as the variable name "cranberry juice bottles", but "C" is a bit more easier to write when writing an algebraic expression while still making it easy to distinguish. Let's also assign the number of lemon-lime soda to the variable "L".
Now let's find a way to express the price of each. The price of buying a certain amount of items, can generally be expressed as: [tex](\text{items bought})*(\text{item price})[/tex], since you have to pay the item price for each item bought, also known as, multiplication.
Since we know that the price of a cranberry juice bottle is $3.80 then that means the total amount used towards cranberry juice can be expressed as: [tex]3.80C[/tex]. We're just multiplying the number of cranberry juice bottles times the price. Likewise, we can represent the total amount used towards lemon-lime soda as: [tex]1.40L[/tex]. The same logic is being applied here.
Now if we add both of these, we get the total amount that will be spent which is: [tex]3.80C + 1.40L = T[/tex], and in this case I just set it equal to "T" which just represents the total spent.
Now there's two more things to do. Generally we can't really solve two-variable equations and we want to express one variable in terms of the other, so that we can rewrite the equation as a one-variable equation.
There is one piece of information given that allows us to do this. "The recipe calls for 3.5 times as many bottles of lemon-lime soda as cranberry". So we can represent the numbers of lemon-lime soda bottles as 3.5 times the amount of cranberry juice bottles. We can express it as: [tex]L=3.5C[/tex]
So now let's plug this into the equation, instead of "L". This gives us: [tex]3.80C + 1.40(3.5C) = T[/tex]
let's multiply the 1.40 by the 3
[tex]3.80C + 4.9C= T[/tex]
now let's add up the values.
[tex]8.7C=T[/tex]
Now lastly, this represents the total amount that is going to be spent. Since Maria only has $17.40, we want this total to be less than or equal to 17.40 (assuming there is no sales tax, but this was never given). this gives us our final expression we will be using: [tex]8.7C\le 17.40[/tex]
Solving the ProblemFrom here solving the problem is actually pretty easy. Think of the inequality as a linear equation, we can still apply the same (for the most part) algebraic manipulations we apply to linear equations. We just divide both sides by 8.7 to isolate the C
[tex]\frac{8.7C}{8.7}\le\frac{17.40}{8.7}\\\\C\le 2[/tex]
So Maria can buy a maximum of 2 bottles of cranberry juice. From this we can actually determine the number of lemon-lime soda bottles.
So we know that:
[tex]C=2[/tex]
From this we can determine what L is, since remember the equation we set up earlier?
[tex]L = 3.5C[/tex]
Let's just plug C into the equation, and we get:
[tex]L=3.5(2)[/tex]
Multiply
[tex]L=7[/tex]
So Maria can buy at most 2 bottles of cranberry juice and 7 lemon-lime soda bottles.
every answer i have put is wrong can someone help
The mathematical model that gives the stopping distance d in terms of speed v is
d = 1/(40 x 5280²) v²
The stopping distance when v is 59 miles per hour is 87.03 feet.
What is speed?Speed is the ratio of distance and time.
It shows how fast an object is moving at a given time.
We have,
The stopping distance d is directly proportional to the square of the speed v.
This can be written as,
d ∝ v²
Now,
Converting 40 miles into feet.
1 mile = 5280 feet
40 miles = 40 x 5280 feet
40 miles = 211200 feet
Now,
40 feet ∝ 211200 feet per
Now,
The stopping distance is 40 feet when the speed is 40 miles per hour
d = 40 and v = (40 x 5280) feet per hour
d = k v²
k = d/v²
k = 40/(40 x 5280)²
k = 1/(40 x 5280²)
The mathematical model that gives the stopping distance d in terms of speed v is
d = 1/(40 x 5280²) v²
The stopping distance when v is 59 miles per hour
v = (59 x 5280) feet per hour
d = 1/(40 x 5280²) x (59 x 5280)²
d = (59 x 59) / 40
d = 87.03 feet
Thus,
The mathematical model that gives the stopping distance d in terms of speed v is
d = 1/(40 x 5280²) v²
The stopping distance when v is 59 miles per hour is 87.03 feet.
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help meeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
2.0 acres
Step-by-step explanation:
C(x) = 270 ln(x+1) + 1900 = 2200
270 ln(x+1) = 300
ln(x+1) = 10/9
x+1 = e^(10/9)
x = e^(10/9) - 1 = 2.0377
Answer Questions 9 to 11 using the lines shown in the coordinate grid below.
1. Is it true that m parallel to n?Include any relevant measurements and calculations.
2. Is it true that m is congruent to p?include relevant measurements and calculations.
3.Is it true that n is congruent to p? Include any relevant measurements and calculations.
The solution to the parallel lines identification and congruency are;
1) They are not parallel.
2) They are not congruent.
3) They are not congruent.
How to Identify Parallel lines?
Parallel lines are defined as lines in a plane that are always the same distance apart. Parallel lines never intersect.
1) Looking at lines m and n , for them to be parallel, it means that they must be the same width all through. However, we see that along the x-axis they are 6 units while going further down, it is not always 6 units as some are 5.5 units. Thus, they are not parallel.
2) No, m is not congruent to p because it is not the same distance from the x and y-axis at similar points.
3) No, n cannot be congruent to p because we see that the distance between the marked points are not congruent.
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“24 hours per day” translate the algebraic expression
Answer:
24*X or 24X
Step-by-step explanation:
24X or 24*X or 24 multiplied by X days
The variable "X" represents the number of days.
Is ( − 3, 2) a solution of 7 x + 9 y > − 3
Answer:
No
Step-by-step explanation:
x > -9y-3/7 (Solve for X)
_____________________________________________________
y > -7x/9 - 1/3 (Solve for Y)
_____________________________________________________
Therefore, (-3, 2) is not a solution.
if 2x - 4y = 0 is written as a directly proportional function, where y is a function of x, then what is k?
a. 2
b. 1/2
c. 4
d. 1
Answer:
b
Step-by-step explanation:
4y = 2x
y = 2/4 x
y = 1/2 x where y = kx then k = 1/2
Brielle uses 2/3 cup of nuts for every 2 cups of oatmeal to make granola bars. What fraction of a cup of nuts does Brielle use for 1 cup of oatmeal?
Brielle uses 1/3 of a cup of nuts for 1 cup of oatmeal.
What is unitary method?
The unitary method is a process of finding the value of a single unit, and based on this value finding the required solution.
According to the given question:
Brielle uses 2/3 cup of nuts for every 2 cups of oatmeal to make granola bars.
To find the fraction cup of nuts required for 1 cup of oatmeal, using unitary method
2 cups ----- 2/3 cup of nuts
1 cup ------- [tex]\frac{2/3}{2}[/tex] cup of nuts = 1/3 cup of nuts
Therefore Brielle uses 1/3 of a cup of nuts for 1 cup of oatmeal.
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An ounce of gold costs $1310 and an ounce of silver costs $20. Find all possible weights of
silver and gold that make an alloy (combination of metals) that costs less than $900.
s = number of ounces of silver
g = number of ounces of gold
Find the inequality for this question
By using linear inequation it can be calculated that-
The shaded region right of the y axis and above the x axis gives all possible solution.
The required linear inequation is
1310g + 20s < 900
What is linear inequation?
Inequation shows the comparision between two algebraic expressions by connecting the two algebraic expressions by >, <, ≥, ≤
A one degree inequation is known as linear inequation
Let the alloy has g ounces of gold and s ounces of silver
An ounce of gold costs $1310 and an ounce of silver costs $20.
Cost of the alloy should be less than $900
The required linear inequation is
1310g + 20s < 900
The graph has been attached
The shaded region right of the y axis and above the x axis gives all possible solution.
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In triangle WXY, the measure of W is 10 less than the measure of X and the measure of Y is 14 less than the measure of X. Find the measure of each angle
X = 63°
W = 60°
Y = 57° are the measure of each angle in triangle.
In math, what is a triangle?
A triangle is a 3-sided polygon that is occasionally (though not frequently) referred to as the trigon. There are three sides and three angles in every triangle, some of which may be the same.
W = X - 10
Y = X - 14
X + W + Y = 180 substitute
X + (X - 10) + ( X - 14)
= 3 X - 24 = 180
3X = 180 + 24.
X = 204/3
X = 68
W = 58
Y = 54
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Triangle ABC is drawn with AB = 36 units, BC = 42 units, and ZBCA = 31°. The measure of ZABC is
The value of [tex]\angle[/tex]ABC=6° was found with the help of the law of cosines.
What is the law of cosines of a triangle?
The lengths of a triangle's sides are correlated with the cosine of one of its angles according to the law of cosines. We can now determine values for distances and angles that are impossible to measure without the aid of trigonometry. When calculating the third side of a triangle given two sides and their enclosed angle, as well as when calculating the angles of a triangle if we know all three sides, the law of cosines is used.
Given values are AB = c = 36 units, BC = a = 42 units, and [tex]\angle[/tex]BCA = 31°.
Now let AB = b, we find b using the law of cosines and quadratic equation:
[tex]c^2 = a^2 + b^2 - 2a b \cos C \\36^2 = 42^2 + b^2 - 2 \cdot \ 42 \cdot \ b \cdot \ \cos 31\degree \\ b > 0 \\ b = 7.22[/tex]
Now, we calculate [tex]\angle[/tex]ABC using the law of cosines:
[tex]\angle ABC=arc cos(\frac{a^{2}+c^{2}-b^{2} }{2ac}) \\\angle ABC=arc cos(\frac{42^{2}+36^{2}-7.22^{2} }{2.42.36}) \\\angle ABC=5.55[/tex]
[tex]\angle[/tex]ABC=6°
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Write and graph the inverse of y=-x²+5
Write the inverse of y=-x²+5
y=
Answer:
Below
Step-by-step explanation:
y = - x^2 + 5 solve for x
y-5 = - x^2
x^2 = 5-y
x = ± sqrt (5-y) now switch the x's and y's
y = ± sqrt(5-x)
Here is a picture:
A parking garage bases its prices on the number of hours that a vehicle parks in the garage.
The first two hours cost $2 per hour, between two hours and six hours cost $2 per hour, and all hours after that cost $1.
b
The first two hours cost $2 per hour, between two and four hours cost $1 per hour, and all hours after that cost $0.50.
c
The first two hours cost $4, between two hours and six hours cost $2 per hour, and all hours after that cost $1.
d
The first two hours cost $4, between two hours and six hours cost $1 per hour, and all hours after that cost $0.50.
Answer:
c The first two hours cost $4, between two hours and six hours cost $2 per hour, and all hours after that cost $1.
Step-by-step explanation:
You want an interpretation of the graph that is a constant 4 up to x=2, has a slope of 2 for 2 ≤ x < 6, and a slope of 1 for x ≥ 6. The vertical axis is labeled dollars, and the horizontal axis is labeled hours.
Graph interpretationThe constant value of y = 4 for x < 2 means the cost of parking is $4 for the first two hours.
The slope of 2 from x=2 to x=6 means the cost of parking is $2 per hour between 2 and 6 hours.
The slope of 2 for x ≥ 6 means the cost of parking is $1 per hour for more than 6 hours.
The description of c applies.
__
Additional comment
The slope, or "unit rate", is the ratio of "rise" to "run". It can be simpler to choose a "run" of 1 and look at the corresponding "rise".
From x=2 to x=3, the cost rises from $4 to $6, a rise of 2 for the run of 1. That is why we say the slope is 2, or the "unit rate" in dollars per hour is $2 per hour.
Max baked 5 pies for the bake sale. He cut each pie into 8 equal slices. In the first 30 mins of the bake sale, Max sold 19 slices of pie. How many pies did max sell in that time? Give your answer in 2 ways
Answer: He sold 19/40 of his pies or 0.475% of his pies
Step-by-step explanation: There are 40 total slices of pie and if he sold 19, then the fraction is 19/40. Additionally the fraction 19/40 as a decimal is 0.475 so it would be 0.475% of the pies.
Please help! I really don't understand this, and if I could get the answer along with a really simple way to solve next questions like this it would be rlly helpful !!!!!!!
A fruit company packages its fruit into two types of boxes: large and small. This morning, the company made two deliveries. The table below shows the number of boxes in each delivery and the total weight (in kilograms).
1st delivery 2nd delivery
number of large boxes 3 9
number of small boxes 5 7
total weight (in kilograms) 116 238
Let x be the weight (in kilograms) of each large box.
Let y be the weight (in kilograms) of each small box.
(a) Write a system of equations that could be used to find the weight (in kilograms) of each type of box.
[ ]x + [ ]y = [ ]
[ ]x + [ ]y = [ ]
(b) How much does each type of box weigh (in kilograms)?
Weight of each large box: [ ] kilograms
Weight of each small box: [ ] kilograms
I know how to solve part a of the problem, at least. But part b is so difficult for me to understand, and I don't get it at all.
(a) The system of equations that could be used to find the weight (in kilograms) of each type of box is
3x + 5y = 116
9x + 7y = 238
(b)
Weight of each large box: 15.75 kilograms
Weight of each small box: 13.75 kilograms
What is a system of equations?
A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, often known as a system of equations or an equation system.
Given that, the weight of 3 large boxes and 5 small boxes is 116 kilograms.
The weight of 9 large boxes and 7 small boxes is 238 kilograms.
Let x be the weight (in kilograms) of each large box.
Then the weight of 3 large boxes is 3x kilograms.
Then the weight of 9 large boxes is 9x kilograms.
Let y be the weight (in kilograms) of each small box.
Then the weight of 5 large boxes is 5y kilograms.
Then the weight of 7 large boxes is 7y kilograms.
The weight of 3 large boxes and 5 small boxes is 3x + 5y kilograms.
The weight of 9 large boxes and 7 small boxes is 9x + 7y kilograms.
Therefore,
3x + 5y = 116 .....(i)
9x + 7y = 238 .....(ii)
Solve equation by using elimination method:
Multiplying equation(i) by 3 and subtract equation (ii) from it:
9x + 15y = 348
9x + 7y = 238
(-) (-) (-)
_____________
8y = 110
y = 13.75
Putting y = 13.75 in equation (i)
3x + 5×(13.75) = 116
3x = 47.25
x = 15.75
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Need help with this 2
Need help with this problem
The equation of inequality for the given graph will be;
⇒ y < - 4/3x + 5
What is Equation of line?
The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The graph is shown in figure.
Now,
Take two points on the graph as;
⇒ (0, 5) and (3, 1)
Hence, The equation of line will be;
⇒ y - 5 = (1 - 5) / (3 - 0) (x - 0)
⇒ y - 5 = - 4/3x
⇒ y = - 4/3x + 5
Since, The inequality is shown in figure.
Hence, We get;
⇒ y < - 4/3x + 5
Thus, The equation of inequality for the given graph will be;
⇒ y < - 4/3x + 5
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Use the number line to represent the solution to x + 3 > 5. Select the ray. Move the point on the ray to the correct place on the number line.
Hence, the point on the ray is [tex]x > 2[/tex].
What is the number line?
A number line is a visual representation of numbers on a straight line. This line is used to compare numbers that are placed at equal intervals on an infinite line that extends on both sides
Here given that,
Use the number line to represent the solution to [tex]x + 3 > 5.[/tex]
i.e.,
[tex]x+3 > 5\\\\x > 5-3\\\\x > 2[/tex]
Hence, the point on the ray is [tex]x > 2[/tex].
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Need answer asap don’t know
The length of the JU would be 60 units.
What is the Basic Proportionality Theorem?
The basic Proportionality Theorem (can be abbreviated as BPT) states that, if a line is parallel to a side of a triangle that intersects the other sides into two distinct points, then the line divides those sides in proportion.
In the given figure side TU is parallel to side LK
If JK = 64 and JU = -4 + 4x
then UK = JK - JU
= 64 - (-4 + 4x)
=68 - 4x
Similarly,if JL = 72 and JT = 27
then TL = JL - JT
= 72 - 27
= 45
Now by using the property of the basic proportionality theorem, we can write
[tex]\frac{JT}{TL} =\frac{JU}{UK}\\\\ \frac{27}{45} =\frac{-4+4x}{68 - 4x}\\\\\frac{3}{5} = \frac{-4+4x}{68 - 4x}\\\\3(68-4x) = 5(-4+4x)\\\\204 - 12x=-20+2x\\\\204+20=14x\\\\x=\frac{224}{14}\\\\x=16[/tex]
Now we can calculate the length of JU = -4 + 4x
= -4 + 4(16)
= -4 + 64 = 60
Hence, the length of the JU would be 60 units.
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