Answer:
Answer:
50313.28
Step-by-step explanation:
A = total amount
P = principal or amount of money deposited,
r = annual interest rate
n = number of times compounded per year
t = time in years
For the formula:
A=P(1+r/n)n⋅t
P=$5000 , r=8% , n=1 and t=30 years
Solution:
A= 5000(1+0.08/1) to the power 1.30
= 5000*1.08 to the power 30
= 5000*10.062657
= 50313.28
Why is the second open interval on which the function is decreasing (0, infinity) and not (0, -infinity) if it’s going down? (Photo attached)
Therefore , the solution of the given problem of function comes out to be the function's behavior on that range because it is not specified for negative values of x.
What does the term function actually mean?The midterm exam will include questions on design, geometry, numbers, each division, as well as actual and hypothetical geographic places. A piece of work describes the connections between variable elements that cooperate to produce the same outcome. A utility is a structure made up of numerous unique parts that work together to create unique outcomes for each input.
Here,
Given that the function in the graph you supplied is undefinable for negative values of x, its domain is (0, infinity).
Therefore, referring to the function as declining on the interval is illogical. (0, -infinity).
As we travel from right to left on the interval, we can observe that the function's values are indeed decreasing. (0, infinity).
We refer to this interval as the function's declining one because of this.
On the interval, we could state that the function is decreasing.
(-infinity, 0). However, in this specific instance, we are unable to discuss the function's behavior on that range because it is not specified for negative values of x.
To know more about function visit:
https://brainly.com/question/28193995
#SPJ1
a fourth grade class is hosting a pancake breakfast fundraiser adult tickets are $10 each and children tickets are$6 each the class sells a total of 105 the total amount raised is 870how many adult tickets and how many children tickets were sold
60 adult tickets and 45 children tickets were sold.
How to solve this problemLet's use algebra to solve the problem:
Let x be the number of adult tickets sold.
Let y be the number of children tickets sold.
From the problem, we know that:
x + y = 105 (total tickets sold)
10x + 6y = 870 (total amount raised)
We can solve this system of equations by using elimination:
Multiply the first equation by 6: 6x + 6y = 630
Subtract the second equation from the first: 4x = 240
Solve for x: x = 60
Now we can use x to find y:
x + y = 105
60 + y = 105
y = 45
Therefore, 60 adult tickets and 45 children tickets were sold.
Learn more about algebra here : brainly.com/question/4541471
#SPJ1
component of optimi
1. Jaden wanted to begin a career in marketing. He had his heart set on a marketing program at a
private university. However, the private university did not admit Jaden to the school. After finding
out he was not accepted, Jaden chose to apply to a nearby state school that also had a highly rated
marketing program. Jaden is now a marketing manager.
Answer:
you need to learn yo stuff
Step-by-step explanation:
bye
3. A company developed a promising product and wants to make decisions. Based on the best available information, a decision tree is drawn.
a) Calculate expected value at every node. Show work.
b) What is the optimum decision and expected value?
c) What is the optimum decision and expected value if they are seeking at least $1.2M?
The greatest expected value of 1.2.
a) We multiply the value of each potential outcome by its likelihood, then add the resulting products to determine the expected value at each node.
Beginning with the first node on the right, we have:
"Invest" should return 0.7(2) + 0.3(-2) = 1.2.
Don't invest has an anticipated value of 0.5(0) + 0.5(1.5) = 0.75.
The centre node is next:
"Develop" should be expected to have a value of 0.6(1.2) + 0.4(0.75) = 1.05
"Do not develop" should have a value of 0.4(0) + 0.6(0) = 0.
Lastly, at the node on the left:
Market research should be worth 0.5(1.05) + 0.5(0) = 0.525.
In light of this, the anticipated value at each node is:
Spend: 1.2
1.05 Development
Market research: 0.525
b) Since "Invest" has the highest expected value of 1.2, it is the best course of action.
c) If they are looking for at least $1.2M, "Invest" is still the best course of action because it has the greatest expected value of 1.2, which is already above the desired level.
To know more similar question visit:
https://brainly.com/question/28332791
#SPJ1
How many zeroes (real or imaginary) does f ( x ) = x 2 + x − 2 have?
Answer:
2 real zeros at x = - 2 , x = 1
Step-by-step explanation:
f(x) = x² + x - 2
to find the zeros let f(x) = 0 , that is
x² + x - 2 = 0 ← in standard form
(x + 2)(x - 1) = 0 ← in factored form
equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
x + 1 = 0 ⇒ x = - 1
there are 2 real zeros , x = - 2 and x = 1
ASAP HELP!! Find the value of x.
Answer:
42°
Step-by-step explanation:
2x-6=90 2x=84 x=42
Use the data reflected in the graphs above. Which class, if any, has more variability in their data? A) Class A B) Class B C) Neither D) Both show the same variability.
The answer is D but I'm not 100% sure since I don't see the graph
Traveling 65 miles/1 hr, how many minutes will it take to drive 125 miles ?
It would take approximately 115.38 minutes to drive 125 miles at a rate of 65 miles/hour.
How many minutes will it take to drive 125 miles?Speed is simply referred to as distance traveled per unit time.
Mathematically, Speed = Distance ÷ time.
Given that, the speed or rate is 65 miles/1 hr, how many minutes will it take to drive 125 miles.
First, we need to find the time it takes to travel 125 miles at a rate of 65 miles/hour.
We can use the formula:
Speed = Distance ÷ time.
time = distance / rate
time = 125 miles / 65 miles/hour
time = 25/13 hours
Now we can convert hours to minutes by multiplying by 60:
= 25/13 hours × 60 minutes/hour
= 115.38 minutes
Therefore, the required time is approximately 115.38 minutes.
Learn more about speed, time and distance here: https://brainly.com/question/27571996
#SPJ1
Calculate the mean and median for the data given 8 1 5 8 0 5 8 2 5 5
Answer:
Mean is 5.5 and Median is 6.5
A store sells water bottles in large and small sizes. There are 24
large water bottles and 18 small water bottles on display in the
store. The manager of the store wants there to be 3 large water
bottles on display for every 2 small water bottles. Should the
manager make any changes to the current display? Explain.
Answer:
Yes, the manager should make changes to the current display. There should be 36 large water bottles and 36 small water bottles, which would be a 3:2 ratio. To achieve this, the manager should add 12 more large water bottles to the display.
During a workout Felicia swims 15 laps in a pool where each lap is 50 yards. Then she walks 30 feet to an indoor track where she runs 5 laps around an indoor track that is 600 feet long. How many miles does she swim, walk, and run?
Felicia swims 0.43 miles, walks 0.0057 miles and runs 0.57 miles. The solution has been obtained by using arithmetic operations.
What are arithmetic operations?
The four fundamental operations, often known as "arithmetic operations," are said to adequately describe all real numbers. The mathematical operations following division, multiplication, addition, and subtraction are quotient, product, sum, and difference.
We are given that she swims 15 laps in a pool where each lap is 50 yards.
By using arithmetic operations, we get
Total yards = 15 * 50 = 750 yard
We know that 1 mile = 1760 yards
So,
750 yards = 0.43 miles
She walks 30 feet.
We know that 1 mile = 5280 feet
So,
30 feet = 0.0057 miles
She runs 5 laps around an indoor track that is 600 feet long.
So, total feet she ran = 5 * 600 = 3000 feet
We know that 1 mile = 5280 feet
So,
3000 feet = 0.57 miles
Hence, she swims 0.43 miles, walks 0.0057 miles and runs 0.57 miles.
Learn more about arithmetic operations from the given link
brainly.com/question/30283549
#SPJ1
Evan is going to invest in an account paying an interest rate of 5.4% compounded annually. How much would Evan need to invest, to the nearest dollar, for the value of the account to reach $1,360 in 5 years
On solving the provided question, we can say that - the value of the simple interest will be $ 881.28.
What is interest ?Multiplying the principal by the interest rate, time, and other factors yields simple interest. Simple return equals principle times interest times hours is the marketed formula. It is easiest to compute interest using this formula. A percentage of the principle balance is how interest is most commonly computed. The interest rate on the loan is known as this percentage.
here,
we have
P = 1360;
R = 5.4 ;
T = 12
so, we get,
SI = 1360 X 5.4 X 12 /100
SI =88128/100
= 881.28
Hence, On solving the provided question, we can say that - the value of the simple interest will be $ 881.28.
To know more about simple interest visit:
https://brainly.com/question/25845758
#SPJ9
Which data set has the largest range?
O A. 14, 19, 18, 35, 32, 38, 40
O B. 102, 105, 103, 110
O C. 5, 6, 75
O D. 1, 9, 2, 5, 4, 19, 2, 4, 3
The data set that has the largest range is C. 5, 6, 75, which is calculated as 75 - 5 = 70.
What is the Range of a Data Set?To find the largest range, we need to calculate the difference between the highest and lowest value in each data set and compare them.
A. For 14, 19, 18, 35, 32, 38, 40, we have:
Range = 40 - 14 = 26
B. For 102, 105, 103, 110, we have:
Range = 110 - 102 = 8
C. For 5, 6, 75, we have:
Range = 75 - 5 = 70
D. For 1, 9, 2, 5, 4, 19, 2, 4, 3, we have:
Range = 19 - 1 = 18
Therefore, data set C has the largest range of 70.
Learn more about the range on:
https://brainly.com/question/27206337
#SPJ1
I need help with my iready assignment
The volume of the capsule is [tex]3052.08 mm^3[/tex]
What is volume of the hemisphere ?
The formula for the volume of a hemisphere is [tex]V = (2/3)\pi r^3[/tex], where r is the radius of the hemisphere.
The volume of a hemisphere is half of the volume of a full sphere with the same radius. This is because a sphere can be divided into two hemispheres of equal size. Therefore, we can use this formula to find the volume of a hemisphere:
[tex]V = (1/2) (4/3)\pi r^3[/tex]
Simplifying this expression, we get:
[tex]V = (2/3)\pi r^3[/tex]
So, the volume of a hemisphere is [tex](2/3)\pi r^3[/tex].
According to the question:
To find the volume of a capsule, we need to break it down into two parts: a cylinder and two hemispherical ends.
The formula for the volume of a cylinder is[tex]Vcylinder = \pi r^2h[/tex], where r is the radius of the cylinder and h is its height.
The formula for the volume of a sphere (or hemisphere) is[tex]Vsphere = (4/3)\pi r^3.[/tex]
Since the capsule is made up of two hemispheres and a cylinder, the total volume of the capsule is the sum of the volumes of these three parts:
[tex]Vcapsule = 2Vsphere + Vcylinder[/tex]
First, let's calculate the volume of the cylinder. We are given that the radius is 3mm and the height is 100mm, so we have:
[tex]Vcylinder = \pi r^2h = 3.14 x 3^2 x 100 = 2826 mm^3[/tex]
Next, let's calculate the volume of the hemispheres. Since the capsule has a radius of 3mm, each hemisphere has a radius of 3mm. So, we have:
[tex]Vsphere = (4/3)\pi r^3 = (4/3) ( 3.14) (3^3 )= 113.04 mm^3[/tex]
Finally, we can calculate the total volume of the capsule by adding the volume of the cylinder and the two hemispheres:
[tex]Vcapsule = 2Vsphere + Vcylinder = 2 *113.04 + 2826 = 3052.08 mm^3[/tex]
Therefore, the volume of the capsule is [tex]3052.08 mm^3[/tex].
To know more about volume of hemisphere visit:
https://brainly.com/question/29275358
#SPJ1
Pudge has three times as many apples as Ace, and Ace has twice as many as Christi. How many apples does each
have if Pudge has 12 more than both Ace and Christi together?
Can you work the problem out please? I’m really having a hard time putting it into a formula.
Answer: Ace has 8 apples Christi has 4 and Pudge has 24
Step-by-step explanation:
Ace has 2 twice as much as Christi has, and 4 x 2 is 8. Pudge has 3 times more than Ace has and 8 x 3 is 24. Pudge has 12 more than Christi and Ace combined. 8 + 4 = 12. 12 + 12 = 24. I hope I explained it right.
Find the resistance in a 1238 watt circuit with 120 volt electricity passing through it.
The resistance in the circuit is 11.63 ohms
What is resistance?Resistance is the opposite of the flow of current. It can also be defined as the ratio of square of voltage to the power of a circuit. It is measured in ohms.
The factors that affects the resistance of a conductor are;
1. temperature
2. length of the wire
3. Area of the wire
4. Nature of the wire
power = V²/R
R = V²/P
P = 1238 W
v = 120
R = 120²/1238
R = 14400/1238
R = 11.63 ohms
learn more about resistance from
https://brainly.com/question/17563681
#SPJ1
3^? x ?^4 = 9^20.What is the missing numerator and denominator? i don't have much time left so make it fast plez
The answer to the 1st power mark would be 36 if the 2nd power will be assumed as 3.
What is Power?
How many times a number should be multiplied depends on its power (or exponent).
It appears as a little number above and to the right of the basic number.
So according to the question,
3ˣ x ?⁴ = 9²⁰
3ˣ x 3⁴ = 9²⁰(let 2nd variable be 3)
3ˣ x 3⁴ = 3²⁰(a^m x a^n=a^(m+n))
3⁽ˣ⁺4⁾ = 3²⁰
So if bases equal powers get equal,
X+4=40
X=36
The above problem can only be proceeded as assumption because two variables cannot be obtained through one equation.
To know more about Equations visit:
https://brainly.com/question/28243079
#SPJ1
please help answer this!!
Given m∥n, find the value of x.
(6x+9)° (4x-19)°
Answer:
Since alternative angles are equal then
PLEASE HELP!!
Given ABC shown in the graph below, XYZ is found according to the following combined transformation function.
Look at both photos below to help answer the question.
The coordinates of triangle XYZ are X(-2,-2), Y(2,4), and Z(-4,8).
Describe Transformation?In mathematics, a transformation refers to a change or modification of an object's position, shape, size, or orientation in a coordinate plane or space. Transformations can be described as functions that map the points or vertices of an object to new positions in the plane or space.
Common transformations include:
Translation: a transformation that moves an object without changing its size, shape, or orientation. Translation involves shifting all points of the object by the same distance in the same direction.
Rotation: a transformation that turns an object about a fixed point or axis by a certain angle. Rotation preserves the size and shape of the object, but changes its orientation.
Scaling: a transformation that changes the size of an object by multiplying the coordinates of each point by a fixed factor. Scaling can either enlarge or reduce an object.
Since the transformation function is not provided, I'll assume that D2(ABC) means dilating the triangle ABC with center at the origin and a scale factor of 2.
To find the coordinates of the new triangle XYZ, we can apply the dilation transformation to each vertex of the original triangle:
For vertex A(-1,-1), we multiply its coordinates by the scale factor 2, giving us point X(-2,-2).
For vertex B(1,2), we multiply its coordinates by the scale factor 2, giving us point Y(2,4).
For vertex C(-2,4), we multiply its coordinates by the scale factor 2, giving us point Z(-4,8).
Therefore, the coordinates of triangle XYZ are X(-2,-2), Y(2,4), and Z(-4,8), as shown below:
To know more about triangle visit:
https://brainly.com/question/29196380
#SPJ1
is 180. The sum of the measures of the second and third angles is five times the measure of the first angle. The third angle is 26 more than the second. Let x, y, and z represent the measures of the first, second, and third angles, respectively. Find the measures of the three angles.
Answer:
x is first angle
y is second angle
and z is third angle
Step-by-step explanation:
This question is solved by a system of equations. We have that:x is the first angle.y is the second angle.z is the third angle.Doing this, we get that:The first angle measures 30º.The second angle measures 67º.The third angle measures 83º.The sum of the measures of the angles of a triangle is 180. This means that The sum of the measures of the second and third angles is five times the measure of the first angle.This means that:From this, the first angle can be found:The measure of the first angle is of 30º.The third angle is 16 more than the second.This means that:Since We get that the second angle is:The second angle measures 67º.For the third angle:The third angle measures 83º.
3. AABC has side lengths 15 cm, 20 cm, and 25 cm.
What could be the side lengths of a triangle
similar to AABC?
A. 7 m, 8 m, and 9 m
B. 6 m, 8 m, and 10 m
C. 5 cm, 10 cm, and 15 cm
D. 30 mm, 40 mm, and 55 mm
The side lengths of a triangle similar to AABC are B: 6 m, 8 m, and 10 m fοr triangle ABC.
What is triangle ?There are three straight sides and three angles in a triangle, which is a geοmetric shape. Having three sides, it is a plygοn. In mathematics, science, and engineering, triangles are οne οf the mοst fundamental and fundamental shapes in geοmetry.
The lengths and angles οf a triangle's sides can be used tο categοrise it. Triangles can be categοrised as scalene, isοsceles, οr equilateral based οn the lengths οf their sides. Triangles with equal sides are called equilateral triangles; thοse with twο equal sides are called isοsceles triangles; and triangles with different sides are called scalene triangles.
Accοrding tο the questiοn:
Twο triangles are similar if their cοrrespοnding angles are cοngruent and their cοrrespοnding sides are prοpοrtiοnal. In this case, we knοw that AABC has side lengths οf 15 cm, 20 cm, and 25 cm.
Tο find a triangle that is similar tο AABC, we need tο find anοther set οf side lengths that have the same ratiοs as the side lengths οf AABC. We can dο this by dividing each side length οf AABC by a cοmmοn factοr tο οbtain a set οf new side lengths.
Let's try this with each answer chοice:
A. 7 m, 8 m, and 9 m
We can divide each side length οf AABC by 5 tο οbtain 3, 4, and 5, respectively. Hοwever, 3, 4, and 5 dο nοt match the side lengths given in chοice A. Therefοre, chοice A is nοt cοrrect.
B. 6 m, 8 m, and 10 m
We can divide each side length οf AABC by 5 tο οbtain 3, 4, and 5, respectively. These side lengths match the side lengths given in chοice B, sο chοice B cοuld be the cοrrect answer.
C. 5 cm, 10 cm, and 15 cm
We can divide each side length οf AABC by 5 tο οbtain 3, 4, and 5, respectively. Hοwever, 3, 4, and 5 dο nοt match the side lengths given in chοice C. Therefοre, chοice C is nοt cοrrect.
D. 30 mm, 40 mm, and 55 mm
We can divide each side length οf AABC by 5 tο οbtain 3, 4, and 5, respectively. Hοwever, 3, 4, and 5 dο nοt match the side lengths given in chοice D. Therefοre, chοice D is nοt cοrrect.
Therefοre, the answer is chοice B: 6 m, 8 m, and 10 m.
To know more about triangle visit:
brainly.com/question/14712269
#SPJ1
Find the distance between (3,3) & (5,3)
one integer is selected at random from integers 7 through 27. find the probabilty that the number is even
The probability of selecting an even integer is 1/2 or 0.5.
What exactly is probability?
Probability is a measure of an event's possibility or chance of occurring. It is a number between 0 and 1, with 0 indicating that the occurrence is improbable and 1 indicating that the event is unavoidable. The probability of an event can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. Probability is used in a wide variety of fields, including mathematics, statistics, economics, physics, engineering, and social sciences, to make predictions and informed decisions.
Now,
There are a total of 27 - 7 + 1 = 21 integers between 7 and 27, inclusive. Of these, half are even and half are odd, since consecutive integers alternate between even and odd.
Therefore, the probability of selecting an even integer is 1/2 or 0.5.
To know more about probability visit the link
brainly.com/question/30034780
#SPJ1
PLEASE HELP ME WITH THIS PLEASE!!
Answer:
Step-by-step explanation:
sto p cheating ur too bad
(btw its 1d * 4r pi / 28)
Find an equation of the line described below. Write the equation in slope intercept form( solved for y) when possible through (8,5) and (5,8)
[tex](\stackrel{x_1}{8}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{8}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{8}-\stackrel{y1}{5}}}{\underset{\textit{\large run}} {\underset{x_2}{5}-\underset{x_1}{8}}} \implies \cfrac{ 3 }{ -3 } \implies - 1[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{5}=\stackrel{m}{- 1}(x-\stackrel{x_1}{8}) \\\\\\ y-5=-x+8\implies {\Large \begin{array}{llll} y=-x+13 \end{array}}[/tex]
Write the following absolute value function as a piecewise function.
f(x) = |- x² - 8x - 7|
The absolute value function as a piecewise function f(x) = |- x² - 8x - 7| is
f(x) = { - (x² + 8x + 7) , x ≤ -7 or x ≥ -1
{ x² + 8x + 7 , -7 < x < -1
What is meant by absolute value?
Absolute value is a mathematical function that gives the distance of a number from zero on a number line. It is denoted by two vertical bars enclosing the number and always returns a non-negative value.
What is meant by piecewise function?
A piecewise function is a function that is defined by different expressions or rules on different parts or intervals of its domain. The domain is divided into pieces, and each piece has its own expression or rule.
According to the given information
When x² + 8x + 7 ≥ 0, we have:
f(x) = |-(x² + 8x + 7)| = -(x² + 8x + 7)
When x² + 8x + 7 < 0, we have:
f(x) = |x² + 8x + 7| = x² + 8x + 7
To know more about absolute value visit:
brainly.com/question/1301718
#SPJ1
20 POINTS ANSWER FOR BRAINLIST
Multiply. Final answer needs to be in Standard
Form. Two different methods need to be shown.
You can choose between Area Model, Distributive
Property and FOIL.
(3x − 4)(2x − 1)
Answer:
Method 1: Distributive Property
To multiply (3x - 4) and (2x - 1), we can use the distributive property:
(3x - 4)(2x - 1) = 3x(2x) + 3x(-1) - 4(2x) - 4(-1)
= 6x^2 - 3x - 8x + 4
= 6x^2 - 11x + 4
Therefore, the final answer in standard form is 6x^2 - 11x + 4.
Method 2: FOIL
To multiply (3x - 4) and (2x - 1), we can use the FOIL method:
(3x - 4)(2x - 1) = 3x(2x) + 3x(-1) - 4(2x) - 4(-1)
= 6x^2 - 3x - 8x + 4
= 6x^2 - 11x + 4
Therefore, the final answer in standard form is 6x^2 - 11x + 4.
What is the meaning of "the underlying set"?
The underlying set of a group is the set of elements that are being operated on using the binary operation specified in the definition of the group.
What is a set?A set is a collection of distinct objects, which can be anything from numbers, letters, or even other sets.
According to question:In the context of the definition of a group, the "underlying set" refers to the set of elements that are used to define the group. In other words, it is the set of objects or elements that are being combined or operated on using the binary operation specified in the definition.
For example, if we define a group using the set of integers (G = {...,-2,-1,0,1,2,...}) and the binary operation of addition, then the underlying set of the group is the set of integers. Each element in the set of integers is an element of the group, and the binary operation of addition is used to combine two elements of the to create a new element within the group.Similarly, if we define a group using the set of real numbers greater than zero (G = {x | x > 0}) and the binary operation of multiplication, then the underlying set of the group is the set of positive real numbers. Each element in the set of positive real numbers is an element of the group, and the binary operation of multiplication is used to combine two elements of the to create a new element within the group.
In summary, the underlying set of a group is the set of elements that are being operated on using the binary operation specified in the definition of the group.
To know more about set visit:
https://brainly.com/question/30625698
#SPJ1
What is the percent change from 310 to 155?
Answer: 50% decrease
Step-by-step explanation:
50% of 310 = 155
310-155=155
50% decrease :)
ANSWER: 50% decrease
SOLUTION:
50% of 310 = 155
310-155=155
So in all the answer is.......
50% decrease :)))))
-XOXOXO:)
What is the solution set of √
x + 7 − 1 = x?
Answer:
x = 9
Step-by-step explanation:
Solving radical equations:√x + 7 - 1 = x
√x + 6 = x
Isolate √x,
√x = x - 6
Square both sides,
(√x)² = (x - 6)²
Use identity (a -b)² = a² - 2ab + b²
x = x² - 2*x*6 + 6²
x = x² - 12x + 36
x² - 12x + 36 - x = 0
x² - 13x + 36 = 0
We look for two integers which when added give (-13) and when multiplied gives 36.
So, the factors are (-9) and (-4).
-9 + (-4) = -13 & (-9)*(-4) = 36.
Rewrite the middle term using the factors.
x² - 13x + 36 = x² - 9x - 4x + 36
Take out the common factor 'x' from first and second term & take out the common factor (-4) from third and fourth term.
=x(x -9) -4(x - 9)
= (x -9)(x- 4)
x - 9 = 0 ; x - 4 = 0
x = 9 ; x = 4
But 4 doest not satisfy the equation. So, only 9 is the solution.