The point (-2, 7) is not on the graph of y = -2x + 1
How to determine if the point is on the graph?From the question, we have the following equation
y = -2x + 1
This equation represents the equation of the graph
Also, we have the following points
(-2, 7)
This point implies that
(x, y) = (-2, 7)
Substitute (x, y) = (-2, 7) in the equation y = -2x + 1
So, we have
7 = -2 x -2 + 1
Evaluate
7 = 5
This is false
Hence, the point is not on the graph
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A farmer has 20 boxes of eggs
there are 6 eggs in each box
write as a ratio, the number of eggs in two boxes to the total number of eggs
Give your answer in its simplest form
Answer:
1 : 10 is the answer.
Step-by-step explanation:
Total number of eggs in 2 boxes = 6 x 2 = 12
Total number of eggs in 20 boxes = 120
12 : 120
1 : 10
Answer:
1:6
Step-by-step explanation:
4. Round the number 39,944 to the nearest hundred.
Answer:
39.94
Step-by-step explanation:
Ask? :)
Answer:40,000 porque dice que redondees a la centecima mas cercana
which OF THE Following have infinitely many solutions? Choose all answers that apply, A -76x+76=-76x+76 B 76x+76=76x+76 C76x+76=-76x+76 D -76x+76=76x+76. please really need help
The equation which has infinitely many solutions from the given answer choices is; Choice A: -76x+76=-76x+76 and Choice B: 76x + 76 = 76x + 76.
Equations with infinitely many solutions.It follows from the task content the the equation with infinitely many solutions among the given answer choices is to be determined.
An equation of the type; a(1)x + b(1) = a(2)x + b(2) is said to have infinitely many solutions if; a(1) = a(2) and b(1) = b(2).
Hence, the equations which have infinitely many solutions among the given answer choices are; Choice A: -76x+76=-76x+76 and Choice B: 76x + 76 = 76x + 76.
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If the sum of the first 3n positive integers is 150 more than the sum of the first n positive integers, then what is the sum of the first 4n positive integers?
Answer: 300
Step-by-step explanation:
[tex]\sum^{3n}_{k=1} k=\frac{3n(3n+1)}{2}\\\\\sum^{n}_{k=1} k=\frac{n(n+1)}{2}\\\\\therefore \frac{3n(3n+1)}{2}-150=\frac{n(n+1)}{2}\\\\3n(3n+1)-300=n(n+1)\\\\9n^2 +3n-300=n^2 +n\\\\8n^2 +2n-300=0\\\\4n^2 +n-150=0\\\\(n-6)(4n+25)=0\\\\n > 0 \implies n=6\\\\\therefore 4n=24\\\\\implies \sum^{4n}_{k=1} k=\sum^{24}_{k=1} k=\frac{24(25)}{2}=300[/tex]
Which conversion factors are used to multiply to 12 m/s to get kilometers per minute?
Select each correct answer.
1min60 s
1 min over 60 s
60 s1 min
60 s over 1 min
1000 m1 km
1000 m over 1 km
1 km1000 m
PLEASE HELP
To convert 12 m/s to get a kilometer per minute, we will need to multiply 12m/s by 1000 km/60 m.
1000 m over 1km 1 min over 60 sWhat are Unit Conversion and Conversion Factors?Unit conversion is the expression of the same function in a new unit of measurement. Time, for example, can be stated in minutes rather than hours, and distance can be translated from miles to kilometers/feet, or another length measurement. A conversion factor is a numerical equation that allows for the equal conversion of feet to another dimensional analysis unit.
A conversion factor is a number that is used to multiply or divide one set of units into another. When converting to an equivalent value, the proper conversion factor must be utilized. For example, to translate inches to feet, the correct conversion value is 12 inches equals 1 foot. The converting value for minutes to hours is 60 minutes equals 1 hour.
From the information given:
To convert 12 m/s to get a kilometer per minute, we will need to multiply 12m/s by 1000 km/60 m.
The conversion factors are:
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When f(x) equals X -7/2, what is the value of (F•F^-1) (3)
The value of [tex]f.f^{-1}(x)[/tex] is 3 from the given function.
The given function is f(x)=x-7/2.
What is the function?Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
The inverse of the given function is
y=x-7/2
Replace y with x and x with y, we get
x=y-7/2
y=x+7/2
[tex]f^{-1}(x)[/tex]=x+7/2
When x=3
[tex]f^{-1}(3)=3+7/2[/tex]
=6.5
f(6.5)=6.5-7/2
=6.5-3.5
=3
Therefore, the value of [tex]f.f^{-1}(x)[/tex] is 3 from the given function.
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Which equation show the relationship between the number of
hours, x, and the number of dogs groomed, y?
y = 15x
y = 5x
y = 30x
y=3x
The relation that can be formed by obersving the Cartesian Plane is y = 5x
What is Co-ordinate Geometry?
The study of geometry using coordinate points is known as coordinate geometry (or analytic geometry). It is possible to estimate the distance between two points, divide lines in a m:n ratio, identify the midpoint of a line, calculate the area of a triangle in the Cartesian plane, and so on using coordinate geometry.
Solution:
By analysing the given Cartesian Plane
it can be observed that the rate of change of y with respect to x
is 5 times
Therefore, the relation that can be formed by obersving the Cartesian Plane is y = 5x
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Each year, the Department of Water Works measures the chloride concentration level in the water. The first year, they found the chloride concentration changed by −1.6 mg/L−1.6 mg/L . It is estimated that the chloride concentration will change −2.2 mg/L−2.2 mg/L the next year. What is the total change that will likely occur in 2 years? Enter your answer in the box.
Answer:
L
Step-by-step explanation:
-2(4 + 3y) = -2(4 + y)
Answer:
Step-by-step explanation:
-8-6y=-8-2y
+2y +2y
-8-4y=-8
+8 +8
-4y=0
Y=0
which answer is an example of volunteer sampling? responses asking every fifth person their age asking every fifth person their age counting everyone who attends a game counting everyone who attends a game submitting an online survey submitting an online survey asking your neighbors if they approve of the mayor
Submitting an online survey is one example of volunteer sampling.
What exactly does volunteer sampling imply?When researchers look for volunteers to participate in studies, they use voluntary sampling. Volunteers can be recruited in person, online, through public postings, and through a variety of other means. When using voluntary sampling, a researcher usually makes little effort to control the sample composition.
The customer satisfaction survey is a common form of voluntary sampling. When a company provides a service or a product, it frequently asks customers to rate their satisfaction. The sample is voluntary and biased because the company asks all customers to volunteer their opinions.
Researchers in academia frequently seek volunteer samples by asking students to participate in research or by looking for people in the community. Volunteer samples are used for a variety of different types of research because they are inexpensive.
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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. On a number line, point D is at -3, and point E is at 6. The point F lies on segment DE . The ratio of DF to FE is 2 : 3. Where does point F lie on the number line? Point F is at on the number line.
Using the section formula, point F lie on 3/5 in the number line.
In the given question,
On a number line, point D is at -3, and point E is at 6.
The point F lies on segment DE .
The ratio of DF to FE is 2 : 3.
We have to find where point F lie on the number line.
Since point D lies is at -3 at x axis so the point should be ( -3,0).
Point E lies is at 6 at x axis so the point should be ( 6,0).
F lies on segment DE. So let the point of F is (X, Y)
The ratio is 2:3.
Now firstly finding the value of X using section formula
X = [tex]\frac{mx_{2}+nx_{1}}{m+n}[/tex]
where [tex]x_{1}[/tex]= -3, [tex]x_{2}[/tex]= 6, m= 2 and n=3
Now putting the value
X = {2×6+(-3)3}/(2+3)
Simplifying
X = (12-9)/5
X = 3/5
Now firstly finding the value of Y using section formula
Y = [tex]\frac{my_{2}+ny_{1}}{m+n}[/tex]
where [tex]y_{1}[/tex]= 0, [tex]y_{2}[/tex]= 0, m= 2 and n=3
Now putting the value
Y = (2×0+3×0}/(2+3)
Y = 0/5
Y = 0
Hence, point F lie on 3/5 in the number line.
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Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options. The radius of the circle is 3 units. The center of the circle lies on the x-axis. The center of the circle lies on the y-axis. The standard form of the equation is (x – 1)² + y² = 3. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
Considering a circle whose equation is x² + y² – 2x – 8 = 0. The statements that are true about it is as follows
The radius of the circle is 3 unitsThe center of the circle lies on the y-axisThe standard form of the equation is (x – 1)² + y² = 3How to determine the equation the circleInformation given in the question
a circle whose equation is x² + y² – 2x – 8 = 0
Equation of a circle is given as
(x - h)² (y - k)² = r²
The equation of the circle is written in standard form by completing the square of each of the quadratic equation involved
x² + y² – 2x – 8 = 0
x² - 2x + 1 + y² + 0 = 8 + 1
(x – 1)² + (y - 0)² = 3²
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Use the "Insert Line" Tool to construct the line
showing the given distance. If you need to extend
the line outside the shape, use a dotted line.
(100 points for brainliest answer)
The distance from B to AC can be constructed as shown in the figure.
The distance from G to EF can be constructed as shown in the figure.
The distance from Q to SR can be constructed as shown in the figure.
What is the distance of a line from a point?
A point-to-line distance is the shortest distance from a point to any point on an infinite line. This is the perpendicular distance from the point to the line and the length of the line segment connecting the point to the nearest point on the line.
For the figure 1, the distance from B to AC, will be the perpendicular line through point B on side AC, so side BD will be the distance.
For the figure 2, the distance from G to EF, will be the perpendicular line through point G on side EF, so side GH will be the distance.
For the figure 1, the distance from Q to SR, will be the perpendicular line through point Q on side SR, so side QT will be the distance.
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There are 14 students in a homeroom. How many different ways can they be chosen
to be elected President, Vice President, Treasurer, and Secretary?
There are 24,024 different ways to choose a President, Vice President, Treasurer, and Secretary from a group of 14 students.
Permutation is the arrangement of objects in a specific order. It is the number of different ways in which a set of objects can be arranged in a specific order. The formula to calculate permutation is:
[tex]P(n, r) = n! / (n - r)![/tex]
Permutations are commonly used in mathematics, science, and engineering, and are useful for solving problems that involve counting the number of possible arrangements of objects or events.
We can use the formula for permutations to find the number of ways to choose the four officers from a group of 14 students.
The number of permutations of n objects taken r at a time is given by:
[tex]^nP_r = n! / (n - r)![/tex]
where n! denotes n factorial, which is the product of all positive integers up to n. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
In this case, we want to choose 4 students from a group of 14, and the order in which they are chosen matters (since we are electing them to specific positions). So we have:
n = 14
r = 4
The number of ways to choose the four officers is therefore:
[tex]^1^4P_4 = 14! / (14 - 4)! = 14 \times 13 \times 12 \times 11 = 24,024[/tex]
Therefore, there are 24,024 different ways to choose a President, Vice President, Treasurer, and Secretary from a group of 14 students.
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Julie obtained an installment loan of $4,600 to have some trees removed from her
yard. The APR is 13 percent. The loan is to be repaid in 36 months. What is the
finance charge (Use the table on page 799 for monthly payment)?
O $2,432.02
A
O $12,870.00
B
O $16.15
C
O $980.72
D
The finance charge for Julie's installment loan of $4,600 at 13% for 36 months is D. $979.64.
What is the finance charge?The finance charge represents the interest and other administrative charges for granting a loan to an individual or organization.
The finance charge is always described in terms of the APR (annual percentage rate) that accrues on the loan, depending on the amount and the period.
N (# of periods) = 36 months (3 years x 12)
I/Y (Interest per year) = 13%
PV (Present Value) = $4,600
FV (Future Value) = $0
Results:
PMT = $154.99
Sum of all periodic payments = $5,579.64
Total Interest = $979.64
Thus, Julie will pay a finance charge of $979.64.
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Question Completion:Option D. $979.64
There is no prior information about the proportion of Americans who support free
trade in 2019. If we want to estimate a 98% confidence interval for the true
proportion of Americans who support free trade in 2019 with a 0.21 margin of error,
how many randomly selected Americans must be surveyed? Answer: (Round up your
answer to nearest whole number, do not include any decimals)
31 Americans should be surveyed by Z mean.
What does critical value of Z mean?
The Z-score will show you how far a specific data point is from your sample's mean. This kind of critical value will inform you of the amount of standard deviations above or below the population mean for your sample.If the prior population proportion is unavailable then the formula to find the sample size is given by
n = 0.25[tex](\frac{z^{*} }{E} )^{2}[/tex]
where z* = Critical z-value
E = margin of error
Given, Confidence level = 98%
The critical z-value for 98% confidence interval is 2.326 ( BY z-table)
Margin of error : E= 0.21
n = 0.25 [tex](\frac{2.326}{0.21})^{2}[/tex]
n = 0.25 * ( 11 .07)²
n = 0.25 * 122.5449
n = 30.363225 ≈ 31
Hence, 31 Americans should be surveyed.
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Jerald is having drain issues at his home and decides to call a plumber. The plumber charges $35 to come to his house and $60 for every hour they work. If the plumber charges Jerald a total of $305, how many hours did the plumber work?
Write and solve an equation to determine the number of hours worked by the plumber.
35x + 60 = 305; x = 7 hours
35x − 60 = 305; x = 10.4 hours
60x + 35 = 305; x = 4.5 hours
60x − 35 = 305; x = 5.7 hours
Answer:
60x + 35; x = 4.5 hours
(x is not actually equal to 4.5, it is equal to 4.67)
Step-by-step explanation:
The description says that the plumber charges a one time fee of 35 dollars to come to someones house, and then 60 dollars an hour. The total pay is 305 dollars. x will be the number of hours that the plumber works.
60x + 35 = 305
Subtract 35 from both sides: 60x = 280
Divide by 60: x = 280/60
Simplify: x=14/3
Fraction to decimal: x=4.67
Answer: C (60x + 35 = 305; x = 4.5 hours)
It's right trust me! Wish you luck!
Brainliest?
in a certain industrial facility, accidents occur infrequently. it is known that the probability of an accident on any given day is 0.005 and accidents are independent of each other. what is the probability that in any given period of 400 days there will be an accident on one day? use binomial approximation to poisson distribution.
The probability that in any given period of 400 days there will be an accident on one day is 0.2707
Given that;
In a certain industrial facility, accidents occur infrequently. it is known that the probability of an accident on any given day is 0.005 and accidents are independent of each other.
n = 400, p = 0.005
Poisson distribution is given by;
e P(x) = (λˣe^λ ) / x!
Here, Mean(λ) = np
= 400*0.005
=2
The probability that there will be an accident on one day;
(P(x = 1)) = (λxe-λ)/x!
= 2*e-2
= 0.2707
The probability that in any given period of 400 days there will be an accident on one day is 0.2707
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Step up an inequality for this situation below. Define your variable, but do not solve. (2 points – 1 defined variable, 1 point correct inequality).
Mr. Bass charges his music students $25 per lesson plus a recital fee of $50. How many lessons can a student take if they pay no more than $175?
The lessons can a student take if they pay no more than $175 is 25x + 50 < 175.
What is Inequality?Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.
In the 12U Softball division, Olivia gets chosen. What is Olivia's age? Olivia's age is unknown to you because the word "equals" is missing. However, since you are aware that she should be under or equal to 12, you can write Olivia's Age 12. This is a real-world example of an inequality.
given:
Per lesson charges= $25
Recital f= $50
Total money can be spend= $175
let the number of lessons taken be x.
So, the inequality is
25x + 50 < 175
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Can someone pls help me with this and show your work it would mean a lot
Using the angle of elevation formula, the distance between John and Fred from the building is 1.2m and 1.67m.
What is the angle of elevation?The angular relationship between the horizontal plane and the line of sight for an object above the horizontal.The angle of elevation is the angle created between the line of sight and the horizontal. The angle created is an angle of elevation if the line of sight is upward from the horizontal line.You may calculate the angle of elevation, for instance, by standing on the ground and looking up at the peak of a mountain.So, the distance of the building from John and Fred is:
Let, the height of the building be QR and the distance between the building and John and Fred be PR and SR.Now, we get the formula:
Tanθ = QR/PRTanθ = QR/SRCalculate as follows:
John's distance:
Tanθ = QR/PR25 = 30/PRPR25 = 30PR = 30/25PR = 6/5Fred's distance:
Tanθ = QR/SR18 = 30/SRSR18 = 30SR = 30/18SR = 15/9SR = 1.67mTherefore, using the angle of elevation formula, the distance between John and Fred from the building is 1.2m and 1.67m.
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x+3y+z=-8
2x+y-6z+20
x-2y+z=-13
please help me with this
The solution for the system of equations -
x+3y+z=-8
2x+y-6z=20
x-2y+z=-13
is x = 5.875, y = 1, z = 16.875
What is the general equation of a Straight line?
The general equation of a straight line is -
[y] = [m]x + [c]
where -
[m] is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.
The equation of a straight line in point slope form can be also written as-
[tex]y-y_{1}=m\left(x-x_{1}\right)[/tex]
We have the following set of equations -
x+3y+z=-8 ..[1]
2x+y-6z=20 ..[2]
x-2y+z=-13 ..[3]
We can write eq [3] as -
z = - 13 - x + 2y
So, eq [1] and [2], will become -
x + 3y + (-13 - x + 2y) = -8
x + 3y - 13 - x + 2y = -8
5y = - 8 + 13
5y = 5
y = 1 ..Eq[4]
AND
2x + y - 6z = 20
2x + y - 6(- 13 - x + 2y) = 20
2x + y + 78 + 6x - 12y = 20
2x + 1 + 78 + 6x - 12 = 20
8x = 47
x = 5.875 ..Eq[5]
Now -
x - 2y + z = -13
5.875 - 2 + z = - 13
z = 16.875
Therefore, the solution for the system of equations -
x+3y+z=-8
2x+y-6z=20
x-2y+z=-13
is x = 5.875, y = 1, z = 16.875.
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help meeeeeeeeeeeeee pleaseeeeeeeeee!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
t =2.45s
Step-by-step explanation:
H=-16t2+96t
then, -16t2= -96t
divide both sides by 16
-16t2/16 = -96t/16
-t2 = -6
t2=6
t=√6
t=2.45
which equation represents the graph below?
y = −1/5x − 3y
y = 5x − 3y
y = −1/5x + 3
Answer:
y=-1/5x+3
Step-by-step explanation:
I think this the answer
Answer:
y = -1/5x - 3
Step-by-step explanation:
→ Find the x intercept
( - 15 , 0 )
→ Find y intercept
( 0 , -3 )
→ Find gradient
y = -1/5x + c
→ Substitute coordinate pair in
y = -1/5x - 3
there are 5 major sea islands in the queen elizabeth islands of canada that you are interested in visiting. there are 12 major lakes in saskatchewan, canada that you would also like to visit. (a) if you are planning a trip to visit one of these islands, followed by one of these lakes, how many different trips could you make?
The person can make 60 trips.
Let us say that A indicates the major sea Islands and B indicates the major lakes. Taking both the cases as events, we will use multiplication principle. Based on the information, the event A occurs in m ways and the event B will occur in n ways. So, the two events will occur in m×n ways.
Thus, A × B = 5 × 12
Performing multiplication on Right Hand Side of the equation to find the number of trips
Total number of trips = 60
Hence, there are 60 trips that could be made.
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The equation is y=
Graph of f(x)= |x|
The equation from the given graph is y=-2/3 x²+5.
From the given graph the vertex is (h, k)=(0, 5).
What is quadratic equation of graph?A quadratic function is one of the form f(x) = ax² + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola.
The vertex form of a quadratic function is f(x) = a(x - h)² + k, where (h, k) is the vertex of the parabola. The coefficient a determines whether the graph of a quadratic function will open upwards or downwards.
Here, point on the given line from the graph is (3, -1)
Put (x, y)=(3, -1) and (h, k)=(0, 5) in y = a(x - h)² + k, we get
-1=a(3-0)²+5
⇒ 9a=-6
⇒ a=-2/3
Now, y=-2/3(x-0)²+5
y=-2/3 x²+5
Hence, the equation from the given graph is y=-2/3 x²+5.
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PLEASE HELP ME !!!!!!!
Answer:ok
Step-by-step explanation:
Answer: 1/5 25/48
maybe?
which expression is equivalent to 2 over 5 x 2 over 28
answer:
look
step-by-step explanation:
over? you would have 2 ÷ (5 x 2) ÷ 28. in fraction form.
Given the equation 6x + 18 = 72:
Part A: Write a short word problem about a purchase made to illustrate the equation. (6 points)
Part B: Solve the equation showing all work. (4 points)
Part C: Explain what the value of the variable represents. (2 points)
The short word problem that illustrates the given equation is seen below. The value of the variable is 9.
Expression of the algebraic equation into word problems:Linear algebra equations are equations that can be expressed in word problems and these equations can be used to solve real-life scenarios. These algebraic equations are designed by the application of the desired set of variables with its arithmetic operations.
A.
In a food factory, Eighteen fried chickens are added to the six times the number of food plates is seventy-two. How much-fried chicken goes into each food plate?
B.
6x + 18 = 72
Subtract 18 from both sides;
6x + 18 - 18 = 72 - 18
6x = 54
Divide both sides by 6.
6x/6 = 54/6
x = 9
C.
The value of the variable is 9, and according to the example we used, it represents the number of chickens that goes into each plate of food.
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Write The recursive formula for the sequence 18,22,26,30?
The recursive formula is an = a(n-1) +4. A recursive formula is one that defines each term in a sequence by using the term before it (s)
What is recursive formula?A recursive formula is one that defines each term in a sequence by using the term before it (s). The following parameters are defined by the recursive formulas: The sequence's first term. The pattern rule for obtaining any term from its preceding term. A recursive formula is composed of two parts: a statement of the first term and a statement of the formula that connects successive terms. The sequence is as follows: 10, 15, 20, 25, 30, 35,... Look for a recursive formula. This is an arithmetic sequence (the same number, 5, is added to each term to get to the next term).The sequence's first term
The pattern rule for obtaining any term from its preceding term
Recursive Arithmetic Sequence Formula
To find the nth term of an arithmetic sequence, use the recursive formula:
an = an-1 + d for n ≥ 2
Where
an is the nth term of a A.P.
d is the common difference.
Given:
14, 18, 22, 26, 30, …
a1 = 14
and, d = 18-14
d = 4
a2 = a1 + 4
a2 = 14 + 4 = 18
Similarly, going this way
an = a(n-1) +4
Hence, the recursive formula is an = a(n-1) +4
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Find the equation of the vertical line that passes through point M(−2, 6)
The equation for the vertical line that goes through point M(−2, 6) is x = -2.
Answer:
The equation of a straight line is:
y = mx + b;
y, x are variables, m is the slope of the line and b is the y intercept.
The slope of a vertical is undefined. Since the line passes through the point M(−2, 6), hence the equation of the vertical line is:
x = -2