find nth term of this quadratic sequence:
1,12,29,52,81

Answers

Answer 1

The nth term of the quadratic sequence 1, 12, 29, 52, 81 is T(n) = 2n² - n - 2.

1. Check for a Quadratic Sequence:

To determine if a sequence is quadratic, we look at the differences between consecutive terms, and then the differences between those differences (second differences).

First differences: 11, 17, 23, 29

Second differences: 6, 6, 6

The sequence is quadratic since the second differences are constant.

2. General Form of a Quadratic Sequence:

The quadratic sequence formula in general is:

T(n) = an² + bn + c

Where:

T(n) is the nth term

a, b, and c are constants to be determined

3. Forming Equations:

We can use the first three terms of the sequence to create three equations:

For n = 1: a(1)² + b(1) + c = 1

For n = 2: a(2)² + b(2) + c = 12

For n = 3: a(3)² + b(3) + c = 29

Simplifying these equations, we get:

a + b + c = 1

4a + 2b + c = 12

9a + 3b + c = 29

4. Solving the Equations:

By concurrently solving this set of equations, we arrive at:

a = 2

b = -1

c = -2

5. Finding the nth Term:

Substituting the values of a, b, and c into the general formula, we get: T(n) = 2n² - n - 2


Related Questions

Convert 6 4/5 into an improper fraction

Answers

Answer:

34/5

Step-by-step explanation:

6*5=30 + 4 = 34

34/5

Final answer:

The mixed number 6 4/5 can be converted into an improper fraction by multiplying the whole part by the denominator and adding the numerator to the result, giving us 34/5.

Explanation:

To convert the mixed number 6 4/5 into an improper fraction, you follow these steps:

Multiply the whole part of the mixed number (which is 6 in this case) by the denominator of the fractional part (which is 5).Add the result to the numerator of the fractional part (which is 4). This is your new numerator.The denominator of the improper fraction remains the same as the denominator of the fractional part in the mixed number.

So, (6*5)+ 4 = 34. Therefore, the mixed number 6 4/5 can be written as the improper fraction 34/5.

Learn more about Improper Fraction here:

https://brainly.com/question/34414077

#SPJ3

Point R is the midpoint of line QS. R is located at (5, -7.5) S is located at (-1,-13) What is the location of Point Q?

Answers

Answer: ( 11, -2 )

Step-by-step explanation:

The mid point of a line is calculated using the formula:

M = ([tex]\frac{x_{1}+x_{2}}{2}[/tex] , [tex]\frac{y_{1}+y_{2}}{2}[/tex] )

From the question , the mid point is already given , substituting , we have :

(5 , - 7.5 ) = ([tex]\frac{x-1}{2}[/tex] , [tex]\frac{y-13}{2}[/tex] )

Equating the x component to x and the y component to y , we have

5 = [tex]\frac{x-1}{2}[/tex]

x - 1 = 10

x = 11

Also

- 7.5 = [tex]\frac{y-13}{2}[/tex]

-15 = y - 13

-15 + 13 = y

Therefore : y = -2

Therefore : the location of point P is ( 11, -2 )

An index has a length of 7 cm and width of 4 cm. What it’s perimeter?

Answers

Answer:

22

Step-by-step explanation:

7+7+4+4=22

A shelf contains 28 boxes of cereal. Each box has a mass of 375 grams.
Which equation can you use to find the total mass of the boxes?
What is the total mass, m, in grams of all the boxes?
A.28 + 375 = m; m = 403 grams
B.28 x 375 = m; m = 1,050 grams
C.28 x 375 = m; m = 10,500 grams
D.28 x 375 =m; m = 11,500 grams

Answers

Answer:

Step-by-step explanation:

each box is 375 grams...and there are 28 boxes

total mass(m) = 28 * 375 = 10,500 grams

The weight of all the boxes of cereals can be found by the equation (C) "28 x 375 = m" and the weight is 10,500 grams.

What are equations?Two expressions are combined by the equal sign to form a mathematical statement known as an equation. Algebraically speaking, an equation is a statement that shows the equality of two mathematical expressions. For instance, the two equations 3x + 5 and 14, which are separated by the 'equal' sign, make up the equation 3x + 5 = 14.

So, the total mass of all the boxes:

The number of boxes is 28.Each box weighs 375 grams.

Then, calculate as follows:

375 × 28 = m375 × 28 = 10,500 grams

So, option (C) is correct.

Therefore, the weight of all the boxes of cereals can be found by the equation (C) "28 x 375 = m" and the weight is 10,500 grams.

Know more about equations here:

https://brainly.com/question/28937794

#SPJ2

A bag contains eight yellow marbles, nine green marbles, three purple marbles, and five red marbles. Two marbles are chosen from the bag. What expression would give the probability that one marble is yellow and the other marble is red?

Answers

Answer:

The second choice

Step-by-step explanation:

Answer:

Step-by-step explanation:

0.971

This is the correct answer.

I need help with my ixl problem please help as soon as possible and tell me what the blanks are pls

Answers

This equation would be y = 4x-7 because if you plug in the point (3,5) 4 times 3 is twelve and 12 minus 7 is 5

How to solve the word problem The ant walked 53 cm. The caterpillar crawled 22 cm farther than the ant. How far did the caterpillar crawl?

Answers

If the caterpillar crawled 22cm farther than the ant, then we are adding 53 and 22 to get 75cm.

Answer:

75cm

Step-by-step explanation:

53 + 22 = 75

Is 1/4 and 3/12 equal

Answers

1/4=.25

3/12=.25

yes they are equal

In a triangle, the measure of the first angle is five times the measure of the second angle. The measure of the third angle is 40 less than five times the measure of the second angle. What is the measure, in degrees, of each angle?

Answers

Answer:

s = 20   F = 100    T = 60

Step-by-step explanation:

F = 5s                F + s + T = 180

T = 5s - 40

I picked numbers until I found the one that worked. For me, 20 worked for the second angle.

The measure of first angle, second angle, and the third angle is 100, 20 and 60.

Given that,

In a triangle, the measure of the first angle is five times the measure of the second angle. The measure of the third angle is 40 less than five times the measure of the second angle.here we assume second angle be s, first angle be f and third angle be tt

Based on the above information, the calculation is as follows:

F = 5s                

F + s + T = 180

T = 5s - 40

Now

5s + s + 5s - 40 = 180

11s = 220

s = 20

F = 100

T = 100 - 40

= 60

Learn more: brainly.com/question/17429689

Y=1/3x-4; y=7/3x+4 solve by substitution

Answers

Answer Problem 1: 3*(y+4)

Show Work:

1) y = (1/3)*x-4 // - (1/3)*x-4

2)  y-((1/3)*x)+4 = 0

3) (-1/3)*x+y+4 = 0

4)  y-1/3*x+4 = 0 // - y+4

5)  -1/3*x = -(y+4) // : -1/3

6)  x = (-(y+4))/(-1/3)

7)  x = 3*(y+4)

8) x = 3*(y+4)

Answer Problem 2: Y=-7/12

Show Work:

Step 1: Flip the equation.

7/3 x+4=y

Step 2: Add -4 to both sides.

7/3x+4+−4=y+−4

7/3x=y−4

Step 3: Divide both sides by 7/3.

The owner of a small store buys coats for ​$60.00 each. He sells the coats for ​$96.00 each. What percent of the purchase price is the sale​ price?

Answers

The sale price of the coats is 160% of the purchase price of the coats.

Step-by-step explanation:

The owner buys the coats at a purchase price= $60

He sells the coats for a selling price= $96

Now, the question is:

The selling price $96 is what percentage of the purchase price $60

step 1: 96= x% of 60

step 2: 96= (x/100)*60

step 3: 96= 6x/10

step 4: 960/6 = x

step 5: x = 160%

Do these rates form a proportion?
21 miles in 6hours and 14.3 miles in 3 hours

Answers

Answer:

These rates DO NOT  form a proportion.

Step-by-step explanation:

Two quantities P and Q are said to be in proportion is and only if:

[tex]\frac{P}{Q} = k[/tex]  for all values of P and Q.

here, k = Proportionality Constant.

Case 1: when P =  21 miles , Q  = 6 hours

[tex]\frac{P}{Q} = \frac{21}{6} = 3.5[/tex]

⇒  k 1 = 3.5

Case 2: when P =  14.3 miles , Q  = 3 hours

[tex]\frac{P}{Q} = \frac{14.3}{3} = 4.76[/tex]

⇒  k 2 = 4.76

As we can see in both the cases, k 1 ≠ k 2

Hence, P is NOT PROPORTIONAL to Q.

So, these rates DO NOT  form a proportion.

Which is NOT a factor affecting your Credit Score? Question 1 options: A.Types of Credit B. Salary C.Payment History D.Length of Credit History

Answers

Answer:

B salary

Step-by-step explanation:

Your employment status, salary, and bank account balances are never disclosed on your report and have no bearing on your rating.

What impact of Salary on Credit Score?

Although your income has no bearing on your credit score, it's still crucial to understand the five key components of a FICO credit score, the most widely used credit score by lenders.

History of payments (35%): Your credit score is mostly influenced by whether you have a history of making on-time payments on your credit accounts.

Your salary does not directly affect your credit score, but it does affect your ability to pay off credit card debt.

Therefore, Your race, gender, marital status, level of education, religion, political party, or source of income are all factors that are never taken into account when calculating your credit ratings.

Learn more about Credit Score here:

https://brainly.com/question/8609109

#SPJ3

Use the values in the table to determine the slope

Answers

The table is not given

Two fractions have denominators 4 and 6. Their sum is 19/12
If the numerators are switched their sum is 7/4
Determine the value of the numerators.​

Answers

The value of numerators are 3 and 5

Solution:

Let the numerators of two fractions be x and y

Two fractions have denominators 4 and 6. Their sum is 19/12

Therefore,

[tex]\frac{x}{4} + \frac{y}{6} = \frac{19}{12}[/tex]

Cross multiply L.H.S to get simplified

[tex]\frac{6x+4y}{24} = \frac{19}{12}\\\\6x + 4y = 38 ------- eqn 1[/tex]

If the numerators are switched their sum is 7/4

Therefore,

[tex]\frac{y}{4} + \frac{x}{6} = \frac{7}{4}[/tex]

On simplification, we get

[tex]\frac{6y + 4x}{24} = \frac{7}{4}\\\\4x + 6y = 42 -------- eqn 2[/tex]

Solve eqn 1 and eqn 2

Multiply eqn 1 by 4

24x + 16y = 152 --------- eqn 3

Multiply eqn 2 by 6

24x + 36y = 252 ---------- eqn 4

Subtract eqn 3 from eqn 4

24x + 36y = 252

24x + 16y = 152

( - ) -------------------

20y = 100

y = 5

Substitute y = 5 in eqn 1

6x + 4(5) = 38

6x = 38 - 20

6x = 18

x = 3

Thus the value of numerators are 3 and 5

Jesus spent 1/4 of his money on a pizza and 1/4 of his money on salad. What fraction of his money did Jesus spend on dinner?

Answers

Answer:

2/4 of his money was spent on dinner

Step-by-step explanation:

Answer:

2/4 or 1/2 of his money of dinner

Step-by-step explanation:

When using your brain you come to the conclusion that the pizza and the salad is his dinner because it is food, so we add those two fractions together to get 2 out of 4 or 1 out of 2.

A used car is for sale for $24,000. Jared took a chance and offered the owner 1/4 of the selling price. How much did Jared offer?

Answers

Answer:

Jared offer $6,000.

Step-by-step explanation:

Given:

A used car is for sale for $24,000. Jared took a chance and offered the owner 1/4 of the selling price.

Now, to find the price Jared offer.

Selling price = $24,000.

Jared offer = [tex]\frac{1}{4}[/tex]  of selling price.

So, to get the price Jared offer:

[tex]\frac{1}{4}\ of\ \$24000[/tex]

[tex]=\frac{1}{4} \times 24000[/tex]

[tex]=\frac{24000}{4}[/tex]

[tex]=\$6000.[/tex]

Therefore, Jared offer $6,000.

Trapezoid JKLM is is shown below. What is the length in centimeters, of KL

Answers

The complete question is:

Trapezoid JKLM is shown below.

What is the length, in centimeters, of KL ?

A. 12 cm

B. 10 cm

C. 9 cm

D.  6 cm

The mentioned figure is attached.

Answer:

[tex]\large\boxed{option\text{ B. }(\overline{KL})=10cm}[/tex]

Explanation:

1. KL is the hypotenuse of a right triangle; hence, you can use Pythagora's theorem to find its length.

2. The height 8 cm is one leg of the right triangle.

3. The other leg may be found by difference:

     [tex]\overline{ML} -\overline{JK}=15cm-9cm=6cm[/tex]

4. Now you can use Pythagora's theorem:

[tex]hypotenuse^2=(leg_1)^2+(leg_2)^2\\ \\ (\overline{KL})^2=(8cm)^2+(6cm)^2\\ \\ (\overline{KL})^2=64cm^2+36cm^2=100cm^2\\ \\ (\overline{KL})=10cm[/tex]

A 5000​-seat theater has tickets for sale at ​$26 and ​$40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of ​$149 comma 600​?

Answers

Answer:

3,600 from $26 tickets  and  1,400 from $40 tickets.  

Step-by-step explanation:

Let x = number of $26 tickets and y= number of $40 tickets

x + y = 5000  ⇒ x = 5000 - y

26x + 40y = 149,600

26(5000 - y) + 40y = 149600

130,000 - 26y + 40y = 149600

14y = 19600

y = 19600/14 = 1,400

x = 5000 - 1400 = 3,600

So, 3,600 from $26 tickets  and  1,400 from $40 tickets.

Final answer:

To determine the number of tickets sold at each price, set up a system of equations using the given information and solve for the variables.

Explanation:

To determine how many tickets should be sold at each price, we can set up a system of equations using the given information.

Let's assume the number of $26 tickets sold is x and the number of $40 tickets sold is y.

The total number of tickets sold is x + y, so we have the equation x + y = 5000.

The revenue generated from $26 tickets is 26x, and the revenue generated from $40 tickets is 40y. The total revenue

is given as $149,600, so we have the equation 26x + 40y = 149600.

Solving this system of equations will give us the values of x and y.

what is the solution of |-1 + x| = 5

Answers

Answer:

6, -4

Step-by-step explanation:

abs(-1+x)=5

-1+x=5 and -1+x=-5

-------------------------

-1+x=5

x=5-(-1)=5+1=6

-------------------

-1+x=-5

x=-5-(-1)=-5+1=-4

(2x^3-3x^2-19x+30)/(x-3)

Answers

Answer:

2x^3 + 3x - 10

Step-by-step explanation:

dkdoodwoskfkvglelwldlgltwkqkdof the answer is -8

Find the value of two numbers if their sum is 13 and their difference is 3

Answers

Consider the two numbers as

x and y

. From the given data, we write:

x−y=3

x+y=13

From the first equation, we determine a value for x.

x−y=3

Add y to both sides.

x=y+3

In the second equation, substitute x with (y+3).

x+y=13

(y+3)+y=13

Open the brackets and simplify.

y+3+y=13

2y+3=13

Subtract 3 from each side.

2y=10

Divide both sides by 2.

y=5

In the first equation, substitute y with 5.

x−y=3

x−5=3

Add 5 to each side.

x=8

Mark as Brainliest

Let u = <-3,4>, v = <8, 2>. Find u + v.

Answers

Answer:   < 5, 6 >

=================================================

Explanation:

In general if

u = < a, b > and v = < c, d >

then,

u+v = < a+c, b+d >

Basically we add the x coordinates separately and the y coordinates are added separately.

----------

So,

u = < -3, 4 >

v = < 8, 2 >

u + v = < -3+8, 4+2 >

u + v = < 5, 6 >

I need answer for this​

Answers

The perimeter of the garden is 57.14 m and

the total area of the garden is 178.28 sq. m.

Solution:

Given length of the rectangle = 16 m

Width of the rectangle = 8 m

Radius of the semi-circle = half of the width of the rectangle

Radius = 4 cm

Perimeter of the garden is two lengths of the rectangle and 2 curve sides of the semi-circle.

Perimeter = [tex]2l+2(\frac{2\pi r}{2} )[/tex]

               = [tex]2l+2\pi r[/tex]

               = [tex]2(16)+2\times\frac{22}{7}\times4[/tex]

               = 32 + 25.14

               = 57.14 m

Total area of the garden is the area of the rectangle and area of the two semi-circles.

Area of the garden = [tex](l\times w)+ 2(\frac{\pi r^2}{2})[/tex]

                              = [tex](l\times w)+ \pi r^2[/tex]

                              = [tex]16\times8+\frac{22}{7} \times 4\times 4[/tex]

                              = 128 + 50.28

                              = 178.28 square meter

Hence, the perimeter of the garden is 57.14 m and

the total area of the garden is 178.28 sq. m.

a bookstore employee is given a 20% discount off the retail price of any book. assuming there is no tax, how many dollars does she pay for a book with a retail price of $55?

Answers

Answer:

 = $ 49.5

Step-by-step explanation:

We are given;

Discount off retail price is 20%Retail price is $55

Required to determine the amount paid

Taking the retail price as 100%

Then, amount paid will be (100 % - 10%) 90% of the retail price

Therefore;

Amount paid = 90% × $ 55

                     = 0.9 × $ 55

                     = $ 49.5

Thus, the employee paid $ 49.5 for the book.

Solve the 2 step equation 3x+3=15

Answers

Subtract the entire equation by 3: 3x = 12

Lastly, divide by 3 to get x alone: x = 4

Answer: 4

Step-by-step explanation:

3x+3=15

    -3 -3

3x    12

3      3

x= 4

Divide 7.956 . 10-6 by 2.55 - 10-3

Answers

Answer: 3.12 x 10^-3

Step-by-step explanation:

NEED HELP PLEASE!
Fill in the blank with the correct response. If 3/4 = x/8, then x is equal to.
THANKS!

Answers

to find this answer, we can cross multiply. cross multiplying multiples the denominator of one fraction by the numerator of the other, and then the numerator of one fraction by the denominator of the other (a/b=c/d, cross multiply to get ad = bc.) in this case, it would be 3*8= 4*x, so 24 = 4x. divide both sides by 4 to get x = 6.

answer x = 8

because 3/4 times 2 equals 6/8 so the solution is 6/8

Mariko says that the graph that passes through (-3,-3), (-3,0), and (-3,3) represents a
linear function. Is she correct? Explain your reasoning.​

Answers

Answer:

The graph that passes through (-3,-3), (-3,0), and (-3,3) does not represents a linear function.

Step-by-step explanation:

The graph that passes through (-3,-3), (-3,0), and (-3,3) does not represents a linear function. Because if we tried to find the slope for either two pairs of these coordinates. The slope would equal infinity

Lets say we find the slope of (-3,-3) and (-3,0)

[tex]\frac{-3-0}{(-3)-(-3)} =\frac{-3}{0}[/tex]  Slope = [tex]\infty}[/tex]

Now lets say we find the slope of (-3,0) and (-3,3)

[tex]\frac{0-3}{(-3)-(-3)} =\frac{-3}{0}[/tex] Slope = [tex]\infty[/tex]

So now we can see that both lines of each slope is parallel to the y-axis which means that the lines a Undefined Slope (also known as Infinite Slope).

Darcy harvest 8 3/4 acres of corn every 5/6 of an hour. How many acres per hour?

Answers

Answer:

The answer is [tex]10\frac{1}{2}\ per\ hour.[/tex]

Step-by-step explanation:

Given:

Darcy harvest 8 3/4 acres of corn every 5/6 of an hour.

Now, to find the acres per hour it takes to harvest.

Darcy harvest = [tex]8\frac{3}{4}=\frac{35}{4}\ acres.[/tex]

The time he took to harvest = [tex]\frac{5}{6}\ hour.[/tex]

So, to get the acres per hour we put formula:

[tex]Distance = \frac{35}{4}\ acres.[/tex]

[tex]Time=\frac{5}{6}\ hour.[/tex]

[tex]Speed=\frac{distance}{time}[/tex]

[tex]Speed=\frac{\frac{35}{4}}{\frac{5}{6}}[/tex]

[tex]Speed=\frac{35}{4}\times \frac{6}{5}[/tex]

[tex]Speed=\frac{210}{20}[/tex]

[tex]Speed=\frac{21}{2}[/tex]

[tex]Speed=10\frac{1}{2}\ per\ hour.[/tex]

Therefore, the answer is [tex]10\frac{1}{2}\ per\ hour.[/tex]

Other Questions
what are the solutions of 3 x^2-x+4=0 Before the evolution of complex nervous systems, animals with very simple nervous systems, such as the nerve nets of cnidarians, could engage in all of the behaviors except __________ Which of the following model organisms is a multicellular worm usedto study the process of development? a)Saccharomyces cerevisiaeb) Caenorhabditis Which of the following serves as the justification for the periodic recording of depreciation expense? a. Association of efforts (expense) with accomplishments (revenue) b. Systematic and rational allocation of cost over the periods benefited c. Immediate recognition of an expense d. Minimization of income tax liability If n denotes a number to the left of 0 on the number line such that the square of n is less than [tex]\small \frac{1}{100}[/tex], then the reciprocal of n must be _________. Solve the rational equation quantity 3 times x plus 2 end quantity divided by 5 equals quantity 2 times x minus 1 end quantity divided by 3. x = 1 x = 3 x = 6 x = 11 7p-30p + 8 how do you factor this trinomial At a certain college, 30% of the students major in engineering, 20% play club sports, and 10% both major in engineering and play club sports. A student is selected at random. What is the probability that the student is majoring in engineering? For the right triangle shown, the lengths of two sides are given. Find the third side. Leave your answer in simplified,radical form.b = 9, C = 16 Governmental projects should follow the __________ rules to deliver specific deliverables, artifacts, and products. Sometimes called _____, books that expressed the diversity of voices and experiences of late-20th-century America were celebrated as a way to promote cross-cultural understanding by examining the different value systems, histories, traditions, and speech patterns of people in America. Identify the correct sentence. A. His cake tastes especially well. B. His cake tastes excellently. C. He bakes both cake and pie good. D. His cake tastes especially good. Becky had net credit sales in 2020 of $2,000,000. At December 31, 2020, before adjusting entries, the balances in selected accounts were: accounts receivable $1,700,000 debit, and allowance for doubtful accounts $2,200 credit. Becky estimates that 8% of its credit sales will prove to be uncollectible. What is the ending balance in the bad debt expense reported on December 31, 2020? 1. No tengo ganas de ir a ____ lugar hoy.2. Tienes ____ ideas para mejorar (to improve) la econooma?3. Viene ____ a la fiesta de maana?4. No voy a ____ estadio nunca.5. Te gusta ____ de estas corbatas?6. Jorge, t no eres el nico. Yo ____ puedo ir de vacaciones. Read the paragraphs from The Golden Bird. He met the fox, who gave him the good advice: but when he came to the two inns, his eldest brother was standing at the window where the merrymaking was, and called to him to come in; and he could not withstand the temptation, but went in, and forgot the golden bird and his country in the same manner. Time passed on again, and the youngest son too wished to set out into the wide world to seek for the golden bird; but his father would not listen to it for a long while, for he was very fond of his son, and was afraid that some ill luck might happen to him also, and prevent his coming back. However, at last it was agreed he should go, for he would not rest at home; and as he came to the wood, he met the fox, and heard the same good counsel. But he was thankful to the fox, and did not attempt his life as his brothers had done. Based on these paragraphs, what point of view does the author use in the story?a. first-person point of viewb. third-person omniscient point of viewc. second-person point of viewd. third-person limited point of view Complete the following proof.Given: m XOY = m WOVm YZ = m ZWProve: m XZ = m ZV Which resource would be best to use for writing a research paper on the effect of sunlight on plant growth? What was the nickname given for Teddy Roosevelt's progressive plan forthe American people after he became President?ONew DealSquare DealODeal or No DealOProgressive Deal What is 4^150 divided by 2^150? What country had the first newspaper? Steam Workshop Downloader