Find the sum of the first 10 terms of the following geometric sequences:

{3, 6, 12, 24, 48...}


3066


3075


3069


3072

Answers

Answer 1

Answer: The sum of the first 10 terms of the given geometric sequence is 3069.

Step-by-step explanation:

A geometric sequence is a sequence of numbers such that any two consecutive terms are in a constant ratio.

The first term of the given sequence is 3 and the common ratio is 2 (6/3 = 12/6 = 24/12 = ...).

To find the sum of the first 10 terms of a geometric sequence, we can use the formula:

S = a(1 - r^n)/(1 - r)

where a is the first term, r is the common ratio and n is the number of terms.

So for this geometric sequence:

S = 3(1 - 2^10)/(1 - 2) = 3(1 - 1024)/(-1) = 3(-1023)/(-1) = 3069

Explanation: By using the formula for the sum of a geometric sequence, the sum of the first 10 terms of the sequence was found by substituting the first term, common ratio and number of terms into the formula.

Answer 2

Answer:

C)  3069

Step-by-step explanation:

A geometric series is the sum of the terms of a geometric sequence.

[tex]\boxed{\begin{minipage}{7 cm}\underline{Sum of the first $n$ terms of a geometric series}\\\\$S_n=\dfrac{a(1-r^n)}{1-r}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\ \phantom{ww}$\bullet$ $r$ is the common ratio.\\\end{minipage}}[/tex]

Given geometric sequence:

{3, 6, 12, 24, 48...}

From inspection of the sequence, the first term is 3:

[tex]\implies a=3[/tex]

To find the common ratio, divide consecutive terms:

[tex]\implies r=\dfrac{a_2}{a_1}=\dfrac{6}{3}=2[/tex]

To find the sum of the first 10 terms, substitute the found values of a and r together with n=10 into the geometric series formula:

[tex]\implies S_{10}=\dfrac{3(1-2^{10})}{1-2}[/tex]

[tex]\implies S_{10}=\dfrac{3(1-1024)}{1-2}[/tex]

[tex]\implies S_{10}=\dfrac{3(-1023)}{-1}[/tex]

[tex]\implies S_{10}=\dfrac{-3069}{-1}[/tex]

[tex]\implies S_{10}=3069[/tex]

Therefore, the sum of the first 10 terms of the given geometric sequence is:

3069

Related Questions

What is the equation of the midline of the sinusoidal function?

Answers

Answer:

y = -3

Step-by-step explanation:

The midline of a sinusoidal function is y = a where "a" is halfway between the minimum and maximum y-values of the function.

From inspection of the given graph:

Maximum y-value = 1Minimum y-value = -7

Therefore, the y-value that is halfway between the minimum and maximum points is:

[tex]\implies y=\dfrac{y_2+y_1}{2}=\dfrac{-7+1}{2}=\dfrac{-6}{2}=-3[/tex]

Therefore, the equation of the midline of the given sinusoidal function is:

y = -3

If f(x)=4x^4-3x^2+4f(x)=4x
4
−3x
2
+4, then what is the remainder when f(x)f(x) is divided by x+3x+3?

Answers

Answer:

synthetic division method use it

The graph of the function f(x) =-3x^2 - 3x + 6 is shown. Which statements describe the graph? Select three options.
1) The vertex is the maximum value.
2) The axis of symmetry is x = -1/2.
3) The domain is all real numbers.
4) The range is all real numbers.
5) The function is decreasing from (-∞, 6.75).

Answers

Answer:

1) The vertex is the maximum value.

2) The axis of symmetry is x = negative one-half.

3) The domain is all real numbers.    

Step-by-step explanation:

if an adult and kids went to a theater and it 3.50 perticket for each adult and it was 2.50 for children and they sold 321 tickets and made 972.21 dollars how many tickets for aduklts and children

Answers

number of tickets for adult = 170 and number of tickets for children = 151

What is equation with two variables?

The equation that has two unknown variables and express the equality between two or more expression is called equation with two variables.

How many tickets for adult and kids?

let, x denotes the number of adults went to theater.

y denotes the number of children went to theater

price of ticket for each adult = $3.50

price of tickets for each child = $2.50

if the number of total tickets = 321

x + y = 321

total cost of tickets = $3.50x + $2.50y = 972.21 dollar

we will solve the above two equations, y = 321 - x

by putting the y value in the second equation,

3.50x + 2.50 (321- x) = 972.21

3.50x + 802.5 - 2.50x = 972.21

x = 169.71

number of adults went to theater = 170

from, y = 321 -169.71

    y = 321 - 169.71

y = 151.3, y= 151

number of children went to theater = 151

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Yen is planning for her retirement. She is 30 years old today and would like to have RM800,000 when she turns 55. She estimates that she will be able to earn a 9% rate of return on her retirement investment over time; she wants to set aside a constant amount of money every year (at the end of the year) to help achieve her objective. How much money must she invest at the end of each of the next 25 years to realize her goal of RM800,000 at the end of that time?

Answers

To calculate the amount Yen needs to invest at the end of each year to reach her goal, we can use the formula for the present value of an annuity:

PV = PMT * ((1 - (1 + r)^(-n)) / r)

Where:

PV = present value (the amount Yen wants to have at retirement)
PMT = the constant annual payment (what Yen needs to invest each year)
r = the annual interest rate (9% in this case)
n = the number of years until Yen's retirement (25 years)

So, to find the PMT, we can rearrange the formula to:

PMT = PV / ((1 - (1 + r)^(-n)) / r)

Plugging in the given values:

PMT = 800,000 / ((1 - (1 + 0.09)^(-25)) / 0.09)

PMT = RM 16,939.22

Therefore, Yen must invest RM16,939.22 at the end of each year for the next 25 years to reach her goal of RM800,000 at retirement.

Let A= {a,b,c,d,e,f } and let B= {1,2,3,} determine n(AxB)

Answers

The value of n(AxB) is mathematically given as

n(A x B)  = 18

What is the magnitude of the sample?

Generally, It is possible to extend the formula for calculating the magnitude of a vector to any number of dimensions. For instance, the magnitude of a four-dimensional vector denoted by

a=(a1,a2,a3,a4) may be calculated using the following formula: a=a21+a22+a23+a24.

The question "how much of a quantity" is what's meant to be answered when one asks about magnitude.

For instance, the magnitude may be used to provide an explanation for why the speeds of a vehicle and a bicycle cannot be compared directly to one another. It is also possible to use it to describe the distance traveled by an item or the quantity of an object in terms of its magnitude. Both of these applications need the usage of magnitude.

n(A x B) = |A| x |B|

= 6 x 3

n(A x B)  = 18

Where

|A| is the number of elements in set A (in this case, 6) and |B| is the number of elements in set B (in this case, 3).

The product of these two values is the total number of ordered pairs that can be formed from the elements of A and B, which is 18.

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help me with this question and find f8

Answers

Answer:

f(8) = - 1

Step-by-step explanation:

f(8) has x = 8 which is in the interval x > 0 , then f(x) = - 1 , so

f(8) = - 1

Question 3 of 10
Jordan signed a finance agreement for her recent purchase. What is the
collateral for her loan?

Answers

The collateral for the loan that Jordan signed the finance agreement, is nothing. There was no collateral.

What is an unsecured loan ?

A loan that doesn't require any sort of collateral is known as an unsecured loan. Lenders approve unsecured loans based on a borrower's creditworthiness rather than their assets as collateral. Personal loans, school loans, and credit cards are a few examples of unsecured loans.

Since secured loans are safer for lenders to approve than unsecured loans, unsecured loans need better credit scores.

Jordan most likely made a purchase with her credit card and so the finance agreement she signed would therefore likely be an unsecured loan with no collateral.

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What is the equation?
N=4 Y=3

2y + 6n

Answers

The answer would be 30

First, you’ll input the coefficients into the variable

2(3) + 6(4)

Next, you’ll multiply 2 x 3 and 6 x 4

6 + 24

Afterwards, you’ll solve

30

Find the distance between the two points rounding to the nearest tenth (If necessary)
(1,-3) and (-7,2)

Answers

Answer:

Step-by-step explanation:

Distance formula is as follows.

The distance between two co-ordinates, say, (x₁ , y₁) and (x₂,y₂), is equal to

√((x₁ - x₂)² + (y₁ - y₂)²)

Just substitute the values here.

√((1 - (-7) )² + ( - 3 - 2)²)

= √((1 + 7)² + ( - 3 - 2)²)

= √(8² + -5²)

= √(65 + 25)

= √90  ≈9.5 units

Pls mark as brainliest. I really need for no apparent reason. Cheers

What is the nth term rule of the quadratic sequence below?

5
,

3
,
3
,
13
,
27
,
45
,
67
,
.
.
.

Answers

Answer:

Step-by-step explanation:

y=ax²+bx+c

x=1,y=-5

-5=a+b+c   ...(1)

x=2,y=-3

-3=4a+2b+c   ...(2)

x=3,y=3

3=9a+3b+c  ...(3)

(2)-(1) gives

2=3a+b   ...(4)

(3)-(2) gives

6=5a+b   ...(5)

(5)-(4) gives

4=2a

a=4/2=2

from (4)

6=5(2)+b

b=6-10=-4

from (1)

-5=2+(-4)+c

-5=-2+c

c=-3

y=2x²-4x-3

helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

x = 10 (yes)

x = 14 (yes)

x = 6 (no)

x = 4 (no)

Step-by-step explanation:

Plug in each x value into the function and determine if it is true or not.

44 [tex]\leq[/tex] 35 + x

44 [tex]\leq[/tex] 35 + (10)

44 [tex]\leq[/tex] 45

45 is greater than or equal to 44, so it is a solution

44 [tex]\leq[/tex] 35 + (14)

44 [tex]\leq[/tex] 49

49 is greater than or equal to 44, so it is a solution

44 [tex]\leq[/tex] 35 + (6)

44 [tex]\leq[/tex] 41

41 is not greater than or equal to 44, so it is not a solution

44 [tex]\leq[/tex] 35 + (4)

44 [tex]\leq[/tex] 39

39 is not greater than or equal to 44, so it is not a solution

I hope this helps! :)

A person standing on an escalator reaches the top in 3 minutes. How many minutes will it take the person to reach the top if he walks up the moving escalator at a speed of 25 meters per minute? The escalator is 150 meters long.

Due today, I NEED HELP!!

Answers

If he walks up the moving escalator at a speed of 25 meters per minute,

the person will reach the top in six minutes.

What is division?

The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.

Given:

A person standing on an escalator reaches the top in 3 minutes.

The escalator is 150 meters long.

He walks up the moving escalator at a speed of 25 meters per minute.

So, the time taken = divide 150 by 25

The time taken = 150/25

The time taken = 6 minutes.

Therefore, he will reach the top in six minutes.

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McGuire Corporation began operations in 2021. The company purchases computer equipment from manufacturers and then sells to retail stores. During 2021, the bookkeeper used a check register to record all cash receipts and cash disbursements. No other journals were used. The following is a recap of the cash receipts and disbursements made during the year.

Cash receipts:
Issue of common stock $ 50,000
Collections from customers 320,000
Borrowed from local bank on April 1, note signed requiring
principal and interest at 12% to be paid on March 31, 2022 40,000
Total cash receipts $ 410,000
Cash disbursements:
Purchase of merchandise $ 220,000
Payment of salaries 80,000
Purchase of office equipment 30,000
Payment of rent on building 14,000
Miscellaneous expense 10,000
Total cash disbursements $ 354,000

You are called in to prepare financial statements at December 31, 2021. The following additional information was provided to you:


Customers owed the company $22,000 at year-end.
At year-end, $30,000 was still due to suppliers of merchandise purchased on credit.
At year-end, merchandise inventory costing $50,000 still remained on hand.
Salaries owed to employees at year-end amounted to $5,000.
On December 1, $3,000 in rent was paid to the owner of the building used by McGuire. This represented rent for the months of December through February.
The office equipment, which has a 10-year life and no salvage value, was purchased on January 1, 2021. Straight-line depreciation is used.

What is the Balance sheet?

Answers

The balance sheet for McGuire Corporation as at December 31, 2021, is as follows:

McGuire Corporation

Balance Sheet

As at December 31, 2021

Assets

Current Assets:

Cash                                  $56,000

Accounts Receivable       $22,000

Inventory                          $50,000

Rent Prepaid                      $2,000

Total current assets                          $130,000

Long-term assets:

Office Equipment              $30,000

Accumulated Depreciation (3,000)  $27,000

Total assets                                      $157,000

Liabilities and Equity

Current Liabilities:

Accounts payable                            $30,000

Salaries Payable                                $5,000

Interest Payable                                $3,600

Total current liabilities                    $38,600

Long-term liabilities:

Notes Payable                                $40,000

Total liabilities                                $78,600

Stockholders' Equity:

Common Stock      $50,000

Net income            $28,400          $78,400

Total liabilities and Equity           $157,000

What is the Balance sheet?

The balance sheet is one of the financial statements where an entity or individual reports their financial position.

The financial position consists of assets, liabilities, and equity or net worth at a specific time.

Analysis of Transactions:

Cash $56,000 ($410,000 - $354,000)

Accounts Receivable $22,000

Inventory $50,000

Rent Prepaid $2,000

Office Equipment $30,000

Accumulated Depreciation on Equipment $3,000

Accounts payable $30,000

Salaries Payable $5,000

Common Stock $50,000

Notes Payable $40,000

Interest Payable $3,600

Sales Revenue $342,000 ($320,000 + $22,000)

Cost of goods sold $200,000 ($220,000 + $30,000 - $50,000)

Salaries Expense $85,000 ($80,000 + $5,000)

Rent Expense $12,000 ($14,000 - $2,000)

Miscellaneous Expense $10,000

Interest Expense $3,600 ($40,000 x 12% x 9/12)

Depreciation Expense $3,000 ($30,000/10)

Adjusted Trial Balance

Account Titles                 Debit        Credit

Cash                             $56,000

Accounts Receivable    22,000

Inventory                       50,000

Rent Prepaid                   2,000

Office Equipment         30,000

Accumulated Depreciation:

  Office Equipment                        $3,000

Accounts payable                          30,000

Salaries Payable                              5,000

Common Stock                             50,000

Notes Payable                              40,000

Interest Payable                             3,600

Sales Revenue                           342,000

Cost of goods sold   200,000

Salaries Expense        85,000

Rent Expense              12,000

Miscellaneous Exp.     10,000

Interest Expense          3,600

Depreciation Expense 3,000

Totals                     $473,600  $473,600

Income Statement

Sales Revenue                                 $342,000

Cost of goods sold       $200,000

Salaries Expense            $85,000

Rent Expense                  $12,000

Miscellaneous Expense $10,000

Depreciation Expense     $3,000

Interest Expense              $3,600    $313,600

Net income                                        $28,400

Thus, before the balance sheet can be prepared, the general ledger must be summarized into an adjusted trial balance and an income statement that shows the net income.

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Mr. Heritage starts a new business, and to get it started he borrows $2 500 from a bank. If the loan is for two years, and the amount of interest for those two years is $175, what SIMPLE interest rate was he charged? (SIMPLE INTEREST: the principle and interest calculations dont change- they stay the same for the entire two year period!) BONUS- if he pays off the whole loan in the two years, what would his monthly bill be, (DON'T FORGET TO INCLUDE THE INTEREST CHARGE FOR HIS MONTHLY BILLS!!! YOU CAN ROUND YOUR CALCULATION TO THE NEAREST HUNDRETH- THAT IS, TO TWO DECIMAL PLACES...)​

Answers

The rate of interest is given by the equation R = 3.5 %

What is Simple Interest?

Simple interest is a method of calculating interest that ignores the impact of compounding. While interest frequently compounds throughout the course of a loan's set periods, simple interest does not. Simple interest is calculated by multiplying the principal amount by the interest rate, times the number of periods.

Simple Interest = ( Principal Amount x Rate x Time Period ) / 100

Given data ,

Let the rate of interest be represented as R

Now , the simple interest I = $ 175

The principal amount invested P = $ 2,500

The time period T = 2 years

Simple Interest = ( Principal Amount x Rate x Time Period ) / 100

Rate of Interest = (Simple Interest x 100 ) / Principal Amount x Time Period )

Substituting the values in the equation , we get

Rate of Interest R = ( 175 x 100 ) / ( 2500 x 2 )

Rate of Interest R = 17500 / 5000

Rate of Interest R = 3.5 %

Hence , the interest rate is 3.5 %

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PLSSS HELPP
IMAVE ATTACHED

Answers

Answer:

38[tex]\sqrt{3}[/tex]

Step-by-step explanation:

6[tex]\sqrt{5x5x3}[/tex] + 4[tex]\sqrt{2x2x3}[/tex]  We can pull out a pair of 5's and 2's

6(5) [tex]\sqrt{3}[/tex] + 4(2)[tex]\sqrt{3}[/tex]

30[tex]\sqrt{3}[/tex] + 8[tex]\sqrt{3}[/tex]

38[tex]\sqrt{3}[/tex]

Let f(x)=−|x−4|+4 and g(x)=1/2x−4. Graph the functions in the same coordinate plane. What are the solutions to f(x)=g(x)? Enter your answers in the boxes from smallest to largest.
x =
and x =

Answers

Answer:

Step-by-step explanation:

To find the solutions to f(x) = g(x), we need to find the values of x that make the two sides of the equation equal.The function f(x) = −|x−4| + 4 is a piecewise function. For x≤4, f(x) = −(x−4) + 4 = 4−x and for x>4, f(x) = (x−4) + 4 = x.The function g(x) = 1/2x − 4 is a linear function.When we graph these two functions in the same coordinate plane, we can see that they intersect at the point (4, 4) this point is the only solution where f(x) = g(x)so the solution of x = 4

x = 4

use substitution to solve the following system of equations.
4x+4y=16 AND y=x+2
( [?], [?])

Answers

The solution of the system of equations by using substitution method is x = 1 and y = 3

How to use substitution method to solve system of equations?

The substitution method is a method for solving systems of equations. It involves solving for one variable in one of the equations and then substituting that value into the other equation to find the value of the other variable.

We have the equations 4x + 4y = 16 and y = x+2

Substitute y = x +2 into  4x + 4y = 16:

4x + 4y = 16

4x + 4(x +2) = 16

Clear the parenthesis:

4x + 4x + 8 = 16

8x + 8 = 16

8x = 16-8

8x = 8

x = 8/8

x = 1

put x = 1 into  y = x+2:

y = x+2

y = 1 + 2

y = 3

Therefore, the solution of the system of equations is x = 1 and y = 3

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The fourth grade is going on a field trip and taking two buses. One bus has 3 rows of seats with 9 seats in each row the other bus has four times as many seat as the first bus. How many seats are there in both buses?

Answers

The number of seats of each bus is given as follows:

First bus: 27. Second bus: 108.

How to obtain the number of seats?

The number of seats of each bus is obtained applying the proportions in the context of the problem.

One bus has 3 rows of seats with 9 seats in each row, hence the number of seats of the first bus is given as follows:

3 x 9 = 27.

The other bus has four times as many seat as the first bus, hence the number of seats of the second bus is given as follows:

4 x 27 = 108.

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Please look at the picture and answer the question thank you

Answers

Answer: (-2, 10)

Explanation:

The left endpoint is -2. The right endpoint is 10. Both endpoints are open holes, which means we don't include them as part of the green-shaded solution region. If x is a solution, then the solution can be described as [tex]-2 < x < 10[/tex] converting to interval notation [tex](-2,10)[/tex] . The curly bracket says "do not include endpoint".

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What’s Ln(d)=n in exponential form?

Answers

Answer:

ln(d) = n can be rewritten in exponential form as d = e^n.

Step-by-step explanation:

The natural logarithm, denoted by ln, is the logarithm to the base e (approximately 2.718). The inverse of the natural logarithm function is the exponential function e^x. Therefore, when you take the natural logarithm of a number, you can raise e to the power of that number to get the original value.

ln(d) = n is the same as d = e^n

So, Ln(d)=n can be written as d = e^n

This is because e^n is the inverse function of Ln(d) and Ln(d)=n is the logarithm form of d = e^n

Find the coordinates of the intersection of the diagonals of the parallelogram with the vertices
W(-2,5), X(2, 5), Y(4, 0), and Z(0, 0).

The coordinates of the intersection are ( , )

Answers

Step-by-step explanation:

the intersection of the diagonals of a parallelogram is always the middle point of either of the diagonals.

so, all we need to do is identify a diagonal and find is middle point.

a diagonal is e.g. from all the way on the left and up (-2, 5) to all the way right and down (4, 0).

the middle point between 2 points is

((x1 + x2)/2, (y1 + y2)/2)

so, here

((-2 + 4)/2, (5 + 0)/2) = (1, 2.5)

the coordinates of the intersection are (1, 2.5).

How many terms are in this expression?
2b+6

Answers

There are two terms, 2b and 6

Answer:

There are two terms in the expression

Step-by-step explanation:

2b is one term since it is multiplied together, and 6 is by itself and is the second term

K
Round to the nearest given place.
1.80642 thousandths
I need help this homework please

Answers

Answer:

1.806 (to the nearest thousandth)

Step-by-step explanation:

1.806 (to the nearest thousandth)

The number 1.80642 would round down to 1.806

What is rounding a number to some specific place?

Rounding some number to a specific value is making its value simpler (therefore losing accuracy), mostly done for better readability or accessibility.

Rounding to some place keeps it accurate on the left side of that place but rounded or sort of like trimmed from the right in terms of exact digits.

We need to round  1.80642 to the nearest hundredth,

We can see that the 1.80642 is below 2 so it goes down, and it rounds down to 1.80642 instead of, 14.62 then that would round up to the decimal is higher than 1.

1.80642 rounded to the nearest thousandth is 1.806.

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Graph the function m(x) = x + 1

Answers

When the function, m ( x)  = x + 1 is graphed, the result is shown attached.

How to graph a function ?

When graphing a function, you need to remember that x is the independent variable. This means that you need to come up with the values of x and then use these values to come up with the corresponding values of y or m (x ) using the function.

Assuming you have values of x which are -3, -2, -1, 0, 1, 2, 3, the values of y would be:

x = - 3:
= x + 1

= - 3 + 1

= -2

x = - 2

= - 2 + 1

= - 1

x = - 1

= - 1 + 1

= 0

x = 0:

= 0 + 1

= 1

x = 1 :

= 1 + 1

= 2

x = 2 :

= 2 + 1

= 3

x = 3 :

= 3 + 1

= 4

The points would then be:
( - 3, - 2) , ( - 2, - 1) , ( - 1 , 0 ) ( 0, 1 ) ( 1, 2 ) ( 2, 3 ) ( 3, 4 )

The graph would be shown as attached.

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what's th y intercept of y=6(x-1/2)(x+3)

Answers

to get the y-intercept of any equation we can simply set x = 0 and solve for "y", so let's do so

[tex]y=6\left( x-\cfrac{1}{2} \right)(x+3)\implies \stackrel{\textit{setting x = 0}}{y=6\left( 0-\cfrac{1}{2} \right)(0+3)}\implies y=6\left( -\cfrac{1}{2} \right)(3) \\\\\\ y=(-3)(3)\implies y=-9\hspace{12em} {\Large \begin{array}{llll} \stackrel{y-intercept}{(0~~,~~-9)} \end{array}}[/tex]

Slopes of parallel/Purpendicular lines - What is the slope of a line parallel to the line whose equation is x + 2y = -14

Answers

Answer:    -1/2

Explanation:

First we solve for y.

x + 2y = -14

2y = -14 - x

2y = -x - 14

y = (-x - 14)/2

y = -x/2 - 14/2

y = (-1/2)x - 7

The equation is in slope intercept form y = mx+b

m = -1/2 = slopeb = -7 = y intercept

Parallel lines have equal slopes, but different y intercepts. This means the slope of any line parallel to this given one will have a slope of -1/2

For example, y = (-1/2)x + 10 is parallel to y = (-1/2)x - 7, since both have the same slope of -1/2 but different y intercepts.

Find the domain of fg f(x) = x + 2 g(x) =1/x + 2

Answers

Answer:

x+2 domain: (-infiniy, +infinity) or -infinity<x<infinity

1/x +2 domain: (-infinity, 0) and (0, infinity) or 0<x<0

What is the slope of the line shown below?

(1,6) (-5,-7)

A. 13/6
B. -13/6
C. -6/13
D. 6/13

Answers

[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{6})\qquad (\stackrel{x_2}{-5}~,~\stackrel{y_2}{-7}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-7}-\stackrel{y1}{6}}}{\underset{\textit{\large run}} {\underset{x_2}{-5}-\underset{x_1}{1}}} \implies \cfrac{ -13 }{ -6 } \implies \cfrac{13 }{ 6 }[/tex]

Rationalize the denominator and simplify the following expression:

fraction numerator 4 plus square root of 2 over denominator 2 space minus square root of 2 end fraction


5 plus 3 square root of 2


10 plus 6 square root of 2


2 plus 6 square root of 2


2 plus 3 square root of 2

Answers

Answer:

[tex]\textsf{A)} \quad 5+3\sqrt{2}[/tex]

Step-by-step explanation:

Given rational expression:

[tex]\dfrac{4+\sqrt{2}}{2 -\sqrt{2}}[/tex]

To rationalise the denominator, multiply both the numerator and denominator by the conjugate of the denominator.

The conjugate of an expression is where we change the sign in the middle of the two terms.  Therefore, the conjugate of the denominator of the given expression is:

[tex]2 + \sqrt{2}[/tex]

Multiply the numerator and denominator by the conjugate of the denominator:

[tex]\implies \dfrac{4+\sqrt{2}}{2 -\sqrt{2}} \cdot \dfrac{2 +\sqrt{2}}{2 +\sqrt{2}}[/tex]

Simplify:

[tex]\implies \dfrac{(4+\sqrt{2})(2 +\sqrt{2})}{(2 -\sqrt{2})(2 +\sqrt{2})}[/tex]

[tex]\implies \dfrac{8+4\sqrt{2}+2\sqrt{2}+\sqrt{2}\sqrt{2}}{4+2\sqrt{2}-2\sqrt{2}-\sqrt{2}\sqrt{2}}[/tex]

[tex]\implies \dfrac{8+6\sqrt{2}+2}{4-2}[/tex]

[tex]\implies \dfrac{10+6\sqrt{2}}{2}[/tex]

Reduce to its simplest form by dividing the numerator and the denominator by 2:

[tex]\implies 5+3\sqrt{2}[/tex]

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