Consider the equation as shown:
(x-a)(y-b) = (x-2a)(y- b/2)

x(x + 1/2b) + y(y + a/2) -2xy = 5+(x-y)²

On comparing the coefficient, a student says these pairs of equations is consistent. Is he/she correct? Which of these explains why?
(a) Yes; because they are parallel lines.
(b) No; because they are interesting lines.
(c) Yes; because they are parallel lines.
(d) No; because they are interesting lines.​

Answers

Answer 1

[tex]\large\underline{\sf{Solution-}}[/tex]

First equation is

[tex]\rm \longmapsto\:(x - a)(y - b) = (x - 2a)\bigg(y -\dfrac{b}{2}\bigg) [/tex]

can be further simplified to

[tex]\rm \longmapsto\:xy - bx - ay + ab = xy - \dfrac{bx}{2} - 2ay + ab[/tex]

[tex]\rm \longmapsto\: - bx - ay = - \dfrac{bx}{2} - 2ay [/tex]

[tex]\rm \longmapsto\: - bx + \dfrac{bx}{2} = - 2ay + ay[/tex]

[tex]\rm \longmapsto\: - \dfrac{bx}{2} = - ay[/tex]

[tex]\rm \longmapsto\: \dfrac{bx}{2} = ay[/tex]

[tex]\rm \longmapsto\:bx = 2ay[/tex]

[tex]\rm:\longmapsto \:\boxed{\tt{ bx - 2ay = 0}} - - - - (1)[/tex]

Second equation is

[tex]\rm \longmapsto\:x\bigg(x + \dfrac{1}{2b} \bigg) + y \bigg(y + \dfrac{a}{2}\bigg) - 2xy = 5 + {(x - y)}^{2} [/tex]

[tex]\rm \longmapsto\: {x}^{2} + \dfrac{x}{2b} + {y}^{2} + \dfrac{ay}{2} - 2xy = 5 + {x}^{2} + {y}^{2} - 2xy[/tex]

[tex]\rm \longmapsto\: \dfrac{x}{2b} + \dfrac{ay}{2} = 5[/tex]

[tex]\rm \longmapsto\: \dfrac{x + aby}{2b} = 5[/tex]

[tex]\rm :\longmapsto\:\boxed{\tt{ x + aby = 10b}} - - - (2)[/tex]

So, we have two equations in simplest form as

[tex]\rm \longmapsto\:bx - 2ay = 0 [/tex]

and

[tex]\rm \longmapsto\:x + aby = 10b[/tex]

Now, Consider

[tex]\rm \longmapsto\:\dfrac{a_1}{a_2} = \dfrac{b}{1} = b[/tex]

[tex]\rm \longmapsto\:\dfrac{b_1}{b_2} = \dfrac{ - 2a}{ab} = - \dfrac{2}{b} [/tex]

[tex]\bf\implies \:\dfrac{a_1}{a_2} \: \ne \: \dfrac{b_1}{b_2} [/tex]

This implies, System of equations is consistent having unique solution.

So, The student is correct as lines are intersecting.

So, option (b) is correct.


Related Questions

NO LINKS!!! Part 2:

[tex]y = \sqrt{x} [/tex]
Shape:
Domain:
Range:​

Answers

Given:

A square toot function y = √x

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

Shape: half of a parabola

Domain: Non- negative numbers x∈ [0, +∞)

Range:​ Non- negative numbers y∈ [0, +∞)

oh god please help I have no idea what this is

Answers

Answer:

1. 10/7, 2/1, 1,5

2. 5/8 * 3/2

Step-by-step explanation:

(:

Answer:

Which part exactly.. Or which number exactly

48 cookies; 50% increase​

Answers

Answer:

72

Step-by-step explanation:

48÷2= 24

48+24= 72

Hope this helps! :)

Answer:

its 72.00

Step-by-step explanation:

48.00 increased by 50% is 72.00

The increase is 24.00

f(x)=8x-5 when x=-1, x=2, and x=3
Evaluate​

Answers

Answer:

-13, 11, 19

Step-by-step explanation:

You will plug in the numbers for x in each equation so you will have three equations:

1. 8(-1)-5

2. 8(2)-5

3. 8(3)-5

Solve these equations and you will get

1. -13

2. 11

3. 19

Allowance method entries

The following transactions were completed by Wild Trout Gallery during the current fiscal year ended December 31:

Jan. 19. Reinstated the account of Arlene Gurley, which had been written off in the preceding year as uncollectible. Journalized the receipt of $2,560 cash in full payment of Arlene’s account.
Apr. 3. Wrote off the $14,670 balance owed by Premier GS Co., which is bankrupt.
July 16. Received 25% of the $26,300 balance owed by Hayden Co., a bankrupt business, and wrote off the remainder as uncollectible.
Nov. 23. Reinstated the account of Harry Carr, which had been written off two years earlier as uncollectible. Recorded the receipt of $4,175 cash in full payment.
Dec. 31. Wrote off the following accounts as uncollectible (compound entry): Cavey Co., $11,035 ; Fogle Co., $3,275 ; Lake Furniture, $ 8,420 ; Melinda Shryer, $2,380.
Dec. 31. Based on an analysis of the $1,299,500 of accounts receivable, it was estimated that $56,500 will be uncollectible. Journalized the adjusting entry.
Required:

1. Record the January 1 credit balance of $53,800 in a T account presented below in requirement 2b for Allowance for Doubtful Accounts.

2. a. Journalize the transactions. If an amount box does not require an entry, leave it blank. Note: For the December 31 adjusting entry, assume the $1,299,500 balance in accounts receivable reflects the adjustments made during the year.
2. b. Post each entry that affects the following T accounts and determine the new balances:
3. Determine the expected net realizable value of the accounts receivable as of December 31 (after all of the adjustments and the adjusting entry).
$fill in the blank 73711efa1fe301a_1
2,290,000

4. Assuming that instead of basing the provision for uncollectible accounts on an analysis of receivables, the adjusting entry on December 31 had been based on an estimated expense of ½ of 1% of the sales of $8,020,000 for the year, determine the following:

a. Bad debt expense for the year.
b. Balance in the allowance account after the adjustment of December 31.

c. Expected net realizable value of the accounts receivable as of December 31 (after all of the adjustments and the adjusting entry).

Answers

Using the Allowance Method, the relevant transactions can be completed in the books of Wild Trout Gallery as follows:

1. Allowance for Doubtful Accounts

Accounts                                          Debit       Credit

Jan. 1 Beginning balance                             $53,800

Jan. 19 Accounts Receivable                           2,560

Apr. 3 Accounts Receivable       $14,670

July 16 Accounts Receivable        19,725

Nov. 23 Accounts Receivable                         4,175

Dec. 31 Accounts Receivable       25,110

Dec. 31 Ending balance          $56,500

Dec. 31 Bad Debts Expenses                   $55,470

Totals                                        $116,005  $116,005

Accounts Receivable

Accounts                                          Debit               Credit

Jan. 1 Beginning balance           $2,290,000

Jan. 19 Allowance for Doubtful           2,560

Jan. 19 Cash                                                            $2,560

Apr. 3  Allowance for Doubtful                                14,670

July 16  Allowance for Doubtful                              19,725

July 16  Cash                                                             6,575

Nov. 23  Allowance for Doubtful         4,175

Nov. 23 Cash                                                             4,175

Dec. 31  Allowance for Doubtful                             25,110

Dec. 31   Sales Revenue            8,020,000

Dec. 31   Cash                                               $8,944,420

Dec. 31 Ending balance                                 $1,299,500

Totals                                        $10,316,735 $10,316,735

3. Expected net realizable value of the accounts receivable as of December 31 = $1,243,000 ($1,299,500 - $56,500)

Allowance for Doubtful Accounts ending balance = $40,100 ($8,020,000 x 0.5%)

Allowance for Doubtful Accounts

Accounts                                          Debit       Credit

Jan. 1 Beginning balance                             $53,800

Jan. 19 Accounts Receivable                           2,560

Apr. 3 Accounts Receivable       $14,670

July 16 Accounts Receivable        19,725

Nov. 23 Accounts Receivable                         4,175

Dec. 31 Accounts Receivable       25,110

Dec. 31 Ending balance           $40,100

Dec. 31 Bad Debts Expenses                  $39,070

Totals                                        $99,605   $99,605

4. a. Bad Debt Expense for the year = $39,070

4.b. Balance for Allowance Accounts = $40,100

4.c. Expected net realizable value of the accounts receivable = $1,259,400 ($1,299,500 - $40,100)

Data Analysis:

Jan. 19 Accounts Receivable $2,560 Allowance for Uncollectible Accounts $2,560

Jan. 19 Cash $2,560 Accounts Receivable $2,560

Apr. 3 Allowance for Uncollectible Accounts $14,670 Accounts Receivable $14,670

July 16 Cash $6,575 Allowance for Uncollectible Accounts $19,725 Accounts Receivable $26,300

Nov. 23 Accounts Receivable $4,175 Allowance for Uncollectible Accounts $4,175

Nov. 23 Cash $4,175 Accounts Receivable $4,175

Dec. 31 Allowance for Uncollectible Accounts $25,110 Accounts Receivable $25,110

Accounts Receivable ending balance = $1,299,500

Allowance for Uncollectible Accounts ending balance = $56,500

Learn more: https://brainly.com/question/22984282

Tyson can type 49 words per minute. How long will it take him to type a 1000-word essay?

Answers

Answer:

20.4minutes

Step-by-step explanation:

Duration= Number of words/Typing speed

Duration= 1000/ 49 per min

= 20.4minutes

Hope this helped you- have a good day bro cya)

297,060 ÷ 0.0004839 =

Answers

Answer:

613,887,166.76999

Step-by-step explanation:

hshsididodj bdnd

dbdbjdjd

nsbbdbd

bdbbdhd

Answer:

[tex]297,060 ÷ 0.0004839 =613887166.77[/tex]

What is the distance from the point (-6, 2) to the point (2, 17)
19.21 units
15.13 units
17.00 units
19.10 units
20.62 units

Answers

Answer:

17

Step-by-step explanation:

sqrt((2-(-6))^2+(17-2)^2)

help me please please

Answers

Answer:

though the answers given don't make sense. the best given answer is A. angle 3 should be 113 instead of 103

PLEASE HELP ASAP I WILL GIVE BRAINLIEST AND 100pts!!!!!!!!!!!!!!!!!!!!!!!!!!

he following histogram shows the number of items sold at a grocery store at various prices:

Histogram titled Items Sold with Price Range on the x axis and Number of Items Sold on the y axis. Bar 1 is 0 to 2 dollars and 50 cents and has a height of 2. Bar 2 is 2 dollars and 51 cents to 5 dollars and has a height of 4. Bar 3 is 5 dollars and 1 cent to 7 dollars and 50 cents and has a height of 0. Bar 4 is 7 dollars and 51 cents to 10 dollars and has a height of 1.

Which of the following data sets is represented in the histogram?

{0.50, 2.00, 2.52, 3.37, 4.53, 5.00, 8.99}
{2, 4, 0, 1}
{2.50, 2.51, 5.00, 5.01, 7.50, 9.00, 10.00}
{0.50, 2.50, 2.50, 5.00, 5.00, 5.00, 7.51}

Answers

Answer:

will this help?

Answer:

A.

Step-by-step explanation:

If the interest earned is $96.00 at a rate of 4% for 6 years, how much principal was invested? step by step equation please ​

Answers

Wouldn’t it be $400.00
P=96/(0.04*6)=400
P=$400.00

A train travels at 100 miles per hour. Write an equation that compares the time (t) with the distance (d).

t = 100d

d = 100t

d = t + 100

t = d + 100

Answers

Answer: d = 100t

Hope this helps!

Answer:

d = 100 * t

Step-by-step explanation:

    d

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

S    l    t

distance = d

time = t

speed = 100miles/h

d = 100 * t

IF YOU ARE REALLY GOOD A MATH THEN PLEASE ANSWER THIS !!!
Your help will be much appreciated because i am losing my sanity doing this math

Answers

speed = 330/6 = 55 mph

Answer:

55mph

Step-by-step explanation:

average speed=330/6=55mph

solve in step wise.

Answers

Ahh yes so u have to solve for x then substitute and subtract ur x and y coordinates so u can find the domain and range properly.

Find the value of x
(Please please please help me I will give you brainliest!)

Answers

Answer:

55

Step-by-step explanation:

rectangular triangle

180-(35+90)=55

Answer:

55

Step-by-step explanation:

midpoint of (-1, -1, and (-11,10)

Answers

Answer:

(-6, 4.5)

Step-by-step explanation:

Answer:

ki

Step-by-step explanation:

Click on the graph to draw a trapezoid with right angles at (0, -7) and (8,−7), another vertex at (8,0), and a vertical base of 16 units

Answers

Answer: (0, -7) (8, -7) (8, 0) (0, 9) (0, -7)

Step-by-step explanation: It already tells you three of the coordinates. From plotting those, just create a vertical line from (0, -7) up that is equal to 16 and connect that coordinate with (8, 0).

work out the value of 5(x-y)

Answers

Answer:

5x - 5y

Step-by-step explanation:

Answer:

5x-5y or x=y.

Step-by-step explanation:

If 5(x-y) then we can distribute that, right?

then that turns into 5x-5y, lets say that equals zero, since there is no other information. Then 5x-5y=0 and wecould add 5y to both sides, getting 5x=5y

dividing 5x=5y/5 we get x=y.

3010 divided by .20 = ?

Answers

Answer:

15050

Step-by-step explanation:

Answer:

15050

Step-by-step explanation:

State if the triangle are congruent by sss sas asa aas or not congruent

Answers

I believe they are congruent by SAS. I hope this helps :)

6 is 15% of what number

Answers

40 is the answer 15% of 40=6

Express the following quentitis as ratio 10k to 50k

Answers

Answer:

watch me whipzdudbbd iv ex

Plz help I need help

Answers

Answer:

proportional

Step-by-step explanation:

hope this helps

Let's try it! If we set these two ratios equal to each other and cross-multiply, the results should be the same if they are, in fact, proportional.

8/20 = 20/80

400 ? 640

400 and 640 are not the same number, so these ratios are not proportional.

Hope this helps!! :)

Giải giúp mình với ạ

Answers

Answer:

answer is b

Step-by-step explanation:

7. A fundraising group charges $0.25 per cookie and has a daily expense of $18. Which of the
following describes the steps that need to be taken, in order to calculate the daily profit,
when selling 49 cookies? Please just tell me how to answer it not the answer

Answers

Answer:

Look below

Step-by-step explanation:

To answer the question, you have to find out how much 49 sold cookies amounts to, so multiply 49 by however much it is per cookie.

Then, subtract the daily expense, $18, by the number you got from the total amount earned from the cookies sold, and that number would show the daily profit earned by selling 49 cookies.

Hope this helps :)

what is 160% of 80kg

Answers

Answer:

128kg

Step-by-step explanation:

I don't know how to explain it here the answer

Answer:

128

Step-by-step explanation:

160%=1.60

1.60*80=128

OT
The blueprint for Audrey's new room has a
scale that states every inch is actually equal
to 15 inches. If this blueprint shows the length
of her new room to be 3 inches, what will be
the actual length of her new room?

Answers

Answer:

I really need points

Good luck with your question tho

Find the radius of the circle.
3(x – 5)^2 + 3(y + 9)^2 = 48
(?,?)​

Answers

Answer: radius = 4

Step-by-step explanation:

The equation of circle is [tex](x - h)^{2} +(y - k)^{2} =r^{2}[/tex]

So [tex]3((x-5)^{2}+ (y+9)^{2} )=48[/tex]

[tex](x-5)^{2}+(y+9)^{2}=16[/tex]

So [tex]r^{2} = 16[/tex]

[tex]r=4[/tex]

Please give me a brainliest answer

what is the height if a painting is 1 centimeters and represents as 9 inches

Answers

Answer:

The height of the real painting is 36 inches

How would I show my work for this?

Answers

Answer:

4x4 = 16  √16=4

Step-by-step explanation:

Answer:

sqrt (16)

= sqrt (4×4)

= 4

Step-by-step explanation:

brainliest plz

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