If 2017x-2017-2018y-2018-2019z-2019-2015- then xx-2017-yy-2018-zz-2019 equals -

The correct option is B 2018 [ 2017 x+2017 + 2018 y+2018 + 2019 z+2019 = 2015 and #160; x x+2017 + y y+2018 + z z+2019 =y ( let ) ...

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Byju's Answer

Standard XI

Mathematics

Properties of Modulus

If 2017x+20...

Question

If $\frac{2017}{x + 2017} + \frac{2018}{y + 2018} + \frac{2019}{z + 2019} = - 2015$ , then
$\frac{x}{x + 2017} + \frac{y}{y + 2018} + \frac{z}{z + 2019}$ equals ?

2017

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2018

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2019

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2016

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Solution

The correct option is B $2018$
$\begin{matrix} \frac{2017}{x + 2017} + \frac{2018}{y + 2018} + \frac{2019}{z + 2019} = - 2015 a n d \frac{x}{x + 2017} + \frac{y}{y + 2018} + \frac{z}{z + 2019} = y (l e t) b y a d d i n g t h e s e t w o - 1 + 1 + 1 = y - 2015 3 = y - 2015 y = 3 + 2015 y = 2018 O p t i o n B i s c o r r e c t a n s w e r . \end{matrix}$

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Similar questions

The remainder when the determinant

∣ ∣ ∣ ∣ ∣ \begin{matrix} 2014^{2014} & 2015^{2015} & 2016^{2016} 2017^{2017} & 2018^{2018} & 2019^{2019} 2020^{2020} & 2021^{2021} & 2022^{2022} \end{matrix} ∣ ∣ ∣ ∣ ∣

is divided by

5

is.

The remainder when the determinant

$∣ ∣ ∣ ∣ ∣ \begin{matrix} 2014^{2014} & 2015^{2015} & 2016^{2016} 2017^{2017} & 2018^{2018} & 2019^{2019} 2020^{2020} & 2021^{2021} & 2022^{2022} \end{matrix} ∣ ∣ ∣ ∣ ∣$

is divided by 5 is.

Q. The remainder when the determinant

∣ ∣ ∣ ∣ ∣ \begin{matrix} 2014^{2014} & 2015^{2015} & 2016^{2016} 2017^{2017} & 2018^{2018} & 2019^{2019} 2020^{2020} & 2021^{2021} & 2022^{2022} \end{matrix} ∣ ∣ ∣ ∣ ∣

is divided by

5

Q. The population of rabbits over a duration in a zoo is tabulated as follows:
Year Population of Rabbit
(in thousand)

2015	3
2016	5
2017	6
2018	7
2019	8
2020	9

Choose the line graph that correctly depicts the data set.

Q. On 1st July, 2015, A Co. Ltd. purchases second-hand machinery for ₹ 20,000 and spends ₹ 3,000 on reconditioning and installing it. On 1st January, 2016, the firm purchases new machinery worth ₹ 12,000. On 30th June, 2017, the machinery purchased on 1st January, 2016, was sold for ₹ 8,000 and on 1st July, 2017, a fresh plant was installed. Payment for this plant was to be made as follows:

1st July, 2017	₹ 5,000
30th June, 2018	₹ 6,000
30th June, 2019	₹ 5,500

Payments in 2018 and 2019 include interest of ₹ 1,000 and ₹ 500 respectively.
The company writes off 10% p.a. on the original cost. The accounts are closed every year on 31st March. Show the Machinery Account for the year ended 31st March, 2018.

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If 2017x+2017+2018y+2018+2019z+2019=−2015, then xx+2017+yy+2018+zz+2019 equals ?

The correct option is B 20182017x+2017+2018y+2018+2019z+2019=−2015andxx+2017+yy+2018+zz+2019=y(let)byaddingthesetwo−1+1+1=y−20153=y−2015y=3+2015y=2018OptionBiscorrectanswer.

If $\frac{2017}{x + 2017} + \frac{2018}{y + 2018} + \frac{2019}{z + 2019} = - 2015$ , then
$\frac{x}{x + 2017} + \frac{y}{y + 2018} + \frac{z}{z + 2019}$ equals ?