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Standard VIII

Mathematics

Solving Equations with Linear Expressions on One Side and Numbers on the Other Side

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Question

Question 11

In the following question out of the four options only one is correct, write the correct answer.

The value of S in $\frac{1}{3} + S = \frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(c) 10

(d) 0

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Solution

Given, $\frac{1}{3} + S = \frac{2}{5} \Rightarrow S = \frac{2}{5} - \frac{1}{3} \Rightarrow S = \frac{6 - 5}{15} ∴ S = \frac{1}{15}$

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Question 11

In the following question out of the four options only one is correct, write the correct answer.

The value of S in $\frac{1}{3} + S = \frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(d) 0

In the following question out of the four options only one is correct, write the correct answer.

The value of S in $\frac{1}{3} + S = \frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(d) $0$

Question 14

Out of the four options, only one is correct. Write the correct answer.

The value of $3 x^{2} - 5 x + 3,$ when x = 1 is

(a) 1
(b) 0
(c) -1
(d) 11

Question 11

In the following question, out of the four options, only one is correct. Write the correct answer:

The multiplicative inverse of ${(- \frac{5}{9})}^{- 99}$ is:
(a) ${(- \frac{5}{9})}^{99}$
(b) ${(\frac{5}{9})}^{99}$
(c) ${(- \frac{9}{- 5})}^{99}$
(d) ${(- \frac{9}{5})}^{99}$

Question 3

In the following question, out of the four options, only one is correct. Write the correct answer:

$3^{- 2}$ can be written as:
(a) $3^{2}$
(b) $\frac{1}{3^{2}}$
(c) $\frac{1}{3^{- 2}}$
(d) $- \frac{2}{2}$

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Solving Equations with Linear Expressions on One Side and Numbers on the Other Side

Standard VIII Mathematics

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Question 11 In the following question out of the four options only one is correct, write the correct answer. The value of S in 13+S=25 is : (a) 45 (b) 115 (c) 10 (d) 0

Given, 13+S=25⇒S=25−13⇒S=6−515∴S=115

Question 11

In the following question out of the four options only one is correct, write the correct answer.

The value of S in $\frac{1}{3} + S = \frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(c) 10

(d) 0

Given, $\frac{1}{3} + S = \frac{2}{5} \Rightarrow S = \frac{2}{5} - \frac{1}{3} \Rightarrow S = \frac{6 - 5}{15} ∴ S = \frac{1}{15}$