Question

Q1 ) subtract the sum of 12 in -11 from -23
Q2) Rahim buys a book and 10 and pay rupees 60 for both the book cost Rs 18 more than the cost of pen find the cost of the book ?
Q3) Is in the picture .. ​

Answer 1

Answer: Q1) -24

Q2) Rs 39

Q3) a) 3

Q3) b) 7m

Step by step explanation:

Q1) The sum of 12 and - 11

= 12 + (-11) = 12 - 11 = 1

The is to be subtracted from -23

= - 23 - 1

= - 24

Answer : -24

Q2) Let the cost of a pen be Rs x

The cost of the book = Rs 18 + x

Total amount = Rs 60

Equation : x + 18 + x = 60

2x + 18 = 60

2x = 60 - 18

2x = 42

x = 42/2

x = 21

The cost of a pen = x = Rs 21

The cost of book = 18 + x = 18 + 21 = Rs 39

Q3) a) p(x) = x² - x + 1

If x = 2,

p(2) = 2² - 2 + 1

p(2) = 4 - 2 + 1

p(2) = 4 + 1 - 2

(by BODMAS rule)

p(2) = 5 - 2

p(2) = 3

Answer : 3

Q3) b)

The original length of card board = y

it was divided into 2 parts

Length of 1st part = 5m

Length of 2nd part = 3y - 19

Equation : y = 3y - 19 + 5

y - 3y = -19 + 5

-2y = -14

y = -14 / -2

y = 7

Hence, the original length of the cardboard = y = 7m

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Answer 2

Answer:

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