Question

Case study based questions of Math​

Answer 1

Explanation:

Given, rainwater is collected in the under ground tank at the rate of 30 cm^3/s.

[ °.° Volume of water collected in x seconds and as y cm^3. ]

⇒ 30 × y/x

⇒ y = 30x

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(I) Write a lineas equation according to given question.

⇒ (B) y = 30x

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(II) Write it in standard form as ax + by + c = 0.

⇒ (B) 30x - y + 0 = 0

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(III) Value of (a + b + c) is.

Equation, 30x - y + 0 = 0

On comparing with, ax + by + c = 0,

⇒ a = 30 , b = -1 , c = 0

We ask to find the value of (a + b + c),

⇒ (30 + (-1) + 0)

⇒ (30 - 1)

⇒ 29

⇒ (a) 29

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(IV) If x = 2, then y = ?

y = 30x { Given }

⇒ y = 30 × 2

⇒ y = 60

⇒ (a) 60

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(V) If y = 120 , then x = ?

y = 30x { Given }

⇒ 120 = 30 × x

⇒ x = 120/30

⇒ x = 4

⇒ (c) 4

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