Question

Assertion
(A): 100 ml of Hydrogen combines with 100 ml of Oxygen to form 100 ml of Water vapour
Reason(R):When gases combine or are produced in a chemical reaction they do so in a simple ratio by volume

(i)Both A and R are true but R is not the correct explanation of A.
(ii)A is true but R is false
(iii)A is false but R is true
(iv)Both A and R are false

Answer 1

Answer:Answer

k = ± 9.69

Given

α and β are the zeroes of quadratic polynomial x² - kx + 15

such that  ( α² + β² ) - 2αβ = 34 .

To Find

Value of k

Solution

Given quadratic polynomial is x² - kx + 15

Compare given equation with ax² + bx + c , we get ,

a = 1 , b = - k , c = 15

Also given α , β are zeroes of the quadratic equation .

Step-by-step explanation:

Answer 2

Answer:

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