Question

please answer it is urgent

only for mystical answerer​

Answer 1

Answer:

Step-by-step explanation:

8 answer option a

Answer 2

$\huge{\underline{\underline{\mathfrak{Answer :}}}}$

$\Large{\rm{Question \ 6 :}}$

A quadratic binomial is a second degree binomial,

So, A.T.Q

$\sf{\rightarrow (x + 2)(x - 2)} \\ \sf{\rightarrow x^2 \cancel{- 2x} \cancel{+ 2x} - 4} \\ \sf{\rightarrow x^2 - 4}$

$\therefore$ Option B is the correct answer.

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$\Large{\rm{Question \ 7 :}}$

$\sf{\rightarrow 2x + 5 = 45° \ \ \ \ \ \ (Vertical \ opposite \ angles)} \\ \sf{\rightarrow 2x = 45 - 5} \\ \sf{\rightarrow 2x = 40} \\ \sf{\rightarrow x = \dfrac{\cancel{40}}{\cancel{2}}} \\ \sf{\rightarrow x = 20°}$

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$\Large{\rm{Question \ 8 :}}$

For a point to lie on the Y-axis, its abscissa i.e. distance from Y-axis = 0.

So, A.T.Q

Option B is the correct answer.

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$\Large{\rm{Question \ 9 :}}$

Volume of cylinder = πr²h

$\sf{\rightarrow Volume = \pi \times 5² \times 4 } \\ \sf{\rightarrow Volume = \pi \times 25 \times 4} \\ \sf{\rightarrow Volume = 100 \pi cm^3}$

$\therefore$ Option D is the correct answer.

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$\Large{\rm{Question \ 10 :}}$

The measure of each exterior angle of a regular pentagon is 72°.

$\therefore$ Option C is the correct answer.