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Solving an Equation

If n=8 and ...

Question

If $n = 8$ and $16 - 2 m = 4 n - 8$ , then $m =$ ?

A

- 4

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B

- 1

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C

0

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D

8

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Solution

The correct option is B $- 4$
Given, $16 - 2 m = (4 n - 8)_{n = 8}$
$\Rightarrow 16 - 2 m = 32 - 8$
$\Rightarrow 16 - 2 m = 24$
$\Rightarrow - 8 = 2 m$
$\Rightarrow m = - 4$

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Similar questions

Q. The value of m if :

4^{2 m} = (3 \sqrt{16})^{- \frac{6}{n}} = (\sqrt{8})^{2}

m = \frac{3}{4}

If true then enter

1

and if false then enter

0

x and y

are directly related, then, find

l, m and n

$x$	$8$	$4$	$l$	$16$
$y$	$4$	$m$	$32$	$n$

x and y

are directly related, then, find

l, m and n

$x$	$16$	$4$	$l$	$8$
$y$	$4$	$m$	$8$	$n$

x and y

are inversly related, then, find

l, m and n

$x$	8	4	$l$	16
$y$	8	$m$	32	$n$

\frac{2^{m - 3}}{4^{2 m}} = 8

2 m - 1

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