The equation for the statement:"half a number added to 10 is 15".

\frac{X}{2} + 10 + 5

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\frac{X}{2} + 10 = 5

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\frac{X}{2} + 15 = 10

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\frac{X}{2} = - 10 + 15

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Solution

The correct option is D $\frac{X}{2} = - 10 + 15$
Let the number be $X .$
Half of the number is $\frac{X}{2}$
Half a number added to $10$ is $\frac{X}{2} + 10$
So, according to the question,
$\Rightarrow$ $\frac{X}{2} + 10 = 15$

$\Rightarrow$ $\frac{X}{2} = - 10 + 15$

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Find the equation of the tangents drawn form the point (5,3) to the hyperbola $\frac{x^{2}}{25} - \frac{y^{2}}{9} = 1.$

$X$	$0 - 5$	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$
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