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2 years ago

This is hard please help it makes no sense

Mathematics

2 answers:

posledela2 years ago

8 0

We will find the length of DE using trigonometric ratios. And the trigonometric ratio we will use here is

$\sf \tan( \theta) = \frac{opposite}{adjacent}$

Opposite = 17 m
Adjacent = DE
θ = 51°

$\tt \tan(51°) = \frac{17}{x}$

$\tt \tan(51°) \times x = 17$

$\tt \: x = \frac{17}{ \tan(51°) }$

$\tt \: x≈13.766$

$\boxed{ \sf \: x≈13.8 \: (when \: rounded \: off)}$

<em>Thus, Option C is the correct choice!!~</em>

tigry1 [53]2 years ago

3 0

Answer:

lk12

Step-by-step explanation:

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seropon [69]

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First Option is correct.

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Step-by-step explanation:

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The given factor is.

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$f(x)=x[(x+2)(x-2)]+(x+2)(x-12)$

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$f(x)=(x+2)[x(x-2)+(x-12)]$

Simplify.

$f(x)=(x+2)[x^{2}-2x+x-12]$

$f(x)=(x+2)(x^{2}-x-12)$

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$f(x)=(x+2)(x-4)(x+3)$

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