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4 years ago

3.75x = 3 how to do this, please help.

Mathematics

2 answers:

Alexeev081 [22]4 years ago

4 0

Answer:

Here, invert the multiple of x and draw the other side, and multiply in the following equation to obtain the value of x.

Step-by-step explanation:

$3.75x = 3 \\ x = \frac{3}{3.75} \\ x = \frac{300}{375} \\ \\ x = \frac{4}{5} \\ \\ x = 0.8$

Travka [436]4 years ago

3 0

Answer:

0.8

Step-by-step explanation:

you divide both sides by 3.75 (because its multiplied) so the 3.75 connected to the x cancels out and your left with x on the left and 3 over 3.75 equals 0.8 so its x = 0.8

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3 years ago

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First, recall that

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So if $\sin(-\theta)=\dfrac15$ , then $\sin\theta=-\dfrac15$ .

Second,

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$

We know that $\tan\theta>0$ and $\sin\theta$ , which means we should also have $\cos\theta$ .

Third,

$\sin^2\theta+\cos^2\theta=1\implies\cos\theta=\pm\sqrt{1-\sin^2\theta}$

but as we've already shown, we need to have $\cos\theta$ , so we pick the negative root.

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