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3 years ago

Sara says, “if you subtract 19 from my number and multiply the difference by -5, the result is -40. is Sara’s number?

Mathematics

1 answer:

Marta_Voda [28]3 years ago

5 0

Answer:

Sara's number is 27

Step-by-step explanation:

27-19=8

-5*8=-40

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$\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

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$\tan2\theta=\dfrac{\sin2\theta}{\cos2\theta}$

$\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

Hence, The value of $\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

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3 years ago

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<img src="https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D%20x%2B%5Cfrac%7B1%7D%7B2%7D%20%3D%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1"

kotegsom [21]

Answer:

$x = \frac{5}{8}$

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

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