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2 years ago

11

A large garden is treated with a liquid fertilizer that requires 3 ounces of concentrated fertilizer for every 50 ounces of wate

r. How much fertilizer is needed for 250 ounces of water?

1 answer:

mel-nik [20]2 years ago

5 0

15 ounces, because 250/50= 5. 5x3=15

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16) Please help with question. WILL MARK BRAINLIEST + 10 POINTS.

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We will use the sine and cosine of the sum of two angles, the sine and consine of $\frac{\pi}{2}$ , and the relation of the tangent with the sine and cosine:

$\sin (\alpha+\beta)=\sin \alpha\cdot\cos\beta + \cos\alpha\cdot\sin\beta

\cos(\alpha+\beta)=\cos\alpha\cdot\cos\beta-\sin\alpha\cdot\sin\beta$

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If you use those identities, for $\alpha=x,\ \beta=\dfrac{\pi}{2}$ , you get:

$\sin\left(x+\dfrac{\pi}{2}\right) = \sin x\cdot\cos\dfrac{\pi}{2} + \cos x\cdot\sin\dfrac{\pi}{2} = \sin x\cdot0 + \cos x \cdot 1 = \cos x$

$\cos\left(x+\dfrac{\pi}{2}\right) = \cos x \cdot \cos\dfrac{\pi}{2} - \sin x\cdot\sin\dfrac{\pi}{2} = \cos x \cdot 0 - \sin x \cdot 1 = -\sin x$

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3 years ago

Xavier ran four miles on his first day of training. The next day he ran eight ninths that distance. How far did he run on the se

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Well, it's the product of 8/9 and the 4 miles. The result is 32/9 miles, that is, 3,55 miles.

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2 years ago

Juan ran all the way around a circular track one time. The diameter (d) of the track is 60 meters. The formula for circumference

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circumference is C = πd, d = diameter.

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3 years ago

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