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strojnjashka [21]

2 years ago

15

Sarah can make 3/5 of a necklace in 15 minutes. At this rate, how many necklaces, to the nearest tenth of a necklace, can sarah

make in 1 hour?
ANSWER ASSAP PLSSSSSSSSSS

1 answer:

galina1969 [7]2 years ago

8 0

Answer:

She can make 2 2/5 necklace in one hour

Step-by-step explanation:

60/15=4 so she makes 3/5*4=12/5=2 2/5

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Calculate cos(480°) and sin(480°).

hram777 [196]

Answer:

$\cos(480^\circ)=-\dfrac{1}{2}$

$\sin(480^\circ)=\dfrac{\sqrt{3}}{2}$

Step-by-step explanation:

Calculate the value of trigonometry function.

$\cos(480^\circ)$ and $\sin(480^\circ)$

Split the angle between 0 to 90° using trigonometry formula.

$\Rightarrow \cos(360^\circ+120^\circ)$

$\Rightarrow \cos(120^\circ)$ $\because \cos(360+\theta)=\cos\theta$

$\Rightarrow \cos(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow -\cos(60^\circ)$ $\because \cos(180-\theta)=-\cos\theta$

$\Rightarrow -\dfrac{1}{2}$

Therefore, cos(480°) = -0.5

$\Rightarrow \sin(360^\circ+120^\circ)$

$\Rightarrow \sin(120^\circ)$ $\because \sin(360+\theta)=\sin\theta$

$\Rightarrow \sin(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow \sin(60^\circ)$ $\because \sin(180-\theta)=\sin\theta$

$\Rightarrow \dfrac{\sqrt{3}}{2}$

Therefore, sin(480°) = 0.866

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Sedbober [7]

Step-by-step explanation:

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2 years ago

Original price; 30.50; Markdown 30%

Stels [109]

Answer:

After the markdown, the cost will be $21.35

Step-by-step explanation:

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3 years ago

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3 years ago