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3 years ago

A group of friends recorded how fast tthey could run a 100 meters

Mathematics

2 answers:

Maru [420]3 years ago

8 0

Answer:

58.4

Step-by-step explanation:

Runner 1 ran 14.85 and Runner 2 ran 14.05 from there you need to add the two together and you get 28.90. From there you can add Runner 3 and Runner 4 time together and you get 29.50.

After that you add them together and you get 58.4

I hope this helps! Let me know if you need more help on this question.

Liula [17]3 years ago

8 0

58.4 is the correct answer

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4 years ago

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Delicious77 [7]

Answer:

$\sin\theta=-\frac{\sqrt{6}}{3}$

Step-by-step explanation:

The given trigonometric equation is $\cos(-\theta)=\frac{\sqrt{3} }{3}$ .

We can either use the Pythagorean identity or the right angle triangle to solve for $\sin\theta$ .

According to the Pythagorean identity,

$\cos^2\theta+\sin^2\theta=1$

Recall that, the cosine function is an even function, therefore

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We substitute this value in to the above Pythagorean identity to get;

$(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1$

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$\Rightarrow \sin^2\theta=\frac{6}{9}$

$\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}$

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But we were given that,

$\sin\theta\:$ , so we choose the negative value.

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The correct answer is B

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4 years ago

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ycow [4]

Answer:

Yes it is

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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