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Phantasy [73]
3 years ago
5

Lin runs 4 laps around a track in 12 minutes.

Mathematics
2 answers:
Gnoma [55]3 years ago
8 0

Answer:

it would take her 42 mins

Step-by-step explanation:

inysia [295]3 years ago
3 0

Answer:

Hello There!!

Step-by-step explanation:

I think this is how you work it out:

4 times what is 12=3(4×3=12)

14×3=42

Whatever you do to the top you do it to the bottom so its times by 3.The answer is 42 minutes. Sorry if I'm wrong.

hope this helps,have a great day!!

~Pinky~

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Find the values of x,y,z. This diagram is not a scale.
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Important:
                             The sum of the three angles inside
                              every triangle is always 180°.


First, look at the left triangle alone.
Two of its angles are 46° and 58° .  (46° + 58° ) = 104°
That leaves (180° - 104° ) = 76° degrees for the third angle.
The third angle in that triangle is 'x'. 
                                                         x = 76° .

At the point where 'x' and 'z' come together:
'x' and 'z' are a "linear pair".
Placed side-by-side, they form a straight line.
So (x + z) = 180° .
But  x = 76°.
So z = (180° - 76°).              z = 104° .

Now look at the the skinny triangle on the right alone.
The angle at the top is 13°, and  z = 104°. 
(13° + 104°) = 117° . 
That leaves (180° - 117°) = 63° for the third angle.
'y' is the third angle.
                                                 y = 63° .

3 0
3 years ago
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The weight of eggs from a local farm are Normally
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Answer:

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Step-by-step explanation:

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Kazeer [188]

Answer:

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Step-by-step explanation:

Given: \sin\theta = \dfrac{1}{3}

0\leq \theta \leq \dfrac{\pi}{2}

Theta lie in first quadrant.

Multiply both sides by 2

0\leq 2\theta \leq \pi

2theta lie in I and II quadrant.

\tan2\theta is positive in I and negative in II quadrant.

\sin\theta=\dfrac{1}{3}

\cos\theta=\dfrac{2\sqrt{2}}{3}

\sin2\theta=2\sin\theta\cos\theta

\sin2\theta=2\cdot \dfrac{1}{3}\cdot \dfrac{2\sqrt{2}}{3}=\dfrac{4\sqrt{2}}{9}

\cos2\theta=\pm \sqrt{1-\sin^22\theta}=\pm\dfrac{7}{9}

\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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4 years ago
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