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3 years ago

7

A triangle lies entirely in Quadrant 1. In which quadrant will the triangle lie after each rotation about (0, 0)?

2 answers:

ladessa [460]3 years ago

7 0

Hello there! :D (again)

Explanation:
Well, (0,0) its accesible only in quadrant 1 and 2, because if not it would be (-0,-0) or (-0,0), or even (0,-0)

So, if we think about it, we already have (0,0) in Quadrant 1,so for it to give us the same pair as positive, it would need to be in Quadrant 2.

Answer:
Quadrant 2.
(if you have any questions please ask me)

-Ari.

tester [92]3 years ago

6 0

Well, if the the triangle is rotated clockwise it will lie in quadrant 4. if it is rotated anticlockwise it will lie on quadrant 2
hope this helps

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Answer:

The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.

Step-by-step explanation:

For an exponential distribution we have

The expected value μ = 80

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Thus we have

$p=\frac{80}{200}=0.4$

The deviation is related to expected value and probability as

$\sigma =\sqrt{np(1-p)}\\\\\therefore \sigma =\sqrt{200\cdot 0.4\cdot (1-0.4)}=6.9$

Thus the values between the given deviation is

$x_{1}=80-2.5\times 6.9=62.75\\\\x_{2}=80+6.9\times 2.5=97.25$

Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.

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3 years ago

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Answer:

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lapo4ka [179]

Divide both sides by -3, and replace $x^2$ with $y$ . Then

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Factorize the quadratic in $y$ to get

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4 years ago

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bija089 [108]

Answer:

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Step-by-step explanation:

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We have the final answer as

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