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serious [3.7K]
3 years ago
13

4x^2+4x+1=9 solutions

Mathematics
1 answer:
Artyom0805 [142]3 years ago
5 0

Answer:

4(x-2)(x+1)=0

Step-by-step explanation:

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Z=5x-y solve for x plz help
pentagon [3]

Answer:

z+y/5=x or z/5 + y/5 = x

Step-by-step explanation:

z=5x-y

add y to both sides

z+y=5x

divide both sides by 5

z+y/5=x or z/5 + y/5 = x

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3 years ago
How to find if a triangle is acute or obtuse with side lengths?
elena55 [62]
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8 0
3 years ago
Suppose you are repeating a classic study of starfish and their impact on the ecosystems of tide pools. Using historic data coll
Travka [436]

Answer:

The probability of the number of starfish dropping below 3 is 0.0463.

Step-by-step explanation:

Let X represent the number of starfish in the tide pool.

X follows a Poisson distribution with mean 6.4.

The formula for Poisson distribution is as follows.

P(X=x) = e^{-6.4} * [6.4^{x} / x!] when x = 0, 1, ...

P(X = x) = 0 otherwise

We need to find the probability that the number of starfish in the tide pool drops below 3.

Therefore, the required probability is:

P(X < 3) = P(X = 0) + P(X = 1) + P(X=2)

P(X < 3) = e^{-6.4} + (e^{-6.4}*6.4) + (e^{-6.4}*6.4^{2}/2)

P(X < 3) = 0.00166 + 0.01063 + 0.03403

P (X < 3) = 0.0463

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3 years ago
58% of 250 pls quick I’m in a test rn Yr 7
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Step-by-step explanation:the answer is 145

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