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3 years ago

9

X^2-10x+8=0 by completing the square

1 answer:

OverLord2011 [107]3 years ago

4 0

When completing the square <span>x=9.12311 and </span><span>x=<span>0.876894</span></span>

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V+9<br> ------- =8 how do you do this and whhats the answer<br><br> 3

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3 years ago

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schepotkina [342]

Answer: 36

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Select the three correct ways to describe an angle with a measure of 13°.

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Answer:

acute, small, and 13•

Step-by-step explanation:

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3 years ago

Six times a number is less then 60

prohojiy [21]

Are we just supposed to translate this word problem into numbers?

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3 years ago

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A farmer who grows genetically engineered corn is experiencing trouble with corn borers. A random check of 5,000 ears revealed t

Ivenika [448]

Answer:

Probability that an ear of corn selected at random will contain no borers is 0.4966.

Step-by-step explanation:

We are given that the distribution of the number of borers per ear approximated the Poisson distribution. The farmer counted 3,500 borers in the 5,000 ears.

Let X = <u><em>Number of borers per ear</em></u>

The probability distribution of the Poisson distribution is given by;

$P(X=x) = \frac{e^{-\lambda }\times \lambda^{x} }{x!} ; x = 0,1,2,3,......$

where, $\lambda$ = parameter of this distribution and in our question it is proportion of bores in the total ears = $\frac{3500}{5000}$ = 0.7

SO, X ~ Poisson( $\lambda$ = 0.7)

Now, probability that an ear of corn selected at random will contain no borers is given by = P(X = 0)

P(X = 0) = $\frac{e^{-0.7}\times 0.7^{0} }{0!}$

= $e^{-0.7}$ = <u>0.4966</u>

Hence, the required probability is 0.4966.

6 0

3 years ago