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enot [183]
2 years ago
8

NEED THIS DONE ASAP!! Thank you!!​

Mathematics
1 answer:
g100num [7]2 years ago
7 0

Answer:

\overset{\frown}{WX}= 66^{\circ}

Step-by-step explanation:

<u>Inscribed Angle Theorem</u>

The measure of an <u>inscribed angle</u> is half the measure of the <u>intercepted arc</u>.

First, use the Inscribed Angle Theorem to calculate the measure of arc WY.

  \displaystyle \angle WXY=\dfrac{1}{2} \overset{\frown}{WY}

\implies 57^{\circ}=\dfrac{1}{2} \overset{\frown}{WY}

\implies \overset{\frown}{WY}= 2 \cdot 57^{\circ}

\implies \overset{\frown}{WY}= 114^{\circ}

Assuming XY is the diameter of the circle:

\implies \overset{\frown}{WY}+ \overset{\frown}{WX}= 180^{\circ}

\implies 114^{\circ} + \overset{\frown}{WX}= 180^{\circ}

\implies \overset{\frown}{WX}= 180^{\circ} - 114^{\circ}

\implies \overset{\frown}{WX}= 66^{\circ}

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Step-by-step explanation:

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In microbiology, colony-forming units (CFUs) are used to measure the number of microorganisms present in a sample. To determine
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(b)  0.0111

(c)  0.0105

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Step-by-step explanation:

Given that:

In microbiology, colony-forming units (CFUs) are used to measure the number of microorganisms present in a sample.

Suppose that the number of CFUs that appear after incubation follows a Poisson distribution with mean μ = 15.       &;

If the area of the agar plate is 75cm²;

what is the probability  of observing fewer than 4 CFUs in a 25 cm² area of the plate.

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= P(X < 4)

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use the normal approximation

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Using normal table

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=  0.0111 - 0.0105

= 6*10^{-4}

= 0.0006 to four decimal places

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