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Rufina [12.5K]
3 years ago
5

Nut B fits on Bolt B. Nut A fits on Bolt C, but does not fit on Bolt A. Bolts B and A are exactly the same. Given the scenario,

will nut A fit on Bolt B?
Mathematics
1 answer:
Elena L [17]3 years ago
6 0
Nut B -> Bolt B
Nut A -> Bolt C, but NOT Bolt A
Bolt B is also the same as Bolt A, so Bolt B = Bolt A
Then, Nut B -> Bolt A.
Remember that Nut A didn't fit on Bolt A, and Bolt A is the same as Bolt B. 

So, Nut A will NOT fit on Bolt B.
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The average human gestation period is 270 days with a standard deviation of 9 days. The period is normally distributed. What is
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Answer:

Probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.

Step-by-step explanation:

We are given that the average human gestation period is 270 days with a standard deviation of 9 days. The period is normally distributed.

Firstly, Let X = women's gestation period

The z score probability distribution for is given by;

         Z = \frac{ X - \mu}{\sigma} ~ N(0,1)

where, \mu = average gestation period = 270 days

            \sigma = standard deviation = 9 days

Probability that a randomly selected woman's gestation period will be between 261 and 279 days is given by = P(261 < X < 279) = P(X < 279) - P(X \leq 261)

         P(X < 279) = P( \frac{ X - \mu}{\sigma} < \frac{279-270}{9} ) = P(Z < 1) = 0.84134

         P(X \leq 261) = P( \frac{ X - \mu}{\sigma} \leq \frac{261-270}{9} ) = P(Z \leq -1) = 1 - P(Z < 1)

                                                           = 1 - 0.84134 = 0.15866

<em>Therefore, P(261 < X < 279) = 0.84134 - 0.15866 = 0.68</em>

Hence, probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.

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Answer:

222.7 cm³ of paper to wrap this.

Step-by-step explanation:

The rectangular prism is SA=2(wl+hl+hw)

Where:

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SA= 2((5*5)+(4*5)+(4*5))

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The square base pyramid is A= lw+l\sqrt{x} (w/2)^2+h^2+w +w\sqrt{x} (1/w)^2+h^2

SA= 6*5+6*\sqrt{x} (5/2)^2+5^2+5*\sqrt{x} (6/2)^2

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Add the two together 130+92.70 =222.7 cm³

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