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laiz [17]
3 years ago
7

Can you help me plz?

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
7 0

Answer:C

Step-by-step explanation:you have to divide 12/8

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Wires manufactured for use in a computer system are specified to have resistances between .12 and .14 ohms. The actual measured
White raven [17]

Answer: a) 0.9544996

b) 0.9999366

Step-by-step explanation:

Given : The actual measured resistances of wires produced by company A have a normal probability distribution with mean \mu=0.13 ohm and standard deviation s=0.005 ohm.

Wires manufactured for use in a computer system are specified to have resistances between .12 and .14 ohms.

Let x be the random variable that represents the value of resistance in wires.

Using formula for z-score , z=\dfrac{x-\mu}{s}

The z-value at x= 0.12 will be

z=\dfrac{0.12-0.13}{0.005}=-2

The z-value at x= 0.14 will be

z=\dfrac{0.14-0.13}{0.005}=2

The p-value : P(-2

=0.9772498-(1-P(z

Hence, the probability that a randomly selected wire from company A’s production will meet the specifications = 0.9544996

b) Sample size : n= 4

Using formula for z-score , z=\dfrac{x-\mu}{\dfrac{s}{\sqrt{n}}}

The z-value at x= 0.12 will be

z=\dfrac{0.12-0.13}{\dfrac{.005}{\sqrt{4}}}=-4

The z-value at x= 0.14 will be

z=\dfrac{0.14-0.13}{\dfrac{.005}{\sqrt{4}}}=4

The p-value : P(-4

=0.9999683-(1-P(z

The probability that all four in a randomly selected system will meet the specifications = 0.9999366

3 0
4 years ago
A culture of bacteria has an initial population of 650 bacteria and doubles every 9 hours. Using the formula Pt=P0⋅2tdP_t = P_0\
Ghella [55]
So is doubling, first off, meaning, if the current amount say P, then when it doubles is 2P, or double that, or P + P, so the rate of growth is 100%, since it's doubling.

and is doing it every 9 hour cycle, thus

\bf \textit{Periodic/Cyclical Exponential Growth}\\\\
A=P(1 + r)^{\frac{t}{c}}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &650\\
r=rate\to 100\%\to \frac{100}{100}\to &1.00\\
t=\textit{elapsed time}\to &10\\
c=period\to &9
\end{cases}
\\\\\\
A=650(1 + 1)^{\frac{10}{9}}\implies A=650(2)^{\frac{10}{9}}\implies A=650\sqrt[9]{2^{10}}
4 0
3 years ago
5. Greg used a sensor to measure the speed of a moving car at different
Hatshy [7]

The correct option regarding whether the table represents a proportional relationship is:

The relationship is proportional because the ratio of m to k is constant.

<h3>What is a proportional relationship?</h3>

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

In this problem, the ratio of m to km is given as follows:

k = 11/17.699 = 26/41.834 = 34/54.706 = 0.6215.

Since the values are equal, the correct option is:

The relationship is proportional because the ratio of m to k is constant.

More can be learned about proportional relationships at brainly.com/question/10424180

#SPJ1

4 0
2 years ago
Help plz i will give brainliest if correct! HELP HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZ
erastovalidia [21]

Answer:

1000

Step-by-step explanation:

pls trust me

pls brainliest

3 0
3 years ago
HELP PLLLLLSSSDDSSSSSS
Readme [11.4K]

Answer:

the answer is a.

Step-by-step explanation:

i hope this helps :)

8 0
3 years ago
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