2 years ago

Show how to write 3/4 with the denominator 12

Mathematics

1 answer:

makvit [3.9K]2 years ago

3 0

3/4*3/3=9/12

Hope this helps

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Assume a normal distribution and that the average phone call in a certain town lasted 4 min, with a standard deviation of 1 min.

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SOLUTION

The mean is 4min

standard deviation is 1min

the z score is

$z=\frac{x-\bar{x}}{\sigma}$

where

$\begin{gathered} x=3 \\ \bar{x}=4 \\ \sigma=1 \end{gathered}$

then we have

$\begin{gathered} z=\frac{3-4}{1}=\frac{-1}{1}=-1 \\ z=-1 \end{gathered}$

The probability the call lasted less than 3 min will be

Therefore, the probability that (z < -1 ) is

[tex]\begin{gathered} Pr(z<-1)=Pr(0Hence, the percentage of the calls that lasted less than 3 min is 16%

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Mandarinka [93]

$\frac{5}{a + 3} = \frac{3}{a - 2}$

$5(a - 2) = 3(a + 3)$

$5a - 10 = 3a + 9$

$5a - 3a = 9 + 10$

$2a = 19$

$a = \frac{19}{2} = 9 \frac{1}{2}$

$Answer = D.) a = 9 \frac{1}{2}$

$\textbf{Spymore}$

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Answer:

9 + 2j is the required algebraic equation.

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What is the standard Form of y+1/5=3x

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Answer:

y=3x-1/5

Step-by-step explanation:

we have to move 1/5 to the other side

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