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Veseljchak [2.6K]
3 years ago
10

What is equivalent to i4?

Mathematics
1 answer:
bezimeni [28]3 years ago
4 0
Hello : 
 <span>i4 = i²× i² =(-1)(-1) = 1  because : i² = -1</span>
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A soft drink machine outputs a mean of 27 ounces per cup. The machine's output is normally distributed with a standard deviation
Rzqust [24]

Answer:  0.6065

Step-by-step explanation:

Given : The machine's output is normally distributed with

\mu=27\text{ ounces per cup}

\sigma=3\text{ ounces per cup}

Let x be the random variable that represents the output of machine .

z-score : z=\dfrac{x-\mu}{\sigma}

For x= 21 ounces

z=\dfrac{21-27}{3}\approx-2

For x= 28 ounces

z=\dfrac{28-27}{3}\approx0.33

Using the standard normal distribution table , we have

The p-value : P(21

P(z

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8 0
3 years ago
A particular computer takes 12 minutes to download a 36​-minute TV show. How long will it take the computer to download a 2​-hou
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<span>A particular computer takes 12 minutes to download a 36​-minute TV show. How long will it take the computer to download a 2​-hour ​movie

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7 0
3 years ago
Elsa earns 5140 for working 20 hours
lys-0071 [83]

Answer:

$2.57

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divide 5,140 by 20,

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7 0
2 years ago
Choose all the expression that have the same value as the product 0.11 and 4.5.
omeli [17]
Okay so.
A is 4.95
B is 4.95
C is 4.95
D is 4.95
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3 0
3 years ago
Tyler is laying tile on his rectangular kitchen floor. The dimensions of the floor are 16 1/2 feet by 15 feet. If he is using sq
blondinia [14]
First, find the area for the kitchen floor: 16.5*15=247.5 squared feet
Then find the area for one tile: 0.5*0.5=0.25 squared feet
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Also you can do it in this another way:
First, divide length of the kitchen floor between the length of one tile: 16.5/0.5=33
Then, do the same for the height: 15/0.5=30
Finally multyply both results: 33*30= 990 tiles. 
8 0
3 years ago
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