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tresset_1 [31]
3 years ago
12

What is 5 X 1 over 3/5

Mathematics
2 answers:
Fynjy0 [20]3 years ago
5 0
I got 8 1/3 (8.3 is what it would round to)
dybincka [34]3 years ago
3 0

Answer:

0.3

Step-by-step explanation:

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A county's population in 1991 was 147 million. In 1998 it was 153 million. Estimate the population in 2017 using the exponential
aliina [53]
Let t=number of years since 1991.
Then 
P(t)=147 e^(kt)   ... in millions
P(0)=147 e^(0)=147
P(7)=147 e^(7k)=153
e^(7k)=(153/147)
take ln both sides
ln(e^(7k))=ln(153/147)
7k=0.0400 => k=0.005715

Year 2017=>t=2017-1991=26
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Answer: in 2017, the projected population is 170.55 millions.
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3 years ago
What is the tan invers of 3i/-1-i​
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<em>z</em> = 3<em>i</em> / (-1 - <em>i</em> )

<em>z</em> = 3<em>i</em> / (-1 - <em>i</em> ) × (-1 + <em>i</em> ) / (-1 + <em>i</em> )

<em>z</em> = (3<em>i</em> × (-1 + <em>i</em> )) / ((-1)² - <em>i</em> ²)

<em>z</em> = (-3<em>i</em> + 3<em>i</em> ²) / ((-1)² - <em>i</em> ²)

<em>z</em> = (-3 - 3<em>i </em>) / (1 - (-1))

<em>z</em> = (-3 - 3<em>i </em>) / 2

Note that this number lies in the third quadrant of the complex plane, where both Re(<em>z</em>) and Im(<em>z</em>) are negative. But arctan only returns angles between -<em>π</em>/2 and <em>π</em>/2. So we have

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arg(<em>z</em>) = arctan(1) - <em>π</em>

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arg(<em>z</em>) = -3<em>π</em>/4

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2 years ago
The marijority of the population in the United states _________.
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It should be C english :)
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I need help with number 15
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400,7,000 i think im not quit sure i dont know 

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