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Ne4ueva [31]
4 years ago
13

In 1950, scientists estimated a certain animal population in a particular geographical area to be 6,400. In 2000, the population

had risen to 7,200. If the animal population experiences the same percent increase over the next 50 years, what will the approximate population be?
A) 8,000
B) 8,100
C) 8.400
D) 8.600
Mathematics
1 answer:
nekit [7.7K]4 years ago
5 0

Answer:8600

Step-by-step explanation:

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Answer:

a values of r and a that the answer

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Can someone help me with number 4,5 and 6?
True [87]
4) You know slope-intercept form is y=mx+b. So using these two given points, you can find the slope! 

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10 - 5         5
---------   = ----- = 1 
-3-(-8)         5

Hurray! You got a slope of one. Now substitute this back into your original equation:
y=mx+b --> y=1x+b 

Next, we find what our "b" is, or what our y-intercept is:
Using one of the previous points given, substitute them into the new equation:
[I used the point (-3, 10) ]

y=1x+b
10=1(-3)+b  SUBSTITUTE 
10=-3+b     MULTIPLY
10=-3+b
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So, now we have our y-intercept. Use this and plug it into the equation:
y=1x+b --> y=1x+13 

y=1x+13 is our final answer.



5) So for perpendicular lines, your slope will be the opposite reciprocal of the original slope. (Ex: Slope is 2, but perpendicular slope is -1/2) 

We have the equation y= 3x-1, so find the reciprocal slope! 
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Good! Now we take our given point, (9, -4) and plug it into the new equation:

y=-1/3x-1
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+3   +3            ADD
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So, our final answer is y=-1/3x+(-1)

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vazorg [7]
Henry has 3 / 4 0f total cost so,
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