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dsp73
3 years ago
7

a country's population in 1994 was 52 million in 2000 it was 55 million estimate the population in 2003

Mathematics
1 answer:
atroni [7]3 years ago
3 0
[email protected] = 52,000,000
[email protected] = 55,000,000
[email protected] = ?
r = ?

Equation: P = Po * e^(rt)
-----
Solve r:
P/Po = e^(rt)

ln(P/Po) = rt
r = ln(P/Po)/t
r = ln([email protected]/[email protected])/(2000-1994)
r = ln(55M/52M)/6
r = 0.009348

----
Solve for [email protected]
t = 2003 - 1994 = 9

[email protected] = [email protected] * e^(rt)
[email protected] = 52M * e^(0.009348*9)
[email protected] = 56,564,292.9

approximately 57M.

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7 0
2 years ago
Evaluate the expression described below if the variable given is 9. Two times the difference of one-third of a number and three.
Mrac [35]

Answer:

Option C is correct.

The answer for the given expression is 0.

Step-by-step explanation:

Given the statement: Two times the difference of one-third of a number and three. and also variable given is 9.

Let x be the variable or number.

"One-third of a number"  means \frac{1}{3}x

Also, "difference of one third of a number and three " means \frac{1}{3}x-3

Now, "Two times the difference of one-third of a number and three" means   2 \times (\frac{1}{3} x -3)

Then, the expression for the given statement : 2 \times (\frac{1}{3} x -3)

Substitute the value of x =9 in above expression we have;

2 \times (\frac{1}{3}(9) -3) = 2 \times (3 -3) = 2 \times (0) = 0

therefore, the answer for the given expression is, 0


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