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2 years ago

Someone help fast please

Mathematics

2 answers:

balandron [24]2 years ago

6 0

Answer:

Step-by-step explanation:

The sequence of payment is geometric , that is

1, 3, 9, ...

The sum to n terms of a geometric sequence is

$S_{n}$ = $\frac{a(r^{n}-1) }{r-1}$

where a is the first term and r the common ratio

Here a = 1 and r = 3 ÷ 1 = 3 , then

$S_{15}$ = $\frac{1(3^{15}-1) }{3-1}$ = $\frac{14348907-1}{2}$ = $\frac{14348906}{2}$ = 7174453 cents and

7174453 ÷ 100 = $71,744.53 → A

iVinArrow [24]2 years ago

3 0

Answer:

Step-by-step explanation:

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natka813 [3]

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The more accurate value is 807,528 but this is also an approximation.

=======================================================

Work Shown:

$t = \text{number of years since the year 2000}$

$P_0 = \text{population (in millions) in the year 2000}$

$P = P_0(1.2)^t\\\\5 = P_0(1.2)^{10}\\\\5 \approx P_0*6.1917364224\\\\P_0 \approx \frac{5}{6.1917364224}\\\\P_0 \approx 0.80752791444922\\\\P_0 \approx 0.807528\\\\$

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1 year ago