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3 years ago

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In 1980, wind turbines in Europe generated about 5 gigawatt-hours of energy. Over the next 15 years, the amount of energy increa

sed about 59% (each year). How many gigawatt-hours were generated?

1 answer:

Zinaida [17]3 years ago

3 0

Well the equation could be, f(x)=5(1.59)^15
which would equal 5247

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Get the general term for the sequence being your t3 = 11 and the t20 = 244.2

marusya05 [52]

Answer:

nth term = $t_{n} = 7.639(1.2)^{n - 1}$

Step-by-step explanation:

Let us assume that the given sequence is a G.P.

Now, if the first term of the G.P. is a and the common ratio is r, then

Third term = $t_{3} = ar^{2} = 11$ .......... (1) and

20th term = $t_{20} = ar^{19} = 244.2$ ........... (2)

Now, dividing equation (2) with equation (1) we get

$\frac{ar^{19} }{ar^{2} } = \frac{244.2}{11} = 22.2$

⇒ $r^{17} = 22.2$

⇒ r = 1.2.

Hence, from equation (1) we get

a(1.2)² = 11

⇒ a = 7.639 (Approx.)

Therefore, the general term of the sequence i.e. nth term = $t_{n} = 7.639(1.2)^{n - 1}$ (Answer)

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3 years ago

alan earned 200$ for 14 hours of work assuming he is paid by the hour how much will alan earn if he works 70 hours

In-s [12.5K]

Answer:

1,000

Step-by-step explanation:

200 divided by 14=14.285

14.285 times 70 equals 1000

7 0

3 years ago

Read 2 more answers

Help!! i also need the work please!!

alex41 [277]

Answer:

1. $1.40

2.$1.75

Step-by-step explanation:

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3 years ago

Read 2 more answers

erik [133]

Answer:

30%

Step-by-step explanation:

3+4+6+7= 20

6 (green) / 20

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3 years ago

If 112 sections are 34 mile long, how long is each section?

Ber [7]

Answer:

About 3.29 miles long for each section

Step-by-step explanation:

Find unit rate so 112/34 and you’d get 3.29 rounded.

6 0

3 years ago