3 years ago

The estimated world population in the year 1650 was 550,000,000. The estimated

Mathematics

1 answer:

Naya [18.7K]3 years ago

7 0

Answer:

175,000,000

Step-by-step explanation:

you subtract 550,000,000 from 725,000,000

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Consider the sequence defined recursively by do = 0, an = an-1 + 3n – 1. a) Write out the first 5 terms of this sequence,

creativ13 [48]

Answer:

The first 5 terms of the sequence is 2,7,15,26,40.

Step-by-step explanation:

Given : Consider the sequence defined recursively by $a_0=0$ $a_n=a_{n-1}+3n-1$

To find : Write out the first 5 terms of this sequence ?

Solution :

$a_n=a_{n-1}+3n-1$ and $a_0=0$

The first five terms in the sequence is at n=1,2,3,4,5

For n=1,

$a_1=a_{1-1}+3(1)-1$

$a_1=a_{0}+3-1$

$a_1=0+2$

$a_1=2$

For n=2,

$a_2=a_{2-1}+3(2)-1$

$a_2=a_{1}+6-1$

$a_2=2+5$

$a_2=7$

For n=3,

$a_3=a_{3-1}+3(3)-1$

$a_3=a_{2}+9-1$

$a_3=7+8$

$a_3=15$

For n=4,

$a_4=a_{4-1}+3(4)-1$

$a_4=a_{3}+12-1$

$a_4=15+11$

$a_4=26$

For n=5,

$a_5=a_{5-1}+3(5)-1$

$a_5=a_{4}+15-1$

$a_5=26+14$

$a_5=40$

The first 5 terms of the sequence is 2,7,15,26,40.

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3 years ago

3 . Which list of numbers is ordered from least to

mihalych1998 [28]

Answer:

it’s C. 0.02,0.2.1/2, 2 1/2

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3 years ago

Which expression is unidentified -8÷(-8), -8÷8, 0÷8, 8÷0

Alex_Xolod [135]

Answer:

The last one, 8 / 0

Step-by-step explanation:

The last expression is undefined because in math it is forbidden to divide by zero.

Hope this helps)))

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3 years ago

Is 24 laps in 6 minutes equivalent

alekssr [168]

Answer:

yes it is

Step-by-step explanation:

that is a lap every 6 seconds .

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3 years ago

The following below shows values for x and y. If y varies directly with x, what is the constant of variation?

Bingel [31]

Option C is correct.

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3 years ago

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