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GarryVolchara [31]
3 years ago
10

2. In 2010, the population of a town is 8500. The population decreases by 4.5% each year.

Mathematics
1 answer:
Greeley [361]3 years ago
6 0

If the population of a certain town decreases by 4.5% each year, we form a geometric sequence with first term equal to 8,500 and r equal to 0.955.

<span>(a)   </span>The equation is then,

<span>                                          An = (8,500)(0.955)^n</span>

Where n is the number of years.

 

<span>(b)   </span>Substituting 7000 to An and solving for n,

7000 = 8500*(0.955)^n

<span>            The value of n from the equation is 4.2 years. </span>

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Answer:

Your table might look something like this:

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The ratio is 3:5. This means dad wlaks 3 steps so son must walk 5 steps basically. So.......... You can now create the table. Y I just have to multiply or divide each side ( of the colon:) so. Whatever you do to one side, you do to the other side. If you x3 on one side, you do it to other. Same goes for division. In the 'table' I did above, I x2 to get 6 and 10. Then I took the 3 and the 5 again and timsed those by 3. You can also change the 6 and the 10. So:

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It's crazy that all these. Ratios mena the same thing! 45 steps from dad would take the son 75 steps. You can also divide the last ratio of 45:75 to find the one you started with, 3:5.

So you get the idea.

It is probably best to do what I did in the table in the answer part because I did a pattern. Take the top layer, and x2, then x3, then x4, ect. Rather then doing random things.

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