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AnnZ [28]
2 years ago
6

HELPPPP HOMEWORKKK 15 Points

Mathematics
1 answer:
Arlecino [84]2 years ago
4 0

Answer:

x=12

Step-by-step explanation:

First, you know a triangle is equal to 180. Since you know the sum of the other two angles equal the outside angle, you can make them equal to each other, like 112=6x+3x+4. Combine like terms to 112=9x+4. Subtract 4 on both sides and divide by 9 on both sides to leave x by itself. This will leave you with x=12

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3 years ago
Angelina deposits $3000 in a savings account on 1 January 2019, earning compound interest of 1.5% per year.
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The interest earned would be $481.62.

The total amount of money in her account would be $16,377.12.

<h3>Determining interest after 10 years </h3>

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Interest =  $3,481.62 - $3000 = $481.62

<h3>Determining the future value of the account.</h3>

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Future value of the annuity = amount deposited x annuity factor

Annuity factor = {[(1+r)^n] - 1} / r = [(1.015)^10 - 1] / 0.015 = 10.702722

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To learn more about future value, please check: brainly.com/question/18760477

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