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Thepotemich [5.8K]
1 year ago
10

1. Which statement is not true? A. Rational numbers are closed under division. B. Odd numbers are closed under multiplication. C

. Prime numbers are closed under subtraction. D. Integers are closed under addition​
Mathematics
1 answer:
kotegsom [21]1 year ago
3 0

Answer:

integers are closed under division

Step-by-step explanation:

Integers are not closed under division.Let us consider two integers i and j.

Then  need not necessarily be an integer. For example, 2 and 3 are integers but  is not an integer. So the first option , namely, integers are closed under division is not true.

On the other hand, the remaining three options given are correct.

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Find the area and perimeter of this irregular shape: picture #8
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Answer:

Perimeter: 14.2

Area: 9.2

Step-by-step explanation:

Simple times for area

simple plus for perimeter

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2 years ago
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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>

Interest = future value - amount deposited

$3000 (1.015)^10 = $3,481.62

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

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

 Future value of the lump sum = $3000 x (1.015)^11 = $3,533.85

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

Future value =  10.702722 x $1,200 = $12,843.27

Total future value =  $12,843.27 + $3,533.85 = $16,377.12

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

4 0
2 years ago
Reduce this algebraic fraction. y^3 -3y^2+y-3 / y^2-9
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Answer:

y³ - 3y² + 1/y+3

Step-by-step explanation:

y² - 9 = (y - 3) ( y + 3)

y-3/(y-3)(y+3) = 1/y+3

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Can someone help me fill out 1-6
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Answer:

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2 years ago
Find the height of an equilateral triangle with sides of length 12
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Answer:

Answer

sqrt(108)

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I don't know which answer you  want.

Step-by-step explanation:

  • Drop a perpendicular from the top angle to the base.
  • The base is cut into 2 equal parts.
  • Each part is 12/2 = 6
  • The perpendicular, as its name implies, meets the base at 90o.
  • You can use the Pythagorean Theorem to find the height.

h^2 = side^2 - (1/2 b)^2

h^2 = 12^2 - 6^2

h^2 = 144 - 36

h^2 = 108

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h = sqrt(108)

h = sqrt(2*2 * 3 * 3 * 3)

h = 2 * 3 sqrt(3)

h = 6sqrt(3)

h = 6 * 1.7321

h = 10.3923

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2 years ago
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