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3 years ago

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Mathematics

1 answer:

damaskus [11]3 years ago

3 0

Answer:

Step-by-step explanation:

At the end of 10 years she will owe $12,500 × 1.05¹⁰ ≈ $20,361.

$12,500 of that is the original loan, so the interest is $20,361 - $12,500 = $7,861

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Given:

The equation is:

$\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}$

To find:

The value of a.

Solution:

We have,

$\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}$

On simplification, we get

$(3)(2)+(4\sqrt{3})(2)+(3)(-a\sqrt{3})+(4\sqrt{3})(-a\sqrt{3})=-18+2\sqrt{3}$

$6+8\sqrt{3}-3a\sqrt{3}-4a(3)=-18+2\sqrt{3}$

$6+8\sqrt{3}-3a\sqrt{3}-12a=-18+2\sqrt{3}$

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On comparing both sides, we get

$6-12a=-18$

$-12a=-18-6$

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And,

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$-3a=2-8$

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Therefore, the value of a is 2.

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Answer:

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Step-by-step explanation:

let the number= Y

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