2 years ago

Roberto deposited $5,000 into an account with 4.2% interest, compounded monthly.

Mathematics

1 answer:

Marina86 [1]2 years ago

8 0

Answer:

$50,581.9

Step-by-step explanation:

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The given question can be solve using quadratic formula.

The correct option is (c) $3x^2 +8x -10=-8$ .

Given:

The given equation is,

$x=\dfrac{-8\pm\sqrt{8^2-4(3)(-1)}} {2(3)}$ ---------------------------(1)

Write the general quadratic equation.

$ax^2 + bx +c=0$

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Compare equation (1) and (2).

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Substitute the value of $a$ , $b$ and $c$ in general quadratic.

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