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Nikolay [14]
3 years ago
11

Suppose Johnny invests $41,745 into an account, which has been earning interest for many years and he now has a total of $39,974

. In two or more sentences explain why a negative number would/wouldn’t be reasonable in the solution of the rate of the investment.
Mathematics
1 answer:
Dmitriy789 [7]3 years ago
7 0

Answer:

A negative number would be reasonable in the solution of the rate of the investment. It would be reasonable because Johnny started out with $41,745 in his account and ended up with $39,974 which means that the rate has to be negative.


please rate and thank : )


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omeli [17]
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From the graph,
When x = 1, y = 0.5
Therefore, b = 0.5


To confirm this

From the graph,

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2 = </span>b^-1
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When x = -2, y = 4
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4 = b^-2
4 = 1/(b^2)
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3 years ago
Read 2 more answers
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Lina20 [59]

Option D: Two irrational solutions

Explanation:

The equation is 17+3 x^{2}=6 x

Subtracting 6x from both sides, we have,

3x^{2} -6x+17=0

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x=\frac{6 \pm \sqrt{36-4(3)(17)}}{2(3)}

Simplifying the expression, we get,

\begin{aligned}x &=\frac{6 \pm \sqrt{36-204}}{6} \\&=\frac{6 \pm \sqrt{-168}}{6} \\&=\frac{6 \pm 2 i \sqrt{42}}{6}\end{aligned}

Taking out the common terms and simplifying, we have,

\begin{aligned}x &=\frac{2(3 \pm i \sqrt{42})}{6} \\&=\frac{(3 \pm i \sqrt{42})}{3}\end{aligned}

Dividing by 3, we get,

x=1+i \sqrt{\frac{14}{3}}, x=1-i \sqrt{\frac{14}{3}}

Hence, the equation has two irrational solutions.

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Hi.

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We can prove this by substituting <em>x</em> with 1 (the initial measurement)

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