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11 months ago

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a parabola contains the following points.(-5,8),(2,-3),(3-1) Which of the following systems of equations could be solved in orde

r to find the equation that corresponds to this parabola?

1 answer:

Lera25 [3.4K]11 months ago

3 0

The general form of a parabola equation:

y = a*x^2 + b*x + c

For each point:

8 = 25*a - 5*b + c

-3 = 4*a + 2*b + c

-1 = 9*a + 3*b + c

This is our system of equations

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If the present value of my investment is $8,000 and the rate of interest is 12% compounded annually, what will the value be afte

Dvinal [7]

Answer:

$17,685.45

Step-by-step explanation:

We will use the compound interest formula to solve this:

$A=P(1+\frac{r}{n} )^{nt}$

<em>P = initial balance</em>

<em>r = interest rate (decimal)</em>

<em>n = number of times compounded annually</em>

<em>t = time</em>

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The first step is to change 12% into a decimal:

12% -> $\frac{12}{100}$ -> 0.12

Next, lets plug in the values:

$A=8,000(1+\frac{0.12}{1})^{1(7)}$

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3 years ago

I need math help. I don’t understand the question.

makkiz [27]

Answer:

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B.) 49 years old

Step-by-step explanation:

$P= 0.006y^{2} -0.01y+119$

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y = age in years

A.) Solution

To find: P

Given: y = 48

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P = 0.006 x 48 x 48 - 0.01 x 48 + 119

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Step-by-step explanation:

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Usimov [2.4K]

Answer:

$- \frac{5}{8}$

Step-by-step explanation:

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2 years ago