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Zinaida [17]
4 years ago
12

I need help with this one.

Mathematics
1 answer:
erastova [34]4 years ago
6 0

Answer:

y = 3x + 5

Step-by-step explanation:

The equation in slope- intercept form is

y = mx + c

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, - 1) and (x₂, y₂ ) = (2, 11) ← 2 ordered pairs from the table

m = \frac{11+1}{2+2} = \frac{12}{4} = 3, thus

y = 3x + c ← is the partial equation

To find c substitute any ordered pair from the table into the partial equation

Using (2, 11 ), then

11 = 6 + c ⇒ c = 11 - 6 = 5

y = 3x + 5 ← equation of linear function

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34+0+18+26 = 34+0+18+26

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Sara invests $1,200 each year in an IRA ( 12 years in an account that earned 5%
Sati [7]
A)

\bf \qquad \qquad \textit{Future Value of an ordinary annuity}
\\\\
A=pymnt\left[ \cfrac{\left( 1+\frac{r}{n} \right)^{nt}-1}{\frac{r}{n}} \right]
\\\\

\bf \begin{cases}
A=
\begin{array}{llll}
\textit{original amount}\\
\textit{already compounded}
\end{array}
\begin{array}{llll}

\end{array}\\
pymnt=\textit{periodic deposits}\to &1200\\
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n=
\begin{array}{llll}
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\end{array}\to &1\\

t=years\to &12
\end{cases}

B)

let's say after 12years, she ended up with a value of say "P"
so.. now she's just sitting on P, making no more deposits to it
just taking whatever the compound 5% interest will give, thus

\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\qquad 
\begin{cases}
A=\textit{compounded amount}\\
P=\textit{original amount deposited}\to &\boxed{P}\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{again, is only once}
\end{array}\to &1\\

t=years\to &11
\end{cases}


C)

from A) she made 1,200 every year, for 12 years that's 1200*12, that's how much she put out of pocket, if you got an amount P from A), then the interest is just the difference, or P - (1200*12)

from B), she started with an original amount of P, and ended up with a compounded amount of A after 11years, so the interest is just also the difference, or A - P

add those two folks together, and that's the total interest she got for the 23  years



4 0
4 years ago
6 - 0.617. WHAT IS SIX MINUS 0.617​
Reil [10]

Answer:

5.833

Step-by-step explanation:

SIX MINUS 0.617 IS 5.833

6 0
3 years ago
Identify the sequence as arithmetic, geometric, or neither. 1.6, 0.8, 0.4, 0.2, . . .
Roman55 [17]
The sequence is a geometric sequence, because there is no common difference between the 4 terms. We would multiply by \frac{1}{2} to get to the next term, therefore proving it to be a geometric sequence.
5 0
3 years ago
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dem82 [27]

Answer:

y = 1/3x + 1

Step-by-step explanation:

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4-3/9-6

1/3.  slope = 1/3 = m

2. plug the values into the equation to find y-int. You can use whichever point is given to you

I'll use (6,3)

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3. subtract 2 from both sides and you get b

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So, the equation of the line would be

y = 1/3x + 1

7 0
4 years ago
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