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PilotLPTM [1.2K]
2 years ago
9

Which of the following functions has a vertex of (-1,2)?

Mathematics
1 answer:
Firlakuza [10]2 years ago
6 0

Answer:

f(x) , r(x), t(x)

Step-by-step explanation:

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A total of $7000 is invested: part at 8% and the remainder at 12%. How much is invested at each rate if the annual interest is $
Ivahew [28]

We invested $7000 invested in two accounts, we don't know how much exactly is in each account, therefore we will assign variables to these amounts. The amount invested in the "8%" account is "x", while the other one is "y". The sum of these two numbers must be equal to $7000, therefore:

x+y=7000

The sum of interest of each account should be equal to 580, therefore:

0.08\cdot x+0.12\cdot y=580

We need to solve the system in order to determine the values.

\begin{gathered} \begin{cases}x+y=7000 \\ 0.08x+0.12y=580\end{cases} \\ \begin{cases}-0.12x-0.12y=-840 \\ 0.08x+0.12y=580\end{cases} \\ -0.04x=-260 \\ x=\frac{-260}{-0.04}=6500 \\  \end{gathered}

Now we can replace the value of "x" in the first equation to determine the value of "y".

\begin{gathered} 6500+y=7000 \\ y=7000-6500 \\ y=500 \end{gathered}

The values are 6500 in the 8% account and 500 in the 12% account.

4 0
1 year ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
Kisachek [45]

Answer: (A) vertical asymptote: x = 2, horizontal asymptote: y = 1

<u>Step-by-step explanation:</u>

f(x) = \dfrac{1}{x-2}+1

<u>Vertical Asymptote</u> is the restriction on the x-value.  The denominator cannot be zero, so x - 2 ≠ 0  ⇒  x ≠ 2

The restricted value on x is when x = 2  <em>which is the vertical asymptote</em>

<u>Horizontal Asymptote</u> (H.A.) is the restriction on the y-value.  This is a comparison of the numerator (n) and denominator (m).  There are 3 rules that will help you:

  • n > m    No H.A. (use long division to find slant asymptote)
  • n = m    H.A. is the coefficient of n divided by coefficient of m
  • n < m    H.A. is 0

In the given problem, n < m so y = 0, however there is also a vertical shift of up 1 so the H.A. also shifts up.  This results in H.A. of y = 1


5 0
3 years ago
A pair of shoes cost $40 is marked up by 25%. What is the RETAIL PRICE?
Nitella [24]
The retail price is $50 because 25% of 40 is 10 and 10+40=50.
8 0
3 years ago
Read the sentence below about the Chicago fire of 1871. The city of Chicago was restored quickly after the fire. Which revision
ICE Princess25 [194]

Answer:

A:The city of Chicago was restored after the fire of 1871, as many structures were rebuilt at a rapid pace.

Step-by-step explanation: credit to beverlymichelle in the comments

6 0
3 years ago
Help me please!!°-°​
masya89 [10]
It was complicated but I did it

4 0
3 years ago
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