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andrey2020 [161]
3 years ago
13

I need help I don't understand

Mathematics
2 answers:
yawa3891 [41]3 years ago
5 0

Answer:

She would charge $39 for 6.5 hours of cleaning

Step-by-step explanation:

Set it up as a proportion: 4.5/27 = 6.5/x

denis23 [38]3 years ago
3 0
39.
27 divide 4.5 = 6

f(x)=6x
x = hours
f(6.5)=6(6.5)
f(x) = 39
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I'm sorry but these are the multiple choice answers.
Sunny_sXe [5.5K]
\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 \qquad 
\begin{cases}
A=
\begin{array}{llll}
\textit{original amount}\\
\textit{already compounded}
\end{array}&
\begin{array}{llll}

\end{array}\\
pymnt=\textit{periodic payments}\to &200\\
r=rate\to 7\%\to \frac{7}{100}\to &0.07\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, four quarters}
\end{array}\to &4\\

t=years\to &12
\end{cases}
\\\\\\
A=200\left[ \cfrac{\left( 1+\frac{0.07}{4} \right)^{4\cdot 12}-1}{\frac{0.07}{4}} \right]
7 0
3 years ago
When it rains I get tired. It's raining today. I'm going to take a nap.
tankabanditka [31]

Answer:

None of the Above

Step-by-step explanation:

Hope this helps

7 0
3 years ago
One bar of candy A and two bars of candy B have 774 calories. Two bars of candy A and one bar of candy B contains 786 calories.
vampirchik [111]
◆ Define the variables:

Let the calorie content of Candy A = a
and the calorie content of Candy B = b

◆ Form the equations:

One bar of candy A and two bars of candy B have 774 calories. Thus:

a + 2b = 774

Two bars of candy A and one bar of candy B contains 786 calories

2a + b = 786

◆ Solve the equations:

From first equation,
a + 2b = 774
=> a = 774 - 2b

Put a in second equation
2×(774-2b) + b = 786
=> 2×774 - 2×2b + b = 786
=> 1548 - 4b + b = 786
=> -3b = 786 - 1548
=> -3b = -762
=> b = -762/(-3) = 254 calorie

◆ Find caloric content:

Caloric content of candy B = 254 calorie

Caloric content of candy A = a = 774 - 2b = 774 - 2×254 = 774 - 508 = 266 calorie
5 0
3 years ago
To join a local square dancing group, Jan has to pay a $100 sign-up fee plus $25 per month. Write an equation for the cost (y) b
klasskru [66]

Answer:

y = $100 + $25x

Step-by-step explanation:

y is the total cost

x is the number of months

The sign up fee is $100.

Each month would cost an additional $25 per month.

The total cost then would be the sign up fee plus the $25 for each month. Since we do not know the number of months, we will assign x.

So the equation would be:

y = $100 + $25x

3 0
3 years ago
Help me with this question
soldi70 [24.7K]
  • Radius=4.2m

\\ \bull\tt\dashrightarrow Diameter=2(Radius)

\\ \bull\tt\dashrightarrow Diameter=2(4.2)

\\ \bull\tt\dashrightarrow Diameter=8.2m

3 0
3 years ago
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