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Anestetic [448]
3 years ago
13

Refer to Expression 1 and Expression 2.

Mathematics
1 answer:
DanielleElmas [232]3 years ago
5 0
The answer would be -345 because you multiply first, then add, and last subtract.
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Diana invested $3000 in a savings account for 3 years. She earned $450 in interest over that time period. What interest rate did
In-s [12.5K]
\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\qquad 
\begin{cases}
I=\textit{interest earned}\to &\$450\\
P=\textit{original amount deposited}\to& \$3000\\
r=rate\to r\%\to \frac{r}{100}\\
t=years\to &3
\end{cases}
\\\\\\
450=3000\cdot r\cdot 3\implies \cfrac{450}{3\cdot 3000}=r\implies \cfrac{1}{20}=r
\\\\\\
r\%\implies \cfrac{1}{20}\cdot 100\implies r=\stackrel{\%}{5}
5 0
4 years ago
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Find the perimeter of a rectangle when it’s length is three times it’s width and the area is 108
Natasha2012 [34]

Answer:

Step-by-step explanation:

Let w = width

 

Then 3w = length

 

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108 = 3w2

 

36 = w2

 

6 = w   18 = length  Perimeter = 2(6) + 2(18) = 48 in

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3 years ago
Area of right angle triangle is 54 cm2. if one of its leg is 12 cm fine the perimeter
Molodets [167]
The perimeter of the right angled triangle should be 36cm, hope this helps:)
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1/6+3/7=? What does it equal
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The answer is \frac{25}{42}
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If there are n ways of completing a task, and after completing the task in any of these n ways, there are m ways of completing a
mel-nik [20]

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nm

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n × m = nm ways

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