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frutty [35]
3 years ago
10

1

Mathematics
1 answer:
lesya692 [45]3 years ago
7 0
First, change 771 to an easier number such as 770.
Then, multiply 770 by 50 which would be 38500.
The refrigerators would cost approximately $38,500.
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0.4 / 17= what i need help this is ilx ​
Dvinal [7]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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The perimeter of a playing card is 34 centimeters. It is 10 centimeters tall. How wide is it
mamaluj [8]

Answer:7

Step-by-step explanation: 10 +10 +x+x=34

                                               20+2x= 34

                                               -20            20

                                                       2x=14  x=7

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Solve the following quadratic equation:
Advocard [28]

Answer:

-3.5 or -6

Step-by-step explanation:

2x^2+19x+40=-2

2x^2+19x+40+2=0

2x^2+19x+42=0

2x^2+(12+7)x+42=0

2x^2+12x+7x+42=0

2x(x+6)+7(x+6)=0

(x+6)(2x+7)=0

either,

x+6=0

x=-6

or,

2x+7=0

2x=-7

x=-7/2

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4 0
3 years ago
How do u solve y=2/3x-4
poizon [28]
The answer is 2 y= 2 so 3•2=6 6-4=2
4 0
3 years ago
A packing box has the dimensions 3 by 2 by 5 1/2 feet. What is the volume of the box?
dem82 [27]
As already mentioned, the volume for a rectangular prism, namely a box in this case, is just the product of its dimensions, length * width * height.

\bf \textit{volume of a rectangular prism}\\\\
V=LWH\quad 
\begin{cases}
L=length\\
W=width\\
H=height\\
------\\
L=3\\
W=2\\
H=5\frac{1}{2}
\end{cases}\implies V=3\cdot 2\cdot 5\frac{1}{2}
\\\\\\
V=3\cdot 2\cdot \cfrac{5\cdot 2+1}{2}\implies V=6\cdot\cfrac{11}{2}\implies V=3\cdot \cfrac{11}{1}
\\\\\\
V=33

now, as far as another one... hmm is easier if you post in the channel, that way I can include any graphs if needed or tables and such.

so, what happens if you double up the dimensions?

\bf \textit{volume of a rectangular prism}\\\\
V=LWH\quad 
\begin{cases}
L=length\\
W=width\\
H=height\\
------\\
L=6\\
W=4\\
H=10
\end{cases}\implies V=6\cdot 4\cdot 10\implies V=240\\\\
-------------------------------\\\\
\begin{cases}
L=6(2)\\
W=4(2)\\
H=10(2)
\end{cases}\implies V=6(2)8(2)10(2)\implies V=(2)(2)(2)6\cdot 8\cdot 10
\\\\\\
V=(8)6\cdot 8\cdot 10\implies V=(8)\stackrel{original~volume}{240}

notice, how many times the new size is, is 8 times the original.
6 0
3 years ago
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