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pogonyaev
3 years ago
15

What is the value of -3/4 ÷ (-3 1/4)​

Mathematics
1 answer:
aivan3 [116]3 years ago
8 0
Nothing because itz nothing
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8 is 16% of what?<br> Complete the sentence
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50

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the five performers who will present their comedy acts this weekend at a comedy club how many different ways are there to schedu
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First day 1 in morning after noon and night next day one in morning and night
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What type of function is y=7(5/4)^x
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If an open box has a square base and a volume of 115 in.3 and is constructed from a tin sheet, find the dimensions of the box, a
Karolina [17]
Let h = height of the box,
x = side length of the base.

Volume of the box is  V=x^{2} h = 115. 
So h = \frac{115}{ x^{2} }

Surface area of a box is S = 2(Width • Length + Length • Height + Height • Width).
So surface area of the box is
S = 2( x^{2}  + hx + hx)  \\ = 2 x^{2}  + 4hx  \\  = 2 x^{2}  + 4( \frac{115}{ x^{2} } )x
= 2 x^{2} + \frac{460}{x}
The surface are is supposed to be the minimum. So we'll need to find the first derivative of the surface area function and set it to zero.

S' = 4x- \frac{460}{ x^{2} }  = 0
4x = \frac{460}{ x^{2} }  \\  4x^{3} = 460  \\ x^{3} = 115  \\ x =  \sqrt[3]{115} = 4.86
Then h=  \frac{115}{4.86^{2}} = 4.87
So the box is 4.86 in. wide and 4.87 in. high. 

5 0
3 years ago
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What is 2/5 + + 2/5 + 2/5<br> (2/5 times 3)<br><br> Ty
yuradex [85]

Answer:

6/5 or 1 1/5

Step-by-step explanation:

2/5 + 2/5 + 2/5 = 6/5 or 1 1/5

This is the same as multiplying 3 x 2/5 = 6/5 or 1 1/5

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2 years ago
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