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IrinaVladis [17]
3 years ago
11

5 of 10

Mathematics
1 answer:
horrorfan [7]3 years ago
3 0

Answer:

T-6÷2+5

Step-by-step explanation:

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Answer:

Pythagorean theorem:

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x^2 = 225

x = sqrt(225) = 15

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3 years ago
The school owns 2 classroom sets of 30 calculators each, which students are required to have during their mathematics class. The
sattari [20]
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3 years ago
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zhenek [66]

Answer:

what si the questions

Step-by-step explanation:

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3 years ago
A box is to be constructed from a sheet of cardboard that is 20 cm by 50 cm by cutting out squares of length x by x from each co
Nezavi [6.7K]

We are given the dimensions of the box:

l = 50 cm

w = 20 cm

 

We know that the volume of a box is:

V = l w h

where h = x

 

However since x cuts is made on both all sides of the box, therefore the new dimensions would be:

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<span>To get the maxima value, we get the 1st derivative of the function then set dV/dx = 0 to solve for x:</span>

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Transpose 1000 to the right side and divide everything by 12:

x^2 – (280/12)x = -(1000/12)

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x – (280/24) = ±7.26

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x = 4.40 cm

 

Calculating for the volume:

V = (50 – 2*4.4) (20 – 2*4.4) (4.4)

<span>V = 2030.34 cm^3</span>

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3 years ago
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