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worty [1.4K]
2 years ago
15

20 points and brainliest. Please help me.

Mathematics
1 answer:
motikmotik2 years ago
3 0

Answer:

una

Step-by-step explanation:

4/20=.20

.20 per pencil

hope this helps, brainliest appreciated

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10m^2 of tiles cover a pool, the pool is shaped as a square, so all four edges are the same, and the depth is constant but not e
nignag [31]
Assume:

Size of sides = x m
Depth of the pool = y m

Therefore, surface area = x^2+4xy =10 m^2

Then, y = (10-x^2)/(4x)

Now,
Volume (V) = x^2*y = x^2*y =x^2(10-x^2)/4x = (10x-x^3)/4 = 1/4(10x-x^3)
For maximum volume, first derivative of volume function is equal to zero.
That is,
dV/dx =0 = 1/4(10-3x^2)
Then,
1/4(10-3x^2) = 0
10-3x^2 = 0
3x^2=10
x= sqrt (10/3) = 1.826 m
And
y= (10-1.826^2)/(4*1.826) = 0.913 m

Therefore,
V= 1.826^2*0.913 = 3.044 m^3
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3 years ago
How many odd numbers are greater than 30 and<br> less than 40?
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Karen wants to know how fast her sunflower willgrow. Right now, her sunflower is 3 3/8 inches tall. Ifher sunflower grows 5/8 of
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I answered your first question, and you said it was right, so I will not do it again.

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