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kirill115 [55]
3 years ago
12

I need help with both please .

Mathematics
1 answer:
PtichkaEL [24]3 years ago
6 0
< for the first one. 3.4<4.0<4.2 for the second
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The amount of water in a bottle is reduced by 85% to 120 ml. How much water was originally in the bottle?
sveta [45]
At first it was 100%. When it was reduced by 85%, it became 25%. The 25% represents 120 ml. So 100% would be (120/25) × 100 = 480 ml.
4 0
4 years ago
A water tank has a square base with each side of length 4 meters. Water enters through a hose at a constant rate of 20 liters pe
dmitriy555 [2]

Answer:

378.33 minutes

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From the question, we're told that

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64,000 + [∫(20 - t) dt from 0 to t] = 0, solving the integral, we have

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t = 378.33 minutes

4 0
3 years ago
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goldenfox [79]
-\frac{1}{6}b = 3\\\\-\frac{1}{6}b\times -6 = 3\times -6\\\\ b = -18
7 0
4 years ago
3 A circle centered at the origin has a radius
tankabanditka [31]

Step-by-step explanation:

x = 7 cos 210 = 7×(-½√3) = -3.5√3

y = 7 sin 210 = 7×(-½) = -3.5

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8 0
3 years ago
The base of a prism is a regular hexagon with the perimeter of 78mm the height of the prism is 16mm what is the area of one of t
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3 0
4 years ago
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