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Genrish500 [490]
3 years ago
5

How do you write three hundred four million,eight hundred thousand,four hundred

Mathematics
1 answer:
Katena32 [7]3 years ago
5 0
300,800,400
Million, thousand, hundred
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A pharmacist has 80 milliliters of a 25% saline solution. Which expression can be used to find the percentage concentration of t
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0.25 and y=80.01%. And the rest are wrong.
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Which graph represents the solution of the system:<br><br> y=3y=2x−1
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The second graph

Step-by-step explanation:

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You have a grade of 85 &amp; 90
faltersainse [42]

Answer:

You need to get a 95 on the next test to have a 90 grade average.

Step-by-step explanation:

(85 + 90 + n)/3 = 90

<u>Step 1:  Multiply both sides by 3</u>

(85 + 90 + n)/3 * 3 = 90 * 3

85 + 90 + n = 270

<u>Step 2:  Subtract 85 from both sides</u>

85 + 90 + n - 85 = 270 - 85

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Number 11 please help 10 points no links pleAse
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C

Step-by-step explanation:

The question states he wants to show the relationship between the trees ages and the number of apples they produce.

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2 years ago
Use differentials to estimate the amount of paint needed to apply a coat of paint 0.07 cm thick to a hemispherical dome with dia
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An hemispherical dome is half a sphere. If the diameter is 60 m, then the radius is 30 m.

We can use differentials to solve this problem because we are adding a thin layer to the original dome, so the volume of the dome in increased by a differential of itself.

This differential volume that the dome is increased is equal to the volume of the coat of paint.

The volume of the dome can be written as:

\begin{gathered} V=\frac{4\pi}{3}r^3 \\ \frac{dV}{dr}=\frac{4\pi}{3}\cdot3r^2\Rightarrow dV=\frac{4\pi}{3}\cdot3r^2\cdot dr=4\pi r^2\cdot dr \end{gathered}

Now, we can calculate dV as:

\begin{gathered} dV=4\pi r^2\cdot dr \\ dV\approx4\cdot3.14\cdot(30m)^2\cdot0.07\operatorname{cm}\cdot\frac{1m}{100\operatorname{cm}} \\ dV\approx12.57\cdot900m^2\cdot0.0007m \\ dV\approx7.92m^3 \end{gathered}

Answer: the paint needed for this coat is approximately 7.92 m^3

5 0
1 year ago
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