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Elenna [48]
3 years ago
14

1. On a construction site, the workers excavated 30,000 cubic feet of dirt. How many cubic meters did they excavate? A. 84.9 B.

1,050 C. 849 D. 105
Mathematics
2 answers:
Marat540 [252]3 years ago
7 0

Answer:

Step-by-step explanation:

Alright, lets get started.

Since we know,

3.28084 feet = 1 meter

So,

1 feet = \frac{1}{3.28084} meter

1 cubic feet= \frac{1}{3.28084} *\frac{1}{3.28084}* \frac{1}{3.28084}cubic meters

Hence

1 cubic feet = 0.0283168 cubic meters

So, 30000 cubic feet = 30000*0.0283168 = 849.5 cubic meters

hence the answer is 849 cubic meters. :   Answer

Hope it will help :)

m_a_m_a [10]3 years ago
4 0
The answer is 849.5, C is the correct answer
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Y''+y'+y=0, y(0)=1, y'(0)=0
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Step-by-step explanation:

A second order linear , homogeneous ordinary differential equation has form ay''+by'+cy=0.

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y=\frac{-1\pm \sqrt{1^2-4}}{2}=\frac{-1\pm \sqrt{3}i}{2}

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On differentiating with respect to t, we get

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