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KATRIN_1 [288]
3 years ago
14

Why is earth known as diatomaceous Earth​???From biology

Mathematics
1 answer:
Svetllana [295]3 years ago
8 0

Answer:

Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons are made of a natural substance called silica. Over a long period of time, diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. Today, silica deposits are mined from these areas.

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Please help with this question if possible.
alexandr1967 [171]
Volume of the large pyramid = 1/3*(10)² *30= 1000 cm³
Height of the small pyramid that was cut = 30-15=15 cm
Volume of the small pyramid = 1/3*(5)²*15=125 cm³

Volume of the frustum = Volume large pyramid - volume small pyramid=
=1000-125=875 cm³
Answer is 875 cm³.

3 0
3 years ago
What are the exact values of sin theta cos theta tan theta if (3,-4) is a point on the terminal side of theta?
malfutka [58]
\bf (\stackrel{a}{3}~,~\stackrel{b}{-4})\impliedby \textit{now let's find the \underline{hypotenuse}}
\\\\\\
\textit{using the pythagorean theorem}
\\\\
c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}
\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
\end{cases}
\\\\\\
c=\sqrt{3^2+(-4)^2}\implies c=\sqrt{25}\implies \boxed{c=5}

\bf -------------------------------\\\\
sin(\theta )=\cfrac{\stackrel{opposite}{-4}}{\stackrel{hypotenuse}{5}}\qquad cos(\theta )=\cfrac{\stackrel{adjacent}{3}}{\stackrel{hypotenuse}{5}}\qquad tan(\theta )=\cfrac{\stackrel{opposite}{-4}}{\stackrel{adjacent}{3}}
6 0
3 years ago
There is some evidence suggesting that you are likely to improve your test score if you rethink and change answers on a multiple
kiruha [24]

Answer:

trust none

Step-by-step explanation:

5 0
3 years ago
Hi w do you find c for standard normal distribution
siniylev [52]
You need to a table of the standard normal cumulative distribution 
Here is one:
https://math.ucalgary.ca/files/math/normal_cdf.pdf

the closest value I see is 0.85
5 0
3 years ago
Please help on this IXL assignment it is DUE TODAY PLEASE!!!!
Aliun [14]

ASSUMPTION: Since we are talking about fractions it looks like you have to simplify it. Again, its still a guess so Id assume..

16/12 = 4/3.. So It should be <em>h = 2 </em>

6 0
2 years ago
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