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3 years ago

14

Which substance has been changed most over time from its original plant material?

2 answers:

juin [17]3 years ago

6 0

Answer:

the answer is b

Step-by-step explanation:

Contact [7]3 years ago

4 0

The answer to this is B. anthracite coal. Organic matter gradually turns into coal over many years of high pressure and temperature under the earth. The lowest form of coal is peat (where it is still recognizably plant matter), followed by lignite, then sub-bituminous coal, then bituminous coal, then anthracite. These are also ordered from lowest to highest composition of carbon.

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-30=-16+N what is he answer to this

tankabanditka [31]

Answer:

N= -14

Step-by-step explanation:

first you add 16 to both sides, then -30 + -16 = -14

5 0

2 years ago

Write a piecewise function for the graph

netineya [11]

Answer:

You can used it to help me out with a good time with this and

Step-by-step explanation:

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3 years ago

Liz flips a coin 30 times. The coin lands heads up 21 times and tails up 9 times. Complete each

SSSSS [86.1K]

Answer:

$Pr = 0.50$

Step-by-step explanation:

Given

$n = 30$

$H = 21$

$T = 9$

See attachment for complete question

Required

$P(H)$

The question requires that we calculate the theoretical probability of landing on the head.

This means that, we have to ignore the given data, and we use the following

$S =\{H,T\}$ --- sample space

$n(S) = 2$ --- sample size

$n(H) = 1$ --- occurrence of Head

So, the theoretical probability is:

$Pr = n(H)/n(S)$

$Pr = 1/2$

$Pr = 0.50$

8 0

2 years ago

Which answer shows 2.13786x 104 written in standard form?

Nataly_w [17]

Answer:

answer

Step-by-step explanation:

The proper answer to this question is "21378.6".

Reason:

2.13786 *10^4

7 0

2 years ago

2. Generalize How is adding and subtracting

AleksAgata [21]

Answer:

adding and subtracting decimals is similar to adding and subtracting decimals because for both you add and sub both #s

Step-by-step explanation:

4 0

3 years ago