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azamat
3 years ago
14

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

Mathematics
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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Joanna ran a mile in physical education class. After resting for one hour, her heart rate was 60 beats per minute. If her heart
Ugo [173]
So, if 60 beats was decreased by 2/5 before, we know that 60 beats = 3/5 of her heart rate after she ran the mile.

(Because 1 - 2/5 = 3/5)

So, 3/5 = 60, and we're trying to find 1.

So I would first divide both sides by 3.

3/5 = 60
/3      /3

1/5 = 20

Then multiply both sides by 5.

1/5 * 5 = 20 * 5

1 = 100

So her heart rate was 100 beats per minute immediately after she ran the mile.
4 0
3 years ago
ajoke needs 400000 for her tuition. if her bank gives a 9% 180 day loan notes, with interest compounded daily, what would she ow
Lisa [10]

Answer:

Very hard question i don't help you

4 0
2 years ago
Evaluate 8+6÷2+(2+10) help and work with answer please
Svetradugi [14.3K]

Answer:

23

Step-by-step explanation:

P E M D A S

8+6÷2+(2+10)

P)

8+6÷2+(2+10)

8+6÷2+(12)

E)

M)

D)

8+6÷2+(12)

8+3+12

A)

8+3+12

11+12

S)

The final answer is 23.

3 0
3 years ago
Read 2 more answers
6, 3, 4, 7, 3, 7, 8, 5, 7 i. Find the median ii. Find the mean iii. Find the modal mark
4vir4ik [10]

Answer:

i. 6

ii. 5\frac{5}{9}

iii. 7

Step-by-step explanation:

First organize the data from least to greatest.  3,3,4,5,6,7,7,7,8

To find the median, remove the extremes from the data over and over.

3,4,5,6,7,7,7

4,5,6,7,7

5,6,7

6

To find the mean, add all of the numbers and divide by 9

3+3+4+5+6+7+7+7+8=50

50/9=5\frac{5}{9}

To find the modal mark, simply find the number present most in the data set: 7(occurs 3 times)

Hope it helps <3

3 0
3 years ago
I need help to solve this problem p/0,05p
AfilCa [17]

p / 0.05p

= 1 / 0.05

= 20  answer

7 0
3 years ago
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