It might be B or D, your welcome for the help
Answer:
The footprints at Laetoli were remarkably well-preserved because: they were made in an ash slurry that quickly hardened and were then buried by volcanic ash soon after they formed .
Explanation:
Laetoli -
It is the archaeological site present in the region of northern Tanzania .
In this site the footprint of the ancient humans are preserved , because of the volcanic eruption .
Around 3.85 million years ago , a volcanic eruption took place , and due to the ash fall of the eruption , the foot prints of the ancients got preserved .
Answer:
jargon
Explanation:
He knows the word and she doesnt
He defines knowledge as the connection and agreement
Make equations first
Consider bigger number is X and smaller number is Y
condition 1,
3X+3Y = 34----------eq 1
condition 2,
2X-5Y = 9-------------eq 2
multiply eq 1 by 2 and eq 2 by 3,
6X+6Y = 68
6X-15Y = 27
Substracting above equation,
21Y = 41
Y = 41/21
Substituting Value of Y in eq 1,
3X+3×41/21 = 34
3X = 34-41/7
3X = (238-41)/7
3X = 197/7
X = 197/21
Hence X = 197/21 and Y = 41/21