Question

If A and B are two points whose
– 2a
.
co-ordinates are and S
t2
is a point (a,0) then SA +
1
SB
A a
B
- a
C
1
a
D
1
1
a​

Answer 1

Answer:

Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called ... The largest consumer and importer of coal is China.

Step-by-step explanation:

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