C=3.14r^2 that's the formula a
Let Cynthia's age be C, then Abigail's age A
since Abigail is 8 years older, her age A = C+8.
20 years ago Cynthia's she was C-20 and Abigail was A-20=3(C-20)
A-20=3C-60
A=3C-40
but we just said A=C+8
so 3C-40=C+8
2C=48
C=24
A=24+8=32
Cynthia's age is 24 and Abigail's age is 32
Answer: no.
Step-by-step explanation: In reaction Pb -> PbSO4 Pb is oxidised
Losing two electrons
Answer:
PERFECT
YOU GOTTA RIGHT
Step-by-step explanation: