Answer:
a) the varying densities are to be considered with respect to position
Step-by-step explanation:
the complete answer is found in the attachment
The Answer is $9.00 because if you just add 4.50 to 4.50 it is $9:00.
5/6......5 out of 6.......using division, it is 5 divided by 6 = 0.833
It would be 56 seconds until both flicker at the same time
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