The mass of mars is about 6.421x10^20 metric tons. the mass of the sun is about 1.998x10^27 metric tons. about how many times the mass of mars is the mass of the sun? give your answer in scientific notation.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

pretty sure 750 each month!

step-by-step explanation: