Mark studies a group of 30 whales. if each whale weighed approximately 3.8 x 105  pounds, find the total weight of all 30 whales. express your answer in scientific notation.

Step-by-step explanation:

If each whales weighed

Then 30 whales weighed

Applying the law of indices we obtain

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)

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7