67-78+26+39×2 answer thy question brothers im none smart

Remember to follow PEMDAS and the "left-to-right" rule

39 x 2 = 78

67 - 78 = -11

-11 + 26 + 78

Combine

(-11 + 26) + 78

15 + 78

93 is your answer

hope this helps

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)