A new sidewalk will be 6 feet wide, 260 feet long, and filled to a depth of inches (0.75 foot) with concrete. How many cubic yards of concrete are needed?

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

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)

dude thats to long figure it

step-by-step explanation:

i hope this is what you were looking for.

see attached graph