What is the midpoint of (1,-1) and (4,-6)

(5/2, -7/2)

Step-by-step explanation:

The midpoint is the average value of each coordinate

(1+4)/2 , (-1-6)/2

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)

step-by-step explanation:

b and c