What is the fourth vertex?

The three vertices of the rectangle are A(2,-1), B(5,-3), and C(7,0). Determine the fourth vertex co-ordinates. I first plotted the three lines, Ellena, which pairs I joined in order to start a rectangle was clear from their location. There was a mistake. You can verify that they are at this point and then proceed.

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)