Write an expression for the perimeter of the triangle shown below:

a triangle is shown with side lengths labeled 0.3x plus 24, 5x, and 0.2x minus 15.

10x − 9
10x − 39
5.5x − 9
5.5x + 9

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)

answer: i'm not sure

step-by-step explanation: