the perimeter of triangle ABC is 19. triangle ABD and triangle AEC are formed by joining the vertices of triangle ABC with midpoints of their opposite sides. the perimeter of triangle ABD is smaller by 2 than the perimeter of triangle AEC. what is the length of BC?

I got 6.3

Step-by-step explanation:

Hope this helped!

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:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.