If each letter in the sums below represents a different positive integer, then c=
a + b + c = 7
c + d + e = 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)

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

answer: idk wbu

step-by-step explanation: umm..

a reflection across the x axis and a 90 degree rotation left and right.