Alittle on this math problem?

If you know Heron's formula, this is easy.

where is the semiperimeter of the triangle.

The area is also equal to half the product of the base and height of the triangle, which happen to be

so the answer is B.

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: b

step-by-step explanation: