Maria put trim around a banner that is the shape of a triangle. Each side is 18 inches long. Maria has 3/2 foot of trim left. What was the length of the trim when she started? Enter your answer in yards .

We have been given that Maria put trim around a banner that is the shape of a triangle. Each side is 18 inches long.

First of all we will find the perimeter of our given triangle.

We know that perimeter of a triangle is sum of its three side lengths. Since each side of triangle has same measure, so its perimeter would be 3 times its side length.

We know that 1 feet is equal to 12 inches.

To convert 54 inches into feet, we will divide 54 by 12.

Since Maria has foot of trim left, so we will add it to perimeter of triangle to get the length of trim when she started.

Therefore, the length of trim was 6 feet, when Maria started.

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)