A radioactive substance decays at a rate of 10% per hour. which equation can you use to 5% of the substance left after 3 hours? A.) f(3)=3(0.90)10
B.) f(3)=10(0.90)3
C.) f(3)=100(0.10)3
D.) f(3)=100(0.90)3

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.

answer are

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.