<span>There are no like terms.
If that's what your question is...
Not sure but hope I helped a bit.</span>
If the number of bacteria

is a function only of temperature

, and the temperature

is a function only of time in hours

, then

I need to see a picture of the marbles to answer this question
Answer: AD = 9cm
Step-by-step explanation: This is a 30-60-90 triangle, so the hypotenuse is equal to twice the length of the short side of the right angle.
BC is the short side of the large triangle, so AB, the hypotenuse of the large triangle is 2×6, 12 cm
BC is also the hypotenuse of the small triangle, ΔBCD, so it is twice the length of BD, to that makes BD = 6/2= 3
Subtract BD from AB.
That's 12 - 3 = 9 the length of AD