.

ok so when it shows something like this, also what is 45 divided by 15? it's pretty obvious to see because add this 15+15+15=45 so, three would be the answer that you need or think of it this way when it says when y=45 you about dividing the the 2 numbers to your answer

Step-by-step explanation:

Hope that I could you

have a great day :)

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)