A x squared + b x + c. An x is drawn with a c in the top half and b in the bottom half.
Factor x2 – 8x + 15.

what i would say the best answer is a. 40.5

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)