Answer:
12:07pm
Step-by-step explanation:
first common multiple of 60 and 70 is 420
420 s = 7 mins
20
nPr = n!/(n-r)!
5P2 = 5!/(5-2)!
= 5!/3!
= 5×4×3!/3!
= 5×4
= 20
exact form: x=-1/2
decimal form: x=-0.5
