Primary school is grades k-6 (or k-5 in some cases) and secondary school is grades 7-12 (or 6-12 in some cases).
The lights are red so the cars are not moving which means it’s safe to cross the road. so the children can cross
....Do you mean What can be used to make a black hole? thats easy a black marker and a dark blue marker. :P or blue and black pens
Answer:
I think it is 45
n = number of rolls = 150
p = probability of rolling a “1” = 0.3
n*p = expected number of “1”s that show up out of the 150 rolls
n*p = 150*0.3
n*p = 45
Explanation:
hope this helps if not let me know
