Answer:
please mark me brainlist
Step-by-step explanation:
p = proportion of residents qualified for discounts = 0.70
Sample size = 20
If X is the no of residences selected for discounts then x is binomial with (20,0.7)
P(X>=12) = 0.8867
Answer:
A) no real solutions
Step-by-step explanation:
No real solution. in order to x+1 by itself you must square root both sides. that would mean square rooting -5 which creates an imaginary number. so there are no real solutions. Also cause even if x was a negative, when you'd square it, you'll always get a positive.
I believe it would be 30 total handshakes because there's 6 people and they all must shake hands with 5 other people (they can't give themselves a handshake) and 5 multiplied by 6 is 30
5*7x/7-1x
35x/7-1x
5x-1x
4x
(you can also do 7x/7 first)
Hope this helps