Answer:
r3
Step-by-step explanation:
r
Answer:
Step-by-step explanation:
x+y>0, x>0, when y=0
x+y<-5 x<-5 when y=0
since the sign is only< then it is dotted line, and since one is greater and is less than they actually do not intersect
Given are three married couples.
So, let us assume there are 3 men and 3 women
They are sitting in a row of 6 empty seats
There is a definite order constraint that each woman will sit left to her husband. The first woman gets 3 options to choose from 3 available seats. The second woman has two options left as already one seat is filled by the first woman. The last woman has one option left. So, it is 
So, number of ways is 3! =
= 6 ways.
Answer:
50
Step-by-step explanation:
a triangle's sum of all angles is 180 degrees
so a+b+c=180
we know c=80
and a=b
so that'll be
2y+80=180
subtract 80 from each side
2y=100
divide by 2
y=50