15 house holds have a dog
5 cat cards, 6 dog cards......total of 11 cards
he picks a dog on first try
does not replace card....so there are now 5 dog cards and a total of 10 cards..so the probability of picking another dog card is : 5/10
You would add 6+3 which equals 9 and then you would divide 111/9 and you get 12.33333...
So he bought 12 books
At least = 3 or more
x = slices of bread
x ≥ 3
the "≥" means greater than or equal, which basically means at least
As the three longitudinal lines are parallel:
angle 4 = 5 = 6 = 82 degree (corresponding angles) = 9 = 8 = 7 = 82 degrees (vertical angles)
and
angle 11 = 180-82= 98 degrees (linear pair)
so:
angle 10 = 11 = 12 = 98 degrees (corresponding angles) = 3 = 2 = 1 = 98 degrees (vertical angles)
.
hope you got it