P - q = 8.....multiply by -1
2p - q = 19
----------------
-p + q = -8 (result of multiplying by -1)
2p - q = 19
---------------add
p = 11
now we sub 11 in for p in either of the original equations to find q
p - q = 8
11 - q = 8
11 - 8 = q
3 = q
so ur solution is (11,3)
Answer:
P(roll a number less than 5)= 4/6= 2/3
Step-by-step explanation:
*A dice has 6 faces 1,2,3,4,5,6
*1,3,5 are faces with odd numbers
*2,4,6 are faces with even numbers
*we have four numbers that are less than 5: 1,2,3,4
so i would say the probability to roll a dice with a number less
than 5 is P=4/6=2/3
Consider the attached tree.
You start from the root, and with each level you create a sub-branch for each of the choices you have.
So, the root has two children, white and multigrain bread.
Each of those children has three children, because you have three meat choices
Each of those children has two children, because you have two cheese choices.
Then, you identify all the sandwiches by choosing a leaf, and read the label that lead you there.
For example, leaf number 4 represents a sandwich with white bread, turkey and provolone.