A. (7/13)·(1/3)=7/39. P=7/39
B. (6/13)·(2/3)=12/39. P=12/39
C. (7/13)·(2/3)=14/39. P=14/39
D. (6/13)·(1/3)=6/39. P=6/39
All the numbers from Bag B were written as thirds cause their probabilities could be simplified to make multiplying easier
Answer:
Step-by-step explanation:
We can see the fractions 
and 
of cups.
It can be seen that denominator has 4 i.e. the fraction 
.
Let us suppose, a unit is equal to 
of a cup.
Susan was supposed to use of a cup.
i.e. 5 units of butter was to be used.
But, actual recipe has only 3 units of butter.
a. 
Alternatively, we could have directly divided the given fractions:
Answer:
y = 110
z = 70
Step-by-step explanation:
Answer: 17/19
Step-by-step explanation:
Number of red rocks = 6
Number of orange rock = 1
Number of blue rocks = 4
Number of white rock = 1
Number of yellow rocks = 7
Total number of rocks = 19
Probability of not getting a orange the first time will be (1 - 1/19) = 18/19.
Probability of not getting an orange the second time will be: (1 - 1/18) = 17/18
Probability of not getting an orange on both occasion will be:
= 18/19 × 17/18
= 17/19
