A bag contains blue and pink balls. There are 8 more blue balls than pink balls. Identify the expression that represents the pro
2 answers:
Answer:
0.212
Step-by-step explanation:
Thinking process:
Let the b = the original blue balls in the bag
and p = the original number of pink balls in the bag
Thus,
the number of blue balls is more than pik balls, therefore:
b = 8 + p
and p = 5
therefore, b = 8 + 5
= 13
The total number of balls = b + p
= 5 + 13
= 18
Probability of person picking a blue ball, P(b) =
The probability that a person picks a pink ball without replacement = 18 - 1
= 17
=
The probability that a person will pick a blue ball and pick ball without replacement =
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Answer:
Step-by-step explanation:
We know that between 1 to 10 there are 5 even and 5 odd numbers.
We could get 4 even cards , 4 odd cards or 2 odd and 2 even cards
Let´s check all this combinations
Case 1: When all 4 numbers are even:
We are going to take 4 of the 5 even numbers in the box so we have
Case 2: When all 4 numbers are odd:
We are going to take 4 of the 5 odd numbers in the box, so we have
Case 3: When 2 are even and 2 are odd:
We are giong to take 2 from 5 even and odd cards in the box so we have
Remember that we obtain the probability from
So we have the number of favourable outcomes but we need the Total cases for drawing four cards, so we have that:
We are taking 4 of the 10 cards:
Hence we have that the probability that their sum is even
First, we obtain the gradient (slope) of the first parallel line
Recall that since both lines are parallel, we have that,
Thus
Hence, we can find the equation of the parallel line given that it passes through the points (-4, -3)
Using