Use the area of rectangle formula which is:
Given that:
Substitute in the formula:
Distribute 8 in the expression:
Move -40 to another side and change from -40 to 40.
Then move 8 to divide 56, leaving only x.
Hence, the answer is:
Answer:
The required probability is 0.1.
Step-by-step explanation:
red balls = 3
yellow balls = 2
blue balls = 5
Selected balls = 5
Number of elemnets in sample space = 10 C 5 = 1260
Ways to choose 1 red ball and 4 other colours = (3 C 1 ) x (7 C 4) = 105
Ways to choose 5 balls of other colours = 7 C 5 = 21
So, the probability is