The probability of rain is 2/5, what is the complementary event and its probability?
1 answer:
You might be interested in
Answer:
Then the answer is C
Step-by-step explanation:
1) Set a linear equation
2) Cross multiply
3) Multiple the right side
4) Divide both side by 2
5) Solving the linear equation
The answer is (C)
To divide fractions, you would multiply the reciprocal. What this means is that you would flip the fraction, so if you flip the fraction 35/48, that is 48/35. And because we flipped it, we now need to multiply it with the other fraction. This would be 
. Now we can use cross multiplication to simplify. We can see that 48/24 is 2, and 2/1 = 2. So we can replace 48 with 2, and 24 with 1. Now we can also see that 35/7 = 5, and 5/1 = 5. So we can replace 35 with 5 and 7 with 1. So our new fractions are 
. And therefore your answer is D. 2/5. Hope this helps. Feel free to ask more questions, or ask questions about my explanation.