a. Use the inclusion/exclusion principle.
b. By definition of conditional probability,
Step-by-step explanation:
standard form of
1 . = x⁴-2x ²+3
2. = 5m³- 3m²+ 9m -7
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Answer: 4:1
Step-by-step explanation: I think the answer is 4:1. I think this because 20% of 2500, would be 500. So 2500-500=2000. So the ratio would be 2000:500. Then we simplify 2000:500, by dividing 2000 by 500, and dividing 500 by 500. 500 / 500 = 1. 2000 / 500 = 4, so the answer is 4:1. (I am sorry if I am incorrect)
