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hailenardos5
12.11.2020 •
Mathematics
Based on recent experience, ten-year-old passenger cars going through a motor vehicle inspection station have an 80% chance of passing the emissions test. Suppose that two hundred such cars will be checked out next week. Find the number of cars that are expected to pass.
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Ответ:
160
Step-by-step explanation:
The chance/probability of 10-year-old passenger cars passing an emission test is 80%.
200 10-year-old passenger cars will be tested next week.
How many of the 200 cars are expected to pass the emission test?
If there is an 80% chance of them passing the test then it means that 80% of the cars pass the test at any given time.
80% of 200 = 0.8 × 200 = 160
Hence, 160 (of the 200) cars are expected to pass the test.
Ответ:
X=181. ???
Step-by-step explanation:
123+58=181