Round 673,422 to the nearest hundred.
2 answers:
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The score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
<h3>What is the average of a group of numbers?</h3>The average of the group of numbers is the ratio of the sum of all the numbers of the group to the total number of the group.
Lisa is currently taking physics as one of her electives in school.
Her grade at the end of the year is determined by the average of four exams, each worth 100 points.
- On her first test, she got an 84,
- On her second, she got a 92,
- On her third, an 80.
She got exactly 80% in the course. Let she scores x marks in her fourth exam. Thus,
Hence, the score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
Learn more about the average here;
Explanation:
The number of times the 6-sided number cube will be rolled will is
Let the numbers greater than 4 be represented below as
The number of sample space will be
The probability of rolling a number greater than 4 will be calculated below as
Hence,
To calculate the number of times a number greater than 4 will be rolled will be calculated below as
Hence,
The final answer is