The mean life time of sample of 100 fluorescent light bulbs produced by a company is computed to be 1570 hours with a standard d
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Using weighted average, it is found that she should score 67% on the computer science test.
- The weighted average is given by <u>each proportion multiplied by it's score</u>.
In this problem, the proportions and scores are given by:
- Proportion of 32% = 0.32 for a score of 300.
- Proportion of x for a score of 200.
- Proportion of 46% = 0.46 for a score of 300 + 200 = 500.
Then
She should score 67% on the computer science test.
A similar problem is given at brainly.com/question/24855677
Answer: B) 5
Step-by-step explanation:
The sum of two numbers is 17.
Let x and y be those numbers.
One number is 3 less than of the other number (y).
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We end up with these two equations.
Replace x in the first equation to find y.
Add 3.
Combine like terms.
Multiply by the reciprocal of the fraction next to y.
Now replace the value of y in any of the equations to find x.
Therefore, between 5 and 12, 5 is the lesser number.