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Advocard [28]
3 years ago
14

Adam's average homework score, worth 40% of his grade, is 76%. His average unit test score, worth another 40%, was 81%. The fina

l makes up the rest of his total grade. What is the minimum number of questions he need to answer correctly on the 50-question final exam to earn a B (80%) in the class?
Mathematics
1 answer:
solniwko [45]3 years ago
8 0
He needs to answer 41 questions correctly.
The average of his original percentages in 78.5%. if you double 50 so it is on a scale out of a hundred, Adam has to get an 82% at least, or 41 questions.
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<h3><u>Speed determination</u></h3>

Since a private jet can fly 1134.6 miles against a 27-mph headwind in the same amount of time it can fly 1469.4 miles with a 27-mph tailwind, to find the speed of the jet you must perform the following calculation:

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