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Lady bird [3.3K]
3 years ago
7

A test has 20 questions worth 100 points. The test consists of true/false questionsworth 3 points each and multiple choice quest

ions worth 11 points each. How many multiple choice questions are on the test?
Mathematics
1 answer:
Artist 52 [7]3 years ago
7 0
X for number of true/false questions and y for number of multiple choice questions:

3x+11y=100
x+y=20
Solve the system and the answer is 5 multiple choice questions.
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Use the figure and follow the directions below
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Answer:

The answer is B

Step-by-step explanation:

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We'll use variables to represent the speeds of the eastbound and westbound trains.

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Subtraction is used, because it represents the difference in distances between the two trains if they travel the same direction.

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