Answer:
Step-by-step explanation:
What's 2|–9| – |–2|? Question 14 options: A) –18 B) –20 C) 16 D) 20
1 answer:
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Answer:
The least number of questions a student can answer correctly is 32
Step-by-step explanation:
Let
x -----> the number of questions answered correctly
y ----> the total number of questions on a test
we know that
For a student to earn and A or B on a test, the ratio must be greater than or equal to 0.8
so
For y=40 questions
Find the value of x
substitute
solve for x
Multiply both sides by 40
so
The least number of questions a student can answer correctly is 32
<u><em>Verify the ratio</em></u>
For x=32, y=40
Compare
----> is ok