Sarah answers 19 questions correctly on a test. There are 24 questions on the test. What was Sarah's score on the test
1 answer:
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Answer:
The lines DE and BC have the same slope, therefore the two lines, DE and BC, are parallel
Step-by-step explanation:
To prove that DE is parallel to BC, we have;
The slope, m of the lines DE and BC are found from the following equation;
Where;
(x₁, y₁) and (x₂, y₂) = (b, c) and (a + b + c) for DE, we have;
Where we have (x₁, y₁) and (x₂, y₂) = (0, 0) and (2a, 0) for BC, we have;
Therefore, because the lines DE and BC have the same slope, the two lines DE and BC are parallel.
Answer:
B. The other solution to function is
.
Step-by-step explanation:
From Algebra, we remember that quadratic functions of the form has solutions of the form:
, where both are complex if and only if
.
Hence, if one solution of the quadratic function is , then the other solution is
. The correct answer is B.