What is the value of the discriminant of the quadratic equation −2x2 = −8x + 8, and what does its value mean about the number of
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Answer:
D. 914 feet
Step-by-step explanation:
We are given the distance that a person can see on a clear day from the upper observation platform of the Eiffel tower in Paris. We are then required to estimate the height of the upper observation platform using the formula;
Where d is the distance and h the height of the upper observation platform. The first step would be to solve for h, that is make h the subject of the formula in the above equation;
We multiply both sides of the equation by the reciprocal of 5/6 which is 6/5;
The next step is to eliminate the square root on the Left Hand Side of the equation by squaring both sides;
Given d is 25.2, h becomes;
To the nearest whole number, h becomes 914