In 1991, an American, Ann Trason, set a world record by running 1000 km in 7 hours, 50 minutes, and 9 seconds. Which is the best
1 answer:
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Answer:
Step-by-step explanation:
Given the following function:
You need to follow these steps in order to solve the exercise:
1. Substitute :
2. Now you need to apply the Quadratic formula. This is:
In this case, you can identify that:
Then, you can substitute these values into the formula:
3. Evaluating, you get:
4. You must choose the positive value. Then: