Concept explainers
Elena went on a Simile walk. She completed the first half of the walk 1 mi/h faster than usual and the second half of the walk 2 mi/h slower than the first half.
- If it took her 7.2 h to complete the walk what is her usual rate?
- What is the formula necessary to solve this problem?
a.
To find the usual rate, if the total time taken to complete the walk is
Answer to Problem 6STP
The usual rate is
Explanation of Solution
Given information:
The given statement is:
“Elena went on a
Formula used:
The following formula is used:
Calculation :
Let the usual rate be
The speed of the first half of the walk is
The speed of the second half of the walk is
The usual rate can be calculated by;
Hence, the usual rate is
b.
To write the formula necessary to solve the problem.
Answer to Problem 6STP
The quadratic formula
Explanation of Solution
Given information:
The given statement is:
“Elena went on a
The quadratic formula
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