Heather finished a race in 58.4 seconds, which was 2.6 seconds less than her practice time. Write and solve an equation to find Heather's practice time. Show that your answer is reasonable.

Equation:
Let \( x \) be Heather's practice time.
\[ x - 2.6 = 58.4 \]

Solution:
\[ x = 58.4 + 2.6 \]
\[ x = 61.0 \]

Heather's practice time was 61.0 seconds.
This answer is reasonable because when you subtract 2.6 seconds from 61.0 seconds, you get 58.4 seconds, which matches Heather's race time.

P=58.4+2.6=58+0.40+0.60+2=60+1=61
P=61 seconds.

Answered by Anonymous | 2024-06-10

Practice time P seconds Timing in the Race : R = 58.4 seconds Improvement Record I = 2.6 seconds Race timing = Practice timing - Improvement record R = P - I 58.4 seconds = P - 2.6 seconds
Take 2.6 seconds to the left hand side, 58.4 sec + 2.6 sec = P P = 61.0 seconds
Now, subtract improvement record time from Practice time, you get the race time.

Answered by Everest2017 | 2024-06-10

Heather's practice time was 61.0 seconds, which is reasonable because when subtracting 2.6 seconds from this time, we get her race time of 58.4 seconds. This confirms the calculation is correct. Therefore, the equation is valid and the solution aligns perfectly with the information given.
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Answered by Anonymous | 2024-12-26