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Nimfa-mama [501]
2 years ago
7

1. Drew ran the first 2 3/4 miles of a 5-mile race in 1/2 hour. What was his average rate, in miles per hour, for this first par

t of the race? Describe how you solved the problem.
Mathematics
1 answer:
sveticcg [70]2 years ago
3 0

Answer:

5 1/2

Step-by-step explanation:

Rate x Time = Distance.  If you know 2 of the parts, you can figure out the 3rd part.  You know the time and the distance, so plug those in and solve.

Let R = rate

R(1/2) = 2 3/4  Let's change  2 3/4 into a improper fraction.  

R(1/2) = 11/4 Multiply 4x2 and then add 3 that gets you 11 and the bottom number stays the same.  Next, multiply both sides of the equation by 2.

R = 22/4 or 11/2 or 5 1/2 miles per hour.

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A table (relation) may or may not represent a function

The table that represents a function is Hal's table

<h3><u>Tables and relations</u></h3>

For a table to represent a function, then the input values must point to exactly one output value.

This means that:

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From the given tables (see attachment), we can conclude that

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121 /132

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