Solve for v: 3d=7v+5
2 answers:
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Answer:
- 42 miles
Step-by-step explanation:
You know that fractions with the same value in numerator and denominator reduce to 1. This is true whether the value is a number, a variable expression, or some mix of those. That is ...
This example should show you that you can treat units as if they were a variable.
So, the unit conversion process is the process of choosing combinations of numerator and denominator units so that all the units you don't want cancel, leaving only units you do want.
You're starting with a number than has "laps" in the numerator. To cancel that, you need to find a conversion factor with "lap" in the denominator. On the list you are given, the one that has that is ...
Now, you have canceled laps, but you have yards. Also on your list of conversion factors is a ratio with yards in the denominator:
This will cancel the yards in the numerator from the previous result, but will give you feet in the numerator. You want miles, so you look for a conversion factor between feet and miles, with miles in the numerator. The one you find is ...
These three conversion factors go into the blanks. When you form the product, you will get ...