Peter takes 7 minutes and 30 seconds to run 1 mile. How many miles can he run in 15 minutes?
1 answer:
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Answer: Third option.
Step-by-step explanation:
To solve this exercise it is important to remember the following:
1) By definition, equivalent expression have the same value, but they look different.
2) The multiplication of signs:
Then, given the following expression provided in the exercise:
You need to distribute the postive sign:
And finally, you must add the like terms:
As you can notice, the expression obtained matches with the expression shown in the third option.