Duncan takes a break from studying and goes to the gym to swim laps. if swimming burns 9.05×105 cal per hour, how many kilojoules does swimming burn in that same amount of time?

For this case we have to by definition:

1 kilojoule equals 0.239006 kilocalorie.

1 kilocalorie equals 1000 calories

Then, if we have:

Now:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d