Rafael is training for a triathlon, which includes

The three typical components of triathlon: swimming, cycling, and running. While variations of the sport exist, the most common form includes swimming, cycling, and running over various distances. Triathletes compete for fastest overall course completion, including timed transitions between the three races.

Step-by-step explanation:

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At least 8–12 weeks of consistent training before a triathlon. Each week, plan to train 4–6 hours of total exercise time over five days.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

addition

step-by-step explanation: