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Rihanna swims everyday. she Burns approximately 10.6 calories per minute when swimming and about 15 calories warming up before she swims. right and equation to find out how many minutes Rihanna must swim to burn 205.8 calories.

Answer :

Given:

Calories she burns per minute = 10.6 calories per minute

Calories she burns before she swims = 15 calories

If she needs to burn 205.8 calories, the equation to find out how many minutes she must swim is:

205.8 = 10.6M + 15

Where M represents the number of minutes.

Let's solve for M.

205.8 = 10.6M + 15

Subtract 15 from both sides:

205.8 - 15 = 10.6M + 15 - 15

190.8 = 10.6M

Divide both sides by 10.6

[tex]\begin{gathered} \frac{190.8}{10.6}=\frac{10.6M}{10.6} \\ \\ 18\text{ = M} \end{gathered}[/tex]

Therefore, Rihanna must swim for 18 minutes to burn 205.8 calories.

ANSWER:

205.8 = 10.6M + 15

Rihanna must swim for 18 minutes