Question

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 1

To find out how many minutes Rihanna must swim to burn 205.8 calories, we can set up an equation and solve for x. In this case, x represents the number of minutes she swims. By substituting the given information into the equation, we can determine the answer.

Step-by-step explanation:

To find out how many minutes Rihanna must swim to burn 205.8 calories, we can set up an equation using the information given. Let x represent the number of minutes she swims:

Calories burned from swimming: 10.6 calories/minute * x minutes

Calories burned from warming up: 15 calories

Total calories burned: 10.6x + 15 = 205.8

To solve for x, we can subtract 15 from both sides and then divide both sides by 10.6:

10.6x = 205.8 - 15

10.6x = 190.8

x = 190.8 / 10.6

x ≈ 18.04 minutes

Therefore, Rihanna must swim for approximately 18.04 minutes to burn 205.8 calories.

Answer 2

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

`\begin{gathered} (190.8)/(10.6)=(10.6M)/(10.6) \\ \\ 18\text{ = M} \end{gathered}`

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

ANSWER:

205.8 = 10.6M + 15

Rihanna must swim for 18 minutes