A human head weighs 160 ounces. What is that weight in kilograms? Analyze the work below.

1 pound = 16 ounces. 1,000 grams = 1 kilogram. 1 kilogram = 2.2 pounds.

Student’s work:

StartFraction 160 ounces Over 1 EndFraction times StartFraction 16 pounds Over 1 ounce EndFraction times StartFraction 1 kilogram Over 2.2 pounds EndFraction almost-equals 1,163.6

What is the student’s error?

Respuesta :

The human head weighs 160 ounces which is equivalent to 100/22 kilograms

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

1 pound = 16 ounces

Hence:

160 ounces = 160 ounces * 1 pound per 16 ounces = 10 pounds.

1 kilogram = 2.2 pounds

Hence:

10 pounds = 10 pounds * 1 kilogram per 2.2 pounds = 100/22 kilograms

The human head weighs 160 ounces which is equivalent to 100/22 kilograms

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