Respuesta :
Answer:
It weighs 40 pounds on mars
Step-by-step explanation:
Direct proportion is the relationship between two variables when their ratio is equal to a constant value
- It can be expressed as y = k x, where y varies directly as x and k is constant of variation
- It can be expressed as [tex]\frac{y_{1}}{x_{1}}=\frac{y_{2}}{x_{2}}=k[/tex]
∵ The weight of an object on mars varies directly as the weight
of the object on earth
∴ w(m) = k × w(e)
∵ The weight of the object on earth is 75 pound
∴ w(e) = 75
∵ The weight of this object on mars is 25 pounds
∴ w(m) = 25
- Substitute them in the equation of variation
∵ 25 = k × 75
- Divide both sides by 75
∴ [tex]\frac{1}{3}[/tex] = k
∴ w(m) = [tex]\frac{1}{3}[/tex] × w(e)
∵ An object weighs 120 pounds on earth
∴ w(e) = 120
- Substitute it in the equation of variation
∴ w(m) = [tex]\frac{1}{3}[/tex] × 120
∴ w(m) = 40
∴ It weighs 40 pounds on mars
Answer:
40
Step-by-step explanation:
the answer is 40 aka 40 pounds and you get that by dividing