3 years ago

Ellie is now 4 time as old as her son. In 5 years time she is going to be 3 times as old as her son. How old is eliies son now?

Mathematics

1 answer:

DerKrebs [107]3 years ago

8 0

Answer:

10, he is 10

Step-by-step explanation:

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3 years ago

Using a formula estimate the body surface area of a person whose height is 150 cm and who weighs 80 kg.

ladessa [460]

Answer:

B. $1.83\text{ m}^2$

Step-by-step explanation:

We are asked to find the body surface area of a person whose height is 150 cm and who weighs 80 kg.

$\text{Body surface area}( m^2)=\sqrt{\frac{\text{Height (cm)}\times \text{Weight (kg)}}{3600}}$

Substitute the values:

$\text{Body surface area}( m^2)=\sqrt{\frac{150\text{ cm}\times 80\text{(kg)}}{3600}}$

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