There are many variables that affect the calculation of a patient’s total blood volume. For the purposes of this question, weight and age will be the only variables considered. The Australian Red Cross states that “Blood volume can be estimated as approximately 70mL/kg for adults, 80mL/kg in children…”. Work on the assumption that an adult is a person aged 16 years or over and a child is a person aged 2 to 16 years.

Let:
W = Weight (kg)
P = Plasma volume (mL) and
T = Total blood volume (mL)

Write 2 equations for calculating Total blood volume (T) given Weight (W), expressing T in terms of W, one for adults and one for children:

The two equations are;

For adults, T = W kg × 70 mL/kg Equation (1)

For children, T = W kg × 80 mL/kgEquation (2)

Step-by-step explanation:

We are told that

Blood volume = 70 mL/kg for adults

Blood volume = 80 mL/kg in children

Therefore, the total blood volume,T  of an adult of weight, W is given by the following relation;

T = W kg × 70 mL/kg Equation (1)

The total blood volume,T of a child of weight, W is given by the following relation;

T = W kg × 80 mL/kgEquation (2).

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

true

step-by-step explanation:

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