Question

anna is biking at x miles per hour. sara bikes at 10 mi/h. which expression represents the average of anna’s and sara’s speeds?

Answer 1

Step-by-step explanation:

It is given that,

Speed of Anna is x miles/hour

Speed of Sara is 10 mi/h

We need to find an expression that represents the average of Anna's and Sara's speeds. Average of two objects is given by :

$v=\dfrac{v_1+v_2}{2}$

ATQ,

$v=\dfrac{x+10}{2}$

The above expression represents the average speed of Anna and Sara.