X^2 - xy + xy - Y^2
=
X^2 - Y^2
-28-(-24)=-4
14-18=-4
28-32=-4
Any of these should work and there are plenty more that would work as well
The simplified ratio of 15:5 is 3:1, divided both sides by 5
With this problem you just look at the graph and answer it that way. Look at where the heart rate is at its max and then look at the beginning and end, the shape of the graph. Then answer the question.
Answer:
Hey There!
Let's solve....
Radius=5cm
Angle = pi/3
Therefore arc length= Radius×angle

The arc length is 5.23 cm when Theta=pi/ 3 and radius is 5 cm.
<h2>I hope it is helpful to you...</h2><h3>Cheers!_________</h3>