Warm Up
Previous Knowledge
What do you remember about the mean? How would you calculate the mean of two numbers? Hint: sometimes you may have heard the "mean" be referred to as an "average".
Practice
What is the mean of 3 and 11? Hint: use the applet below to drag the point in the middle around until it's halfway between 3 and 11.
Previous Knowledge
What do you remember about the Pythagorean theorem? When can it be used & what is it used for?
In the applet above, the areas of the purple and the blue squares add up to the area of the red square. The side length AC is 4 and if we square that we get the purple area of 16. The side length AB is 3 and if we square that we get the blue area of 9. Lastly, the side length BC is 5 and if we square that we get the red area of 25.
The length of the legs (the shortest sides, those adjacent to the right angle) in a right triangle are A & B in the Pythagorean Theorem . C is the length of the hypotenuse (the longest side, opposite the right angle).
Practice
Find the hypotenuse in a right triangle with legs of 5 and 6 inches. Round your answer to 2 decimal places.