Answer:
Pythagoras theorem
hypotenuse²=base²+height²
(24)²=base²+(9)²
576=base²+81
576-81=base²
494=base²
45
Step-by-step explanation:
5
mean = sum of all values÷number of observation
= 3+7+5+6+4 ÷ 5
= 5
