Answer:
use Pythagoras theorem
Step-by-step explanation:
a = 5
a^2 + b^2 = c^2
Substitute
b = 12
c = 13
a^2 + 12^2 = 13^2
a^2 + 144 = 169
a^2 = 25
a =
Mark brainliest please!
Answer: 0.5
L×L= area
L^2=0.25
Square root both sides
L=√0.25
L=0.5
sample mean
Answer: X is equal to either 0 or -42