Answer:
0.047619
P.S. do you need to round?
Answer:
12 inches
Step-by-step explanation:
Just do 6 x 2.
6 x 2 = 12
Answer:

Step-by-step explanation:

Distribute 2 through the parentheses

Add the like terms : 6x and 4x
Like terms are those which have the same base.

The negative integers are always but added but posses the negative ( - ) sign.

Hope I helped!
Best regards! :D
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Using Pythagoras Theorem,
(12)^2+ (a)^2= (13)^2
144+a^2= 169
a^2= 169-144
a^2= 25
a= √25
a= 5mm
Hope it helps you.
Just a translation:) hope this helps