Answer:
C, He will need 20.1 inches of bracing
Step-by-step explanation:
This is can be found using Pythagorean Theorem and multiplying the quantity by 3
Answer:
The first one
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)
Answer:

<h3><u>For the 1st part</u></h3>




<h3><u>For the 2nd part</u></h3>
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Plug 4 in for every x
(3*4)-4=8
(4^2)-1=15 [(4^2) is 4*4]
(2*(4^2))-15= 15 [because of PEMDAS the exponent comes first and then multiply by 2 then subtract]
Perimeter is the sum of the lengths so add up all the sides from above
8+15+15=38
The gcf of these two numbers is 1, because 189 and 200 don't have any common factors.