Formula for Perimeter is P=2l+2w. Then you plug in the information that you already know:
P=2(x+6)+2(12)
64=2x+12+24
64=2x+36
28=2x
x=14
you plug x back into your equation for l and get l=14+6=20
The length is 20 ft.
Answer:
Step-by-step explanation:
(k-p)(k-n)
=k^2 -(p+n)k+pn
this is the expanded form..
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Step-by-step explanation:
use the formula and simply solve
If 3 squared is 9 then 9 times -2 is -18 plus 7 is -11
Answer:
24,150km
Step-by-step explanation:
The plane travels 3450km in 1 hr, since we need the distance traveled in 7 hrs we need to multiply 3450 by 7.
distance in 7hrs: 3450*7 = 24,150km