8 months; $740
75x+140=90x+20
Find x then plug it in to find the cost
Multiplication property; distribution property of an exponent. Multiply exponents together, then distribute the ¨( )¨
Step-by-step explanation:
CCTV cameras in a bit more of the day I will have a great time and where is the only thing that has to do with it
Sin2(x) +cos(x)=1
from the relation: (sin2(x) +cos2(x) =1 )
so , sin2(x)=1-cos2(x)
by subs. in the main eqn.
1-cos2(x) + cos(x) =1
by simplify the eqn.
cos(x) -cos2(x)=0
take cos(x) as a common factor
cos(x)* (1-cos(x))=0
then cos(x)=0 && cos(x)=1
cos(x)=0 if x= pi/2
& cos(x) = 1 if x = 0 , 2*pi
so the solution is x= {0,pi/2 , 2*pi}
Answer:
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Step-by-step explanation:
