Answer:
x=1/2 y =1
Step-by-step explanation:
(-4x+2y)/2x5=0/2x5
10x+3y=8
(-2x+y)x5=0
10x+3y=8
-10x+5y=0
10x+3y=8
8y=8
y=1
x=1/2
Answer:
she earned 36$ and the store earned 409.5
Step-by-step explana
8% of 450
91% of 450
Im thinking it whould be c
Sec²(-π/4)
sec x= 1/ cos x
cos(-π/4)=cos(π/4) as even function
cos(π/4) = (√2)/2
sec(-π/4) =1/(cos(-π/4))=1/cos(π/4)= 2/(√2)
sec²(-π/4)=( 2/(√2))²= 4/2=2
sec²(-π/4) = 2
