Answer:
C
Step-by-step explanation:
Given the complex number a ± bi, then the complex conjugate is
a ∓ bi
Note the real part remains unchanged while the sign of the imaginary part is reversed, thus
The conjugate of 7 - i is 7 + i → C
Negative linear associations
Let L=length and W=width and T=total lace
so
2L + 2W = T
and we know
T= 60 and W=20
so
2L + 2(20) = 60
2L + 40=60
2L = 20
so L= ?