If z = a - bi, which of the following must be true of the imaginary part of the complex conjugate of z?
a. it must be the opposite of -bi.
b. it must be the opposite of bi.
c. it must be the opposite of -b.
d. it must be the opposite of b

Which multiplicative property is being illustrated below? (type commutative, associative, or identity) 5 × 2 × 4 = 2 × 5 × 4

What is the y intercept of f(x)=(1/2)^x?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.