Which properties are best used prove a quadrilateral is a parallelogram?
a) Diagonals are congruent and perpendicular.
b)Diagonals are congruent.
c) Diagonals bisect and are perpendicular.
d) Diagonals bisect.

Select all the correct statements. the amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y = 22x + 42. from the function, identify all the phrases that hold true for the situation. the electrician charges an initial fee of $22 the y-variable represents the number of hours the electrician charges an initial fee of $42 the electrician charges $22 for every hour worked the x-variable represents the electricians charges in dollars the electrician charges $42 for every hour worked

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

What is the absolute value of the complex number -4-sqrt2i