(PLEASE HELP) Simplify the following expression:

a + 2c − 5b − c + a − b

A. 2a − 6b + 2c
B. 2a − 6b + c
C. a − 6b + c
D. a − 5b + 2c

Ahomeowner plans to hang wallpaper on one wall of a bedroom that is 10 feet long if a stripe of wallpaper is 20 inches wide and stripes or hung vertically how many stripes on wall paper with the homeowner required

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.

What is the value of the discrimination for the quadratic equation 0=×2+2+×2