Darnelle drew this figure and the accompanying equations.

w + x + y = 180 y + z = 180which equation must also be true?
a
w + z = 180
b
y – x = w
c
w + x + z = 180
d
w + x = z

On a coordinate grid, point p is at (4, 3) and point r is at (−2, −5). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s? q(−4, 3), s(2, −5) q(4, −3), s(−2, 5) q(−4, −3), s(2, 5) q(−4, 3), s(−2, 5) ; -; i can't figure it out, if someone can me with the answer,that would be nice

The sum of two numbers is 12 and their difference is 18 what are the two numbers

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?