Which relationship is always true for the angles x, y, and z of triangle ABC? a
x + z = y

b
y + z = x

c
x + y + z = 180 degrees

d
x + y + z = 90 degrees

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?