For a standard normal distribution, which of the following expressions must always be equal to 1?
pzs-a) - p(-aszsa) - p(z2a)
pizs-a) - p(-aszsa)+ p(z? a)
o p(zs-a)+ p(-aszsa)- p(zea)
p(zs-a)+p(-aszka)+p(728)

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

Drag each sequence of transformations to the correct location on the table. classify the sequences of transformations based on whether or not they prove the congruency of the shapes by mapping shape i onto shape ii. plz i'll rate u 5 stars need this done for a mastery test

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x