Three parallelograms are hinged at each vertex to create an arm that can extend and collapse for an exploratory spaceship robot. What is mZ1? Explain how you found the answer.
or
angles of a
All of the angles along the center of the parallelograms in the arm are
parallelogram. By the
Z1 is
(Do not include the degree symbol in your answer.)
because they are either
W to these angles, so mZ1 =

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z