Perform the indicated arithmetic operations for complex numbers z = −4 + 5i and w = −1 − 2i.
a. z + w
b. z − w
c. z + 2w
d. z − z
e. explain how you ad and subtract complex numbers.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Ineed asap. 35 points. in order for two polygons to be similar, two conditions must be met. first, all pairs of corresponding sides must be in proportion. second, all corresponding angles must be congruent. prove that angle congruence is not enough, by itself, to establish that two polygons are similar. do this by describing or drawing two polygons that are not similar but whose corresponding angles are all congruent.

Robin and john each a a 12 inch pizza about how many square inches of pizza did they eat? estimate how much pizza they ate