Suppose z1 = 7 - 3i and Z2 = 3 – 5i. Which letter represents the sum z1+ z2?

A
B
C
D

Someone . me. compound probability

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.