The average age of Kofi, Ama and their child 4 years ago was 20 years and that of Ama and the Kofi 5 years ago was 30 years. The present age of the child is?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

A( developed during the process of technology design

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?