Please help ASAP I will mark brainleist. ps look on my page and go to my questions I asked second half will be posted.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.