X+y=8 and x-y=2 solve the simultabeous equation

pls answers urgently

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w