What is the absolute value of 4+7i is equal to the square root of

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

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?