Hi pls help me with these question 1-15 it’s easy the ratios one

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

What is the solution of sqrt x+2-15=-3

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet