Find the length of AB AB=

Rounded to the nearest tenth, what is the value of x

Of 400 people at the school carnival, 95% are students and the rest are teachers. a. how many students are at the school carnival? b. if 55% of the students at the school carnival are boys, how many are girls? c. how many teachers are at the school carnival? d. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?

Triangles cde and nop are similar. the perimeter of smaller triangle cde is 133. the length of two corresponding sides on the triangles are 53 and 212. what is the perimeter of nop?