Q11. Given the right iriangle ABC, the angle C = 90 degrees, the angle A = 30 degrees, D is the mid-point of AB and the line DE is perpendicular to the line AB; AE = 4cm. Find BC.

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Will give brainliest what is the value of x? enter your answer in the box.

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective