Nathan is making a beaded bracelet for every five red beads there are three white beads what is the ratio of red to white beads

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

Is the figure congruent? yes or no?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)