Figure a is congruent to figure b

what is the sum of angle c and angle d

Can someone check if i did this correct. it’s number 4 if you’re wondering.

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

What is the solution to the equation below? 3/x-2+6=square root x-2 +8