The ratio of 7th grade students to 8th grade students in a soccer league is 17:23. If there are 200 students in all, write and solve a proportion to find how many are 7th graders.

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

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex