Which sentence is more grammatically correct? 1) if my teeth are straight, then i did wear my invisalign or 2) if my teeth are straight, then i wore my invisalign.

What is the missing constant term in the perfect square that starts with x^2 -20x

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks