Hi what’s your name and what’s your hobbies

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

The focus of a parabola is (-4,-5) and its directrix is y=-1 find the equation