Practice test.

don't think i am stupid for asking this question. i will give brainliest to the first person who answers these question.

1. 1 + 1
2. 5 + 5
3. 12 x 12

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?