Which of the following are properties of squares? (Check all that apply.) 1. Angles have a sum of 360 degrees
2. Diagonals are perpendicular to each other
3. All angles are 90 degrees
4. Opposite sides are parallel
5. All sides are congruent
6. Adjacent angles are supplementary
7. Diagonals bisect each other
8. Diagonals are congruent

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

If 3x+8=3x+8 is it one solution or no solution

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)