4. Xavier has a rectangular piece of card. He cuts off the four corners. What do the angles of the remaining shape add up to?

Need on this one asap im almost done with this subject

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.