Me asap very urgent
the interior angles formed by the sides of a quadrilateral have measures that sum to 360°.
what is the value of x?

enter your answer in the box.

x =

Solve the equation by completing the square. x^2+2x=17

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me