P. The median of a set of eight numbers is 4.5. Given that seven of the numbers are 7,2, 13,4,8, 2 and 1,
find the eighth number and write down the mode of the eight numbers.
plz answer this question its confusing me alot!

For each proportion find the unknown number x 1/5/8=×/15

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)