Calculate the perimeter and area of parallelogram QRST whose vertices are located at Q(-2,3), R(6.3), S(3,-1) and T(-5,-1).

Let w=23 . what is the value of w + 45 ?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.