Verify that rectangle ABCD with vertices A(3,9), B(10,8), C(9, 1), and D(2, 2) is a square by showing that it is a parallelogram with perpendicular diagonals.

false

step-by-step explanation:

step-by-step explanation:

what is the figure? attach a picture.

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock