In parallelogram ABCD, AB^4+AD^2+AB^2*AD^2=AC^2*BD^2.If angle ABC=x, find the product of all possible values of x

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Is the point (0, 8) on the x-axis or y-axis? how do you know?