List all possible combinations of 4, 5, 6, 7, taken four at a time; How many combinations are there?

49xy +34y - 72z. determine the degree of the polynomial

What is the prime factorization of 195

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit