Solve and show all work, simplify completely: 7/10 x 2/3

Solve: 3x+y=6 4x-2y=18 show all work !

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f