Ashark jumps out of the water. the quadratic function f(x) = -16x^2 + 18x models the sharks height in feet above the water after x seconds. how long is the shark out of water

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

What else equals 42 and 30 for multiply