Convection currents moving towards tectonic plates away from each other creates which of the following physical geographic features

As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks. ... This rock (basalt) becomes a new part of Earth's crust.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.