A NASA mathematician used a system of equations to determine the point in space where a satellite crossed paths with a massive p
iece of space debris. How many equations did he need? And how many variables were needed to find the exact location in space? A) 3 equations with 2 variables
The coordinates of a point in space must necessarily have 3 components. One to describe the distance on the x axis, another to describe the distance on the y axis to the point, and a third to describe the distance on the z axis.
If we have three variables, then 3 equations are needed to solve the system. With less than 3 equations it would be impossible to solver the system.
In -2x, the exponent will be dealt with first. With (-2x), the multiplication is going to be done first. This is determined because of Order of operations.