Final answer:
To find the unknown quantity x in relation to 15 and 30, we need to identify the known values, determine the unknown we are solving for, select an equation that incorporates x, plug in the known values, and solve for x by rearranging the equation.
Step-by-step explanation:
To solve for x, representing the unknown part of the question regarding 15 and 30, we follow a systematic approach. Firstly, we would identify the knowns; for example, if dealing with speeds or distances in a physics problem, we'd recognize the given values such as initial positions or velocities. Then we identify the unknown, which, in this case, is the variable x.
After establishing the knowns and unknowns, we choose an appropriate equation that includes x and allows us to solve for it using the known values. Once the equation is chosen, we substitute the known values into the equation and rearrange it appropriately to make x the subject of the formula, thus solving for the unknown quantity.
An example could be using the equation x = xo + ut to solve for displacement in a physics context, where xo is the initial position, u is the initial velocity, and t is the time. By rearranging the equation, we can isolate and solve for the unknown x using the given known values.