Final answer:
To find the value of c in the equation ax + d = 0, we need to solve for vh. Identify the knowns v and u', and the unknown u. Use the equation u = to solve for u.
Step-by-step explanation:
To find the value of c, we need to solve the equation ax + d = 0 for vh. First, we need to identify the knowns and the unknowns. In this case, v is equal to 0.500c and u' is equal to -0.750c. Therefore, the unknown is u. We can use the equation u = to solve for u.