What is the square root of 422

20.5426 (rounded to nearest 0.0001)

Step-by-step explanation:

Square roots can't be really be explained, but there is one think you should know. 422 is 22 more than 400, which is greater than what would be the halfway point (20.5 ^ 2 = 420.25), so √422 is greater than 20.5, but not greater than 20.55 (20.55 ^ 2 = 422.3025). However, it is close to 20.55 though. Thus, you can conclude √422 is about 20.5426.

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.