Answer:
28.6
Step-by-step explanation:
12^2+x^2=31^2 solve for x to get 28.6(rounded)
<span>The reciprocal is shown as 1/x, or x-1. When we multiply a number by its reciprocalwe get 1. Example: 3 times 1/3 equals 1. Also called the "Multiplicative Inverse" See: Multiplicative Inverse.</span>