I need help please help me please! A certain radioactive element decays at a rate of 50% each hour. If the initial amount of the element is 9.5 grams, write an equation that represents the amount of the element after x hours. What is the number of grams of this element at 5 hours?

What’s the equation you are trying to solve to get x?

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

Iam not sure , but probably 750 or 7.5