The half-life of the radioactive substance is 67.95 hours.
Answer:
the answers is -4
Step-by-step explanation:
-1+3 I think this the answer
Answer:
x>1
Step-by-step explanation:
move the constant to the right side and change its sign 7x>10-3
Then subtract the numbers 7x>7
Then divide the inequality by 7 from for both sides.
x>1
Answer:The answer is d which is 25
Step-by-step explanation: No Explain Sorry