Answer:
Radioactive in half life is 51gram
Step-by-step explanation:
80grams:12years
X :7.6years
12x÷x=x
7.6×80÷12=51gram
Answer:
55+8.5x=123
Step-by-step explanation:
The 55 represents the flat fee, the 8.5 represents the daily charge, x represents the number of days she rented it for, and 123 is the total amount
Answer:
25.7 is how much his luggage weighs.
Step-by-step explanation:
30÷4=7.5
45÷7.5=6
you will need about 6 gallons of water to fill it.
Answer: 6:18
All of the other options are equal to 1:3