Answer:
B
Step-by-step explanation:
Answer: 15%
Step-by-step explanation:
x is the simple interest rate
2,600 * X = 390
390 / 2,600=
15%
To find the percentage, all we have to do is 35.1/54. When we do that, we get 0.65. Multiply by 100 to get 65. 35.1 is 65% of 54.
Answer:
2.5mg
Step-by-step explanation:
Since the half-life for the radioactive material is 3 hours, Therefore it will undergone two times of half-life process.
The first 3 hours 10mg will be decreased into 5mg. The final 3 hrs, it will decreased from 5mg to 2.5mg
Answer: 166 students
Explanation: First your equation will be S times 15 equals 2,500 which will read as: S * 15 = 2,500 , then you will divide 2,500 by 15 which will give you 166.666667, since there cannot be .66 repeating students you will round down and the answer will be 166 students.
