Answer:
4
Step-by-step explanation:
because 15 x 4 = 60
20 x 3 = 60
Question 1: The average of 10 numbers is -5. A new number is added to the list making the average -6. What is the new number?
To solve this question, first note that the sum of these numbers is -5*10 = -50. If the average of 11 numbers is -6, we must have that they add up to -6*11=-66. Therefore, the new number is -66-(-50) = -66+50 = -16.
Question 2: It is hard to explain why, but just know that the answer is No Solution. I think you must have made a typo, like maybe the product is -24?
Each year, the current balance is multiplied by 1.07.
After 8 years, we'll have multiplied it by 1.07 eight times.
This can be written as
, which has a value of $34363.72, to the nearest cent.
A is not part of the problem, and it's what makes the condition false. B is the opposite of the statement being proved. C is the condition, not the hypothesis. However, D is the statement we are trying to prove, or the hypothesis.
