Qhich are the solutions of the quadratic equation x^2=9x+6
1 answer:
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Given:
Nancy is running 3 meters per second.
Juan starts the same race 3 meters ahead of Nancy but he is going at 2 meters per second.
To find:
The equations for Nancy and Juan.
Solution:
Let x be the number of seconds.
Nancy is running 3 meters per second. So, the total distance covered by Nancy in the race is
Juan starts the same race 3 meters ahead of Nancy but he is going at 2 meters per second. So, the total distance covered by Juan in the race is
Therefore, the equations of Nancy and Juan are and
respectively.
Answer:
The rule of 72 is used to determine how long it will take an investment to Double
For an Investment of $5,000 earning 7% annually, this will take about ten years
Step-by-step explanation:
The rule of 72 says that to find the number of years required to double your money at a given interest rate, you just divide 72 by the interest rate
Example:
If you want to know how long it will take to double your money at 9% interest, divide 72 by 9 you will get 8 years
The formula of the rule of 72 is Y =
Let us complete the missing
The rule of 72 is used to determine how long it will take an investment to Double
The missing word is "Double"
∵ The investment is $5,000
∵ The annual interest is 7%
- By using the rule of 72
∵ Y =
∵ r = 7
∴ Y =
∴ Y = 10.29
- Round it to the nearest year
∴ Y ≅ 10 years
For an Investment of $5,000 earning 7% annually, this will take about ten years
The missing word is "ten"