The gross federal debt y (in trillions of dollars) for a certain country in year x is approximated by the following equation,
1 answer:
Answer: 2008
Step-by-step explanation:
Given : The gross federal debt y (in trillions of dollars) for a certain country in year x is approximated by the equation , where x is the number of years after 2000.
To find the year in which the federal debt will be $10.68 trillion, we substitute y= 10.68 in the above equation , we get
The required year will be = 2000+8=2008.
Hence, in 2008 the federal debt will be $10.68 trillion.
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Answer:
The first listed equation is the correct equation to solve
The correct answer is: t = 5 seconds
Step-by-step explanation:
Let me mention first that there is an error in the statement that the gravitational pull of the Earth is 16 ft/s^2. It is in fact 32 ft/s^2, and the actual equation uses half of the acceleration multiplied by the square of the variable time, so it gives as final expression :
and we want to find the value/s for "t" that make this equation equal zero (when it reaches the ground and the object just touches the ground. This makes the equation we want to solve:
which solving for "t" becomes:
So we adopt the positive answer (positive time) since the negative value has no physical meaning for this problem.
That is: t = 5 seconds