<span>If the US gains 1 person every 11 seconds, we can find how many people the US gains each year. We can divide the total number of seconds each year by 11 seconds.
(365 x 24 x 3600 s) / (11 s) = 2866909 people
The US gains 2866909 people each year.
The US gains 2.866909 million people each year.
f(t) = 300 + 2.866909 t
f(0) = 300
f'(t) = 2.866909
f'(0) = 2.866909</span>
3x+y=27, when x=7
1. Replace any x in the equation with 7.
3(7) + y=27
2. Simplify.
21+y=27
3. Solve for y.
y=27-21
y=6
4. Check your answer by inserting x=7 and y=6 into the original equation.
3(7) +6=27
21+6=27
27=27
Yes, it checks.
The given identity tells you ...
.. (sum of numbers) * (sum of squares - product) = (sum of cubes)
Substituting the given information, you have
.. (sum of numbers) * (29 -10) = 133
Then you can divide by (29 -10) to get
.. sum of numbers = 133/19 = 7
The sum of the two numbers is 7.
This is a well known joke:
Why six afraid of seven? Because seven ate nine!
It is supposed to be a "word game" where instead of writing eight, the authour wrote ate, which sound the same but means something different.
Hope it helped,
Happy homework/ study/ exam!
