Answer:
the roots are n = 1 + √15 and n = 1 - √15
Step-by-step explanation:
In this case I would immediately rewrite n² - 2n - 5 = 10 as
n² - 2n = 10 + 5 = 15.
To complete the square: Identify the coefficient of n (it is -2). Halve that, obtaining -1, square this result, and then add the outcome (1) to and subtract the outcome (1) to n² - 2n:
n² - 2n <em>+ 1 - 1 </em> = 15
Next, rewrite n² - 2n + 1 as the square of a binomial:
(n - 1)² = 15
Finally, take the square root of both sides:
n - 1 = ±√15
so that the roots are n = 1 + √15 and n = 1 - √15
You add up all the sides then with the fractions you add those up and simplify so it will be 229 4/9<span />
Hello :
the solution is : <span>(3, -1)
put x= 3 and y = -1
you have : 3-(-1) = 4 and 3+(-1) = 2 ..... right</span>
So, there is an exponential growth formula you use.
First, write the initial cost which is
60,000
Then write 1+ the percentage of growth rate which is 0.04 percent. Then, right the time as an exponent after certain amount of years.
60,000(1+0.04)^10
60,000(1.04)^10
Plug this in a calculator
it should be 88814.6571
I hope this helps.