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
Answer:
By comparing, I'm assuming you mean greater than, or equal to, or less than.
To understand that let's get two irrational numbers.
Let's use pi, (3.14159265358979...) and square root of 2.
It's just like doing normal compares. I recommend trying to put the number in decimal form (if its not already in it for it is much easier.)
Square root two = 1.414....
Pi = 3.14159..
Since the unit of pi is greater than square root two, we know pi is greater.
Hoped this helped ya, if this is not the answer you expected, please clarify on what you mean by "compare" in the comments. :)
Lunch
Step-by-step explanation:
she eats 900 cals at lunch, but at dinner she has 800 and breakfast she has 600. 900 is the most cals so lunch is the meal with the most calories.
0.0937
9 is the significant figure
but there is a 7 after it which means we round to 10
this makes it
=0.1
Answer:
x = 7
Step-by-step explanation:
Since the x- coordinates of the 2 points are equal, both 7 , then the line is vertical with equation
x = c
where c is the value of the x- coordinates the line passes through, then
x = 7 ← equation of line