Terms? As in math terms? 2?
In this question ,it is given that
The penny size of a nail indicates the length of the nail. The penny size
d is given by the literal equation
where n is the length (in inches) of the nail.
In the first part we have to solve for n .
And for that firt we add 2 to both sides
Now we divide both sides by 4, that is
Part b.
When d=3
When d =6, we will get
When d =10, we will get
Answer:
x = 2±sqrt(11)
Step-by-step explanation:
x^2 -4x - 7 =0
Add 7 to each side
x^2 -4x -7+7 =0+7
x^2 -4x =7
To complete the square take the coefficient of the x term and divide by 2 and then square it. Add it to both sides
-4 /2 = -2 then square
(-2)^2 = 4
Add 4 to both sides
x^2 -4x+4 =7+4
x^2 -4x+4 = 11
Factor the left side into (x-b/2)^2
(x-2)^2 =11
Take the square root of each side
sqrt((x-2)^2) =±sqrt(11)
x-2 = ±sqrt(11)
Add to to each side
x-2+2 = 2±sqrt(11)
x = 2±sqrt(11)
I'd say option D because you can just tell right off the bat that if x = 0, then f(x) = 43.75.
