Answer:
n = (1/2)(-1 ± i√2)
Step-by-step explanation:
Among the several ways in which quadratic equations can be solved is the quadratic formula. Putting to use the coefficients {12, 12, 9}, we obtain the discriminant, b^2 - 4ac: 12^2 - 4(12)(9) = 144 - 432 = -288. The negative sign of this discriminant tells us that the quadratic has two unequal, complex roots. These roots are:
-b ± √(discriminant)
n = ---------------------------------
2a
Here we have:
-12 ± √(-288) -12 ± i√2√144 -12 ± i12√2
n = ---------------------- = ------------------------ = --------------------
2(12) 24 24
or:
n = (1/2)(-1 ± i√2)
The answer is Option D. (4,2)
in this type of question , you just need to input the (x,y) , and see if the amount is correct
y - 0.75 = 1.25 (x-3)
2 - 0.75 = 1.25 ( 4 - 3)
1.25 = 1.25 (1)
1.25 = 1.25
hope this helps
9000. the value of 9 in 920 is 900. and ten times anything is basically just adding a 0. so ten times 900 is 9000.
Answer:
Step-by-step explanation:
4(x-3) =16
4x- 12=16
4x=28
8x=56