answer: discriminant is 36. there are two real solutions (both different)
the equation 1x^2 - 4x - 5 = 0 is in the form ax^2 + bx + c = 0. we see that
a = 1, b = -4, c = -5
so the discriminant is
d = b^2 - 4ac
d = (-4)^2 - 4()
d = 16 + 20
d = 36 is the discriminant
the discriminant is positive, so there are two different solutions. the solutions are both real.
note: because the discriminant is a perfect square, this means that the two solutions are rational (ie fractions of whole numbers).
there is no table, attach a table for more assistance.
find annual profit: $75,000/6 = $12,500
roi = annual profit/ initial investment
roi = $12,500/$15,000 or 83.3%
well, they're both the same fraction, they both equal the same amount.
the only difference is that one is improper and the other is proper.
i'm not too good with explaining, but that's a simple answer, i guess-?
hope you out tho! °ω°