(Will give brainliest) hey! I don’t know what to do here, could you tell me? Please add an explanation with your answers, I want
to get this so I am able to do it myself in the future❤️ thank u for ur help! Btw, ignore the numbers below the bell work. (Please respondo before 11:00pm)
All of these equations are quadratic equations (degree 2). Every quadratic has two roots. They may be identical (looks like 1 root), and they may be complex (zero real roots), but there are always 2 of them.
a) the y-value of the vertex is negative and the parabola opens downward (leading coefficient -5), so there are no real zeros and both roots are complex.
b) each binomial factor contributes a root. Both roots are real.
c) the discriminant is positive, (3²-4·2·1=1), so both roots are real.
There is 20x more nonfiction than fiction so you do 20+1=21 so then to find out what of 1155 is we do 1155÷21=55 so then we times 55 by 20 because there are 20x more nonfiction than fiction 55x20=1100 soo now we know there is 1100 nonfiction books and 55 fiction books to check whether we are right we can do 1100=55=1155 we are right because there is 1155 books in the library hope i helped