[2] (-4,1), and a correct explanation is given
A. Since the question is asking for the ratio of new books to used books, you need to know the number of used books and new books.
Used books: 14-5=9 //////////// New books: 5
Therefore the answer is 5:9 or 5/9.
B. 14:9 or 14/9
Hope this answer helped you.
Have a great day!!
Answer:
{-1/2, 1}
Step-by-step explanation:
You can divide the given polynomial by the factor (x +2) to find the remaining quadratic. That can be factored in the usual way to find the remaining zeros, or other means can be used. Such "other means" include graphing and the use of the quadratic formula.
The first attachment shows the synthetic division of f(x) by (x+2). The quotient is 2x^2 -x -1, which factors as ...
2x^2 -x -1 = (2x +1)(x -1)
The zeros are the values of x that make these factors zero: -1/2, +1.
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My favorite way to find the roots of any higher degree polynomial is to use a graphing calculator. The second attachment shows that method.
The answer is A.
Explanation:
Since this is a right triangle you can use The formula: leg squared plus leg squared = hypotenuse squared
So lets square the hypotenuse and first leg
And you get 85 hypotenuse and 49 leg
So just subtract 49 from 85 to get the other leg squares
You get 36 so now just square root it
Square root of 36 is 6
So the best answer is 6
Hope this helps some.