Answer:
9
Step-by-step explanation:
If she buys 10 CDs, it would come out to one hundred. if she bought 9 she would still have enough to pay for shipping
Answer:
It's 14
Step-by-step explanation:
y=4x-6.....(1)
5x+3y=1....(2)
substitute y=4x-6 into equation 2
5x+3(4x-6)=1
5x+12x-18=1
17x=19
x=1.12
substitute x=1.12 into equation 1
y=4(1.12)-6
y=4.48-6
y=-1.52
x=1.12,y=1.52
Answer:
(-1,-4)
Step-by-step explanation:
The equation of a parabola os written as: ax^2+bx+c
This parabola's equation is x^2+2x-3
● a= 1
● b= 2
● c = -3
The coordinates of the parabola are: ( (-b/2a) ; f(-b/2a) )
● -b/2a = -2/2 = -1
● f(-b/2a) = (-1)^2+2×(-1)-3=1-2-3= -4
So the vertex coordinates are (-1,-4)
Answer:
<em>It must have 4 roots</em>
Step-by-step explanation:
<u>Fundamental Theorem of Algebra</u>
One polynomial of degree n will have exactly n roots. The degree of a polynomial is the highest exponent of its variable. Some of the roots could be real, some could be imaginary (complex). If n is odd, at least one of the roots is real.
The polynomial given in the question is
has a degree of 4 (the highest exponent of x). According to the Fundamental Theorem of Algebra, it must have 4 roots
