You know 1 is not a root because the sum of the coeffcients of the equation is 14, not zero.
It is fairly easy to try 3 by synthetic division (see attachment), which tells you that 3 is a root and the remaining quadratic factor is x²-3x-5. The quadratic formula tells you the roots of that factor are
... x = (-b±√(b²-4ac))/(2a) = (3±√29)/2
The appropriate choices are
... C. (3-√29)/2
... D. (3+√29)/2
... F. 3
_____
The quadratic formula tells you the solution to
... ax²+bx+c=0
is x = (-b±√(b²-4ac))/(2a)
We have a=1, b=-3, c=-5.
The only number I got was 1. I don’t think you divide 23 unless you want the remainder
Answer:
Part A
x = liters (the milk and water)
0.2 x + 1 = x
Part B
0.2 x + 1 = x
0.8 x = 1
x = 1 : 0.8 = 1.25 liters
Milk
1.25 x 0.2 = 0.25
Answer: r - radius of a circle
d - diagonal of a square inscribed in a circle
a - side of a square inscribed in a circle
shaded area - area of a square inscribed in a circle
The answer will basically be 9
Step-by-step explanation:
The sum of a number.....means addition
ur expression would be : x + 21