Answer:
Step-by-step explanation:
399*42%= 167.58 the mark up amount
399+167.50=566.50 total
Answer:
a=1, b=1
Step-by-step explanation:
Given the equation: 
If the solution of the equation 
Then to find the values of a and b, we substitute into the equation.
The correct answer is 55/4 which is equal to 13.75.
Hello,
y=x²-x-2=x²-2*1/2*x+1/4-2-1/4=(x-1/2)²-9/4
1. Vertex=(1/2,-9/4)
2. if x=0 then y=0²-0-2=-2
3.The roots:
x²-x-2=0
==>(x-1/2)²-9/4=0
==>(x-1/2-3/2)(x-1/2+3/2)=0
==>(x-2)(x+1)=0
x=2 or x=-1
4. axe of symmetry: x=1/2
Hi there,
1/6d + 2/3 = 1/4 x (d - 2)
1/6d + 2/3 = 1/4d - 1/2
2d + 8 = 3d - 6
2d - 3d = -6 - 8
-d = -14
Hence, D = 14
Hope this helps :)
