So marked down 10 then 12 so 10+12=22
mark down total is 22%
100-22=78
78% of 109=0.78 times 109=85.02
tax of 6%
6+100=106%
85.02 times 1.06=90.1212 or about 90.12
90<90.12
no she is short 12 cents
Answer:
x = 12.6
Step-by-step explanation:
Sum of measure of all the arcs of a circle = 360°
m(arc CD) + m(arc CED) = 360°
Since, m(arc CED) = (20x)°
And m(arc CD) = (8x + 6)°
By substituting these measures in teh expression,
(20x)° + (8x + 6)° = 360°
(20x + 8x) + 6 = 360
28x = 360 - 6
28x = 354
x = 
x = 12.64
x = 12.6
Dog No dog Total
Cat 31 10 41
No cat 24 7 31
Total 55 17 144
Move all terms not containing x to the right side of the equation
x=9