Y = 4 x 2^-6
y = 4 x 1/2^6
y = 4 x 1/64
y = 1/16
We can find the number that is halfway between 6 and -10 by finding their average.
Number = (-10+6)/2 = -4/2 = -2
Therefore, the number halfway between them is -2.
Answer:
Step-by-step explanation:

since we know that
in this expansion is 
thus 
Hope that helps!
The longest side would be C
1. Answer=66cards
Lets use the variable 'x' to represent the number of baseball cards in Keith's collection that he started with. The following equation can be made.
(x+6)/2=36
multiply both sides by 2
x+6=72
subtract 6 from both sides
x=66 cards
2. Answer=$12
Lets use the variable 'a' to represent Sara's allowance. The following equation can be made:
(a/2)+7=13
subtract 7 from both sides
a/2=6
multiply both sides by 2
a=$12