Answer:
$
Step-by-step explanation:
Let 
the cost of one brownie, 
cost of one cookie
Times 
on both sides on the second equation above to get the following:
To find the value of 
, use substitution:
the cost of a brownie is $
Hope this helps :)
There are 40 centimeters in 400 millimeters
Please rate my answer
Answer:
see below
Step-by-step explanation:
3y = -9
Divide each side by 3
3y/3 = -9/3
y = -3
The median is the number in the middle when all of the numbers are placed in order (from lowest to highest).
15; 17; 19; 42; 78; 85; 93
The answer in this case would be 42.
Answer:
2
Step-by-step explanation:
-2y+10+2y-8
-2y+2y+10-8
10-8
2
