Answer:
38%
Step-by-step explanation:
Original price = $ 80
Price after reduction = $ 49.60
Reduction = 80 - 49.60 = $30.40
Percentage of decrease = 

= 38%
To solve for the variable "w" you only need to use algebra to get it alone on one side of the equals sign.
Answer:
D
-5x + y = 7
x+3y = 5
Step-by-step explanation:
when you graph the equations, they are parallel. as you know, solutions are the point where the lines meet. if they are parallel, it's not possible for the lines to intersect.
To find the mean absolute deviation, u have to find the mean of the data set first. after u find the mean, u subtract to find the numbers distance from the mean. after u do that, u then add up all the new numbers and then divide by how many numbers there are in the data set, and whatever ur answer ends up being is the mean absolute deviation of ur data set.