Answer:
Algebracicaly speaking the answer would be either -13.3876 or - 158.612 through the quadratic equation, but these answers don’t make sense in this real world scenario.
Step-by-step explanation:
Multiplying a negative number and another negative number makes the product positive.
So (-2.1)*(-1.4) = 2.94
Answer:
2.3
Step-by-step explanation:

difference between standard deviation and mean deviation
Answer:
Standard deviation is basically used for the variability of data and frequently use to know the volatility of the stock. A mean is basically the average of a set of two or more numbers. Mean is basically the simple average of data
Hope this helps!!

The answer is 140
140 x 0.1 (10% as a decimal) = 14