Answer:
the estimated answer is 10
Step-by-step explanation:
you have to round both numbers to the nearest ten and then subtract
For this case we have by definition, if "y" varies directly with "x", then it is true that:

Where:
k: It is the constant of proportionality
We have the following equation:

So, as mentioned above we have to:

Answer:

Option B
Answer:
A random variable is a variable whose values are unknown. Random variable are mostly used in regression analysis to determine the statistical relationship between two entities.
Step-by-step explanation:
There are two types of random variable;
1. The discrete random variable and
2. The continuous random variable.