The slope of BC is 
Step-by-step explanation:
Let us revise some notes about slopes of lines
- If two lines are parallel, then their slopes are equal
- If to lines are perpendicular, then the product of their slopes is -1, that means if the slope of one is m, then the slope of the other is

∵ ABCD is a rectangle
∵ AB // CD
∴ The slope of AB = the slope of CD
∵ BC ⊥ AB
∴ The slope of BC × the slope of AB = -1
∵ The slope of AB = 
- To find the slope of BC reciprocal the slope of AB and reverse its sign
∴ The slope of BC = 
The slope of BC is 
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You can learn more about the slope in brainly.com/question/9801816
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<span>The data value must be less than the mean.</span>
Answer: i believe
that x does not have a value
Step-by-step explanation:"variable" or sometimes an "unknown"
Answer:
Rs 2,or 2%profit
Step-by-step explanation:
the price he marked:

(20 percent more than cost price)
The discount he put: 15 percent

Rs102
102 is 2 more than 100
and is 2%profit.
Brainliest please