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Express the matrix like , where if and if . ( is known as kronecker's delta)
In the same form we express the matrix .
The firs index indicate the row and the second the column.
By the multiplication of matrices we have , where
because only is non-zero in the last sum.
therfore we have .
In the same manner we have
, where
And so,
Number of long distance calls made = m
Total phone bill = $3.40 = 340 cents
Cost per minute for long distance call = 3.3 cents
Then
<span>3.3m = 3.40
On solving we get
m = 340/3.3
= 103 minutes
From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the first option. I hope the answer has come to your help.</span>
Answer:
Option d = 40%
Step-by-step explanation:
It's not the direct answer you need, you have to put the point and draw the line on it.