How to solve | k-10 | = 3

k=7    or    k=13

Step-by-step explanation:

I I is absolute value

Ik-10I=3                      I13-10I=3                 k=13

Ik-10I=33                     I7-10I=3                I7-10I=-3        I-3I=3        k=7

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

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