Roger has a nail that is 12 centimeters long. he measures and records the length of the nail as 15 centimeters. what is the percent error in roger's measurement?

D.) 25%

Step-by-step explanation:

(15-12)   *100

            =  (3*100)/12=25%

   12

1 is b and 2 is d

step-by-step explanation:

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