Evaluate the expression when x = 8 and y = 1
x
-
2y
a. 1/8
b. 4
c. 8
d. 1/4

B)4

Step-by-step explanation:

x

=8

-  

2y=1

8

---

(2)(1)

=

8

---

2

=4

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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step-by-step explanation: