Solve the simultaneous equations 2x + 3 = 13 4x +- y = -2

x=5 and y=22

Step-by-step explanation:

2x+3=13

2x+3+−3=13+−3(Add -3 to both sides)

2x=10

= (Divide both sides by 2)

x  = 5

Substitute5forxin4x−y=−2:

4x−y=−2

(4)(5)−y=−2

−y+20=−2(Simplify both sides of the equation)

−y+20+−20=−2+−20(Add -20 to both sides)

−y=−22

=  (Divide both sides by -1)

y=22

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

597

step-by-step explanation: