Iwill mark as what is the length of side bc of the triangle?

BC = 24

Step-by-step explanation:

since ABC is an isosceles triangle

<C = <B,  then AC = AB

AC=AB

x+8 = 2x-1

subtract x from each side

x+8-x =2x-1-x

8 =x-1

add 1 to each side

8+1 = x-1+1

9 =x

BC = 3x-3

BC = 3(9) -3

BC= 27-3

BC = 24

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

its 50 miles away from the starting point