Help me please! Would be greatly appreciated! :)

MR=20

Step-by-step explanation:

These appear to be isosceles triangles, so their bases are equal on both sides. For the little triangle in the center, one side is 6, so the other will also be 6. Now the larger one has MN=4, so QR=4 as well.

6+6+4+4=20.

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

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