Please help! its Measurement, I Attached a photo! thanks!

51 ft 4 inches

Step-by-step explanation:

9 ft   8 in

18 ft  3 in

15 ft   7 in

7 ft    10 in

49 ft  28 inches

But there are 12 inches in 1 ft

24 inches in 2 ft

Subtract 24 inches and add 2 ft

49 ft  28 inches

+2    - 24

51 ft   4 inches

if x decreases by 4 then y increases by 10

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