Answer:
45
Step-by-step explanation:
15+10= 25 + 20 = 45
Answer:

Step-by-step explanation:
The perimeter is 2(length) + 2(width), so 2(x+5) + 2(x+4) = 42 m. In solving for x, you find 6. Plug 6 back into your length and width where x originally was, and you find your length to be 11m, and your width to be 10m. Hope this helps!