11-2m-(n+5+(-m)-3n+8)
11-2m-n-5-m+3n-8
Answer: -2-3m+2n
400 / 10 = 40
so every 1 inch = 40 feet
3.125 * 40 = 125 feet between the exhibits
please mark brainliest
Cos(t/2) I got .45 is that what you were looking for or do I need to plug it into the equation up top? can you give me notes of something? cos( -9/11/2) = .45