Let x = width x + 30 = length 2x + 2(x+30) = 340 4x + 60 = 340 4x = 280 x = 70 Width x = 70 yd
Length x + 30= 100 yd
Perimeter = 2l + 2w= 2l=200 w=140 200+140 = 340 yd
Step-by-step explanation:
answer is shown above, that is a tricky question though.
Answer:
n²-7n-21
Explanation:
Given the expression:

First, open the brackets:

Next, bring the like terms together and simplify:
