Answer:

Step-by-step explanation:
To work out x is easy as they are corresponding angles x will also equal 50
however to work out y you just need to minus 180 and 50 to give 130

Perimeter = 2L + 2W → 240 = 2L + 2W → 120 = L + W → 120-L = W
Area = L x W → Area = L(120-L) → Area = 120L - L²
Find the derivative: dA/dL = 120 -2L → 0 = 120 - 2L → L = 60
Area = 120L - L² = 120(60) - (60)² = 7200 - 3600 = 3600
The maximum area is 3600 yds²
Jane's friend is wrong, the original price would be $200
Answer:
Ok, so I think I may have got it right.
Step-by-step explanation:
So in each row going left to right is the following numbers
1st row: 2, 3, 4, 5
2nd row: 3, 4, 5, 6
3rd row: 4, 5, 6, 7
4th row: 5, 6, 7, 8
b) 1/16
c) 6/16
I'm not exactly sure if I got everything right, but I hope this helps :)