<span> </span> <span>if you want to determine the perimeter / length, use a normal measure - ft.
The area is

<span>and the volume</span></span>
The sum of all angles in a triangle is equal to 180.
75 + 70 + 5 + 3x = 180
150 + 3x = 180
3x = 180 - 150
3x = 30
x = 10
Third angle:
5 + 3(10)
35
Answer:
a(n) = 37 - 5(n -1)
Step-by-step explanation:
Notice that each new term is obtained by subtracting 5 from the previous term. Thus, this is an arithmetic sequence with common difference -5 and first term 37.
The explicit formula for the nth term is a(n) = a(1) - 5(n - 1) = 37 - 5(n -1)
A pays 3/5 x 85 = £51,-
b pays 2/5 x 85= £34,-
So the answer is £51,-