Answer:7.50x6.74 =50,5500
Step-by-step explanation:
Answer:
The width of the field is 65 feet.
The length of the field is 780 feet.
A number plus 5 is greater then or equal to 10.
an = a(n-1) - 7
the second term is smaller than the first term 7.
a20 = a19 - 7
a19 = a18 - 7
=> a20 = (a18 - 7) - 7
Then you can accumalate until a1
-> a20 = a1 - 19*7 = 86 - 19*7 = -47
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