A square field has an area of 479ft^2 what is the approximate length of a side of the field? Give you answer to the nearest foot
1 answer:
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Answer:
The number associated with point M is 5.64
Step-by-step explanation:
notice that there are 10 divisions marked with ticks in between 5.6 and 5.7. So that means that the difference between these two numbers : 5.7 - 5.6 = 0.1
has been subdivided into 10: 0.1/10 = 0.01
Therefore we can assign a real number to each of the ticks by adding successively increments 0.01 (starting from the left "5.6"), and learn which number corresponds to the point M.
Please see the attached image that illustrates this, and shows in red the number assigned to the tick where point M is located: 5.64
Recursive Formula
The top row says the first term is 8
The bottom row says that to get the nth term, we subtract 7 from the (n-1)th term. So basically we subtract 7 from each term to get the next term.
Note the subscripts tell us which term we're working with.
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Arithmetic Formula
We have a = 8 as the first term and d = -7 as the common difference.
a(n) = a + d(n-1)
a(n) = 8 + (-7)(n-1)
a(n) = 8 - 7n + 7
a(n) = -7n+15
The nth term arithmetic formula is a(n) = -7n+15
If you plug in n = 1, you should get a(n) = 8
If you plug in n = 2, you should get a(n) = 1
and so on.
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Finding the 10th term
Plug in n = 10 to get
a(n) = -7n+15
a(10) = -7(10)+15
a(10) = -70+15
a(10) = -55
The 10th term is -55