Answer:
16.2 units
Step-by-step explanation:
Greater angle: 180 - 72 = 108
D² = 10² + 10² - 2(10)(10)cos(108)
D² = 261.8033989
D = 16.18033989
f(3) = 1 means the value of a member of the sequence when x = 3 is 1
We know that
If reflected over y = x
<u>then use</u>
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=====================
similar as (x, y) → (y, x)
<u>multiply the matrixes to get the final answer</u>
Answer: 24.625
<u>Order the numbers</u>
Before: 17,24,26,13,4,13,20,80
After: 4,13,13,17,20,24,26,80
<u>Add</u>
4+13+13+17+20+24+26+80=197
<u>Divide</u>
197÷8=24.625