Find an explicit formula for the arithmetic sequence 81,54, 2, 0... 1. a(n) = 27(n-1)
2. a(n) = 81 - (n + 27)
3. a(n) = 81 - 27(n)
4. a(n) = 81 - 27(n-1)

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true

multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.

step-by-step explanation: