The rule for being the nth item in a certain sequence is n(n+1)/2. what is the 4th term in this sequence ?
1 answer:
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ANSWER
The correct answer is 19.1
EXPLANATION
The perimeter of triangle OQR is the sum of the distance around the triangle.
Thus,
We can observe that two of the angles are equal.
The angles that are equal measures 62° each.
Therefore triangle OQR is an isosceles triangle. This means that
Hence,
units.
2n<2
divide both sides by 2 to solve/isolate n
n<1
divide both sides by 2 to solve/isolate n
n<1