The figure shows a pair of parallel line segments on a coordinate grid:
2 answers:
Statement number 3? Because it talks about both? Uhm pretty self explanatory.
Can someone help me with this please and thanks !!
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Step-by-step explanation:
Answer:
<h3>Part A</h3>
- d(n) = n(n + 1)/2
- n = 1 ⇒ d(1) = 1(1 + 1)/2 = 2/2 = 1, proved
<h3>Part B</h3>
- d(k) + (k + 1) =
- k(k + 1)/2 + (k + 1) =
- [k(k + 1) + 2(k + 1)]/2 =
- [(k + 1)(k + 1 + 1)]/2 =
- d(k + 1)
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Step-by-step explanation:
