Suppose T(n) = n(n +1)/2. Find T(10).

Mathematics

1 answer:

jek_recluse [69]3 years ago

4 0

Answer:

D. 55

Step-by-step explanation:

$T(n) = \frac{n(n +1)}{2} \\ \\ T(10) = \frac{10(10 +1)}{2} \\ \\T(10) = \frac{10\times 11}{2} \\ \\T(10) = 5 \times 11 \\ \\ \huge \red{ \boxed{T(10) = 55}}$

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