3 years ago

21) There are 35 people going to a museum. Each ticket costs $20. What is the

Mathematics

1 answer:

Bas_tet [7]3 years ago

4 0

35 x 20 dollars= 700 dollars. Total cost of all tickets equals 700 dollars

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SOLUTION

From the sequence give

–3, 1, 5, 9, . . .

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The common difference, d = 4 (gotten by adding 4 to the next term).

The number of terms required n = 6.

Formula for sum of an arithmetic sequence is given by

$S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack$

Substituting these values into the equation above we have

$\begin{gathered} S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack \\ S_6=\frac{6}{2}\lbrack2\times-3+(6-1)4\rbrack \\ S_6=3\lbrack-6+(5)4\rbrack \\ S_6=3\lbrack-6+20\rbrack \\ S_6=3\lbrack14\rbrack \\ S_6=42 \end{gathered}$

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lutik1710 [3]

Answer:

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Step-by-step explanation:

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3 years ago

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Darina [25.2K]

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