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Bumek [7]
3 years ago
10

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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Find the sum of the first 6 terms of the sequence: –3, 1, 5, 9, . . .A) 45B) 42C) 48D) 25
Leni [432]

SOLUTION

From the sequence give

–3, 1, 5, 9, . . .

The first term, a = -3

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}

Hence, the answer is 42, option B

3 0
1 year ago
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lutik1710 [3]

Answer:

x = 5

Step-by-step explanation:

2(x+6) = 22

2x+12 = 22

2x = 10

x = 5

6 0
3 years ago
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Aiden bought some noteboks and book covers for the upcoming school year.He bought a total of 13 items.Each notebook costs $1.37,
Darina [25.2K]
1.37x + 1.08y = 16.36
x + y = 13

x = 13 - y
1.37* (13-y) + 1.08y = 16.36
17.81 - 1.37y + 1.08y = 16.36
1.08y - 1.37y = 16.36 - 17.81
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y = 5

x + 5 = 13
x = 13-5
x = 8

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8 0
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The difference of 5x and 12<br> Use n for 'a number'. Do NOT use x for times
sp2606 [1]

Answer:

can you explain more pls

Step-by-step explanation:

7 0
3 years ago
Did Tyson use the order of operations to correctly evaluate the expression? *
nlexa [21]

Answer:

Yes

Step-by-step explanation:

Just trust

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3 years ago
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