3 years ago

12.45 times 6.5 equals

Mathematics

2 answers:

Kaylis [27]3 years ago

8 0

Try using a calculator next time, but here you, 80.925

Vesna [10]3 years ago

4 0

80.925 is the correct answer

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Pleases help with 4-9!

Serhud [2]

Step-by-step explanation:

The answer is

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3 years ago

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

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1 year ago

3xy - 4y when y = 2 and x = 5

tia_tia [17]

Answer:

Step-by-step explanation:

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3 years ago

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evablogger [386]

12A + 2 + A - 1 = a + 12a + 1 = 13a + 1

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3 years ago

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Please help me answer this question.

LUCKY_DIMON [66]

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hope it helped

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