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mario62 [17]
3 years ago
7

lign="absmiddle" class="latex-formula">
Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Remark

There are occasions where this is very handy to know. Use FOIL.

Solve

F: (First): x*y = xy

O: (Outside): x *(-9) = - 9x

I:(Inside): (-7)*y = - 7y

L:(Last): (-7)*(-9) = 63

Add the terms together

xy - 9x - 7y + 63   <<<< Answer


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What are the first five terms of the sequence generated by the formula below?
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Answer:

The correct option is:

2, 4, 12, 48, 240

Step-by-step explanation:

We have to determine the first 5 terms of the sequence by using following formula:

a_n=2n!

To Calculate the first 5 terms.

Put n = 1

a₁ = 2 (1)!

a₁ = 2(1)

a₁ = 2

Put n = 2

a₂ = 2 (2)!

a₂ = 2 (2·1) = 2(2)

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Put n = 3

a₃ = 2(3)!

a₃ = 2(3·2·1)

a₃ = 2(6)

a₃ = 12

Put n = 4

a₄ = 2(4)!

a₄ = 2(4·3·2·1)

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a₄ = 48

Put n =5

a₅ = 2(5)!

a₅ = 2(5·4·3·2·1)

a₅ = 2(120)

a₅ = 240

8 0
3 years ago
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saveliy_v [14]

Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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Podcza

7 0
3 years ago
I'm not exactly sure how to solve this or what the answer is. ​
arlik [135]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
What is the answer to -3(-6.2) = in simplest form
Ksju [112]

Answer:

18.6

Step-by-step explanation:

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