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SVETLANKA909090 [29]
2 years ago
15

Write an explicit formula for an, the nth term of the sequence 11,2,-7

Mathematics
1 answer:
abruzzese [7]2 years ago
8 0

Answer:

a_{n} = 20 - 9n

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 2 - 11 = - 7 - 2 = - 9

This indicates the sequence is arithmetic with nth term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 11 and d = - 9 , then

a_{n} = 11 - 9(n - 1) = 11 - 9n + 9 = 20 - 9n

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4 1/4 = 16/4

17/4 : 4/34 =

17/4 * 4/34 =

1/2


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If 7x + 4 = -19 + 5x, then 2x – 14 equals<br>A-23<br>B 23<br>C-37<br>D-14​
drek231 [11]

Answer:

C

Step-by-step explanation:

Here we have the question,

7x+4 = -19 + 5x

Now we add 19 to both sides,

7x + 4 + 19 = -19 + 19 + 5x

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Now we subtract 7x from both sides,

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Now we plug this in into 2x - 14,

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3 years ago
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Illusion [34]

Answer :

a + 1/4b

6/a + b/4

ab- 17

b/2 + 4

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Step-by-step explanation:

5a - 6 = 9

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8 0
3 years ago
If x &lt; 5 and x &gt;c, give a value of c such that there
Ierofanga [76]

Answer:

c = 6

Step-by-step explanation:

The compound inequality is c < x < 5

If we want a value of c such that there are no solutions, we need to make that inequality false.

From the inequality we can see that 5 must be greater than c to be true.

Therefore, we need to choose a value smaller or equal than 5.

For example, c=6.

If c = 6, that means that x is greater than 6 and smaller than 5. That's impossible, there is no number that meets that.

Therefore, our compound inequality 6 < x < 5 has no solutions.

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2 years ago
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