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3 years ago

Which of the following is an arithmetic sequence?

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

8 0

In order to find the answer, we have to find common difference for each.

Option 1.

first difference= 3-(-1) =4

second difference = -3-3=-6

here we dont have a fixed common difference, so its not an arithmetic series.

Option 2.

first difference= -2-2=-4

second difference = -6-(-2) = -4

third difference = -10-(-6) =-4

here we have a fixed common difference, so its an arithmetic series.

Option second is the correct answer

Tju [1.3M]3 years ago

3 0

In order to find the answer, we have to find common difference for each.

Option 1.

first difference= 3-(-1) =4

second difference = -3-3=-6

here we dont have a fixed common difference, so its not an arithmetic series.

Option 2.

first difference= -2-2=-4

second difference = -6-(-2) = -4

third difference = -10-(-6) =-4

here we have a fixed common difference, so its an arithmetic series.

Option second is the correct answer

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KatRina [158]

1.a. correct

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1.c. correct

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2.a. 7 - x + 3w - 9

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Variables: x, w

Coefficients: -1, 3

Constants: 7, -9

2.b. -g + 8k - 3 - 7

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Variables: g, k

Coefficients: -1, 8

Constants: -3, -7

3.a. correct

3.b. correct

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4.a. 4(2x + 3) = 8x + 12

4.b. -2(3x + 4) = -6x - 8

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3 years ago

To test Upper H 0 : sigma equals 1.6 versus Upper H 1 : sigma less than 1.6, a random sample of size n equals 21 is obtained fr

kicyunya [14]

Answer:

Answer: is answer hope this helps

Step-by-step explanation:

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3 years ago

The subject of the formula below is y. y =x+5 rearrange the formula to make x the subject.

o-na [289]

Answer:

x = y - 5

Step-by-step explanation:

Given

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4 years ago

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Alla [95]

Answer:

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3 years ago

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erastova [34]

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3. x^2+6x =16
-------------------------
(6/2)^2 = 9
x² + 6x + 9 = 16 + 9
(x + 3)² = 25

4. x^2-10x =11
------------------------
(-10/2)² = 25
x² - 10x + 25 = 11 + 25
(x -5)² = 36

5. x^2-9x =0
--------------
(-9/2)² = 81/4
x² - 9x + 81/4 = 81/4
(x - 9/2)² = 81/4

6. x^2+16x =15
---------------
(16/2)² = 64
x² + 16x +64 = 15 + 64
(x + 8)² = 79

7. 3x^2+18x-81=0
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x² + 6x = 27
(6/2)² = 9
x² + 6x + 9 = 27 + 9
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A polynomial with a general equation of ax² + bx + c = 0 has a root determined using this formula:

$x= \frac{-b \ +/- \ \sqrt{ b^{2}-4ac } }{2a}$

Just substitute the coefficients to the formula to find the roots

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3 years ago

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