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earnstyle [38]
3 years ago
12

Given the sequence -3, 9, -27, 81, -243, ..., find the recursive formula.

Mathematics
1 answer:
Tanzania [10]3 years ago
5 0

Answer:

a_{n} = - 3a_{n-1}

Step-by-step explanation:

There is a common ratio between consecutive terms of the sequence, that is

r = 9 ÷ - 3 = - 27 ÷ 9 = 81 ÷ - 27 = - 243 ÷ 81 = - 3

The recursive formula is of the form

a_{n} = ra_{n-1} = - 3a_{n-1}

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25/6-4x=-9x+5/6 Steps?
LenKa [72]

Answer:

<h2>X=1.33</h2>

solution,

\frac{25}{6}  - 4x =  \frac{ - 9x + 5}{6}  \\  \: or \:  \frac{25 - 4x \times 6}{6}   =  \frac{ - 9x + 5}{6}  \\ or \:  \frac{25 - 24x}{6}  =  \frac{ - 9x + 5}{6}  \\ or \: 6(25 - 24x) = 6( - 9x + 5) \\ or \: 150 - 144x =  - 54x + 30 \\ or \:  - 144x + 54x = 30 - 150 \\ or \:  - 90x =  - 120 \\ or \: x =  \frac{ - 120}{ - 90}  \\or \:  x =  \frac{4}{3}  \\ x = 1.33

Hope this helps.

Good luck on your assignment.m

6 0
3 years ago
PLZ HELP, 4/5 * 2/3. exsplain how you got it too. i just need an exsplaination. step by step.
slavikrds [6]

Answer:

8/15

Step-by-step explanation:

4x2=8

5x3=15

7 0
2 years ago
Read 2 more answers
Please help!!!!!!!!!!!
rjkz [21]

Answer:

95°

Step-by-step explanation:

[character limit thing]

8 0
3 years ago
Hi how can I graph this if it dosn't have a slope?<br> 1. y = (2/3)x - 1 <br> y = -x + 4
12345 [234]

System of Linear Equations entered :

[1] y - 2x/3 = -1

[2] y + x = 4

// To remove fractions, multiply equations by their respective LCD

Multiply equation [1] by 3

// Equations now take the shape:

[1] 3y - 2x = -3

[2] y + x = 4

Graphic Representation of the Equations :

-2x + 3y = -3 x + y = 4

Solve by Substitution :

// Solve equation [2] for the variable x

[2] x = -y + 4

// Plug this in for variable x in equation [1]

[1] 3y - 2•(-y +4) = -3

[1] 5y = 5

// Solve equation [1] for the variable y

[1] 5y = 5

[1] y = 1

// By now we know this much :

y = 1

x = -y+4

// Use the y value to solve for x

x = -(1)+4 = 3

I hope this help you

8 0
3 years ago
How can you justify that the function shown in the table is linear?
Leya [2.2K]

Answer:

the answer is b bcz i think

3 0
3 years ago
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