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uranmaximum [27]
3 years ago
14

Find a formula for the nth term

Mathematics
1 answer:
Airida [17]3 years ago
7 0

Answer:

a_{n} = - 1.3n - 2.4

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference, thus

a_{n} = - 3.7 - 1.3(n - 1) = - 3.7 - 1.3n + 1.3 = - 1.3n - 2.4

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Find the 6th term in the sequence 5, 20, 80
kicyunya [14]
Well the sequence is each number is multiplied by 4. 5*4=20. 20*4=80. 80*4=320. 320*4=1280. 1280*4=5120. The sixth term is 5120.
7 0
3 years ago
Read 2 more answers
Expand and simplify 5(2x-1)-2(3x+2)
kupik [55]

Answer:

4x - 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients/Degrees

Step-by-step explanation:

<u>Step 1: Define</u>

5(2x - 1) - 2(3x + 2)

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Distribute:                               10x - 5 - 6x - 4
  2. Combine like terms (x):          4x - 5 - 4
  3. Combine like terms (Z):         4x - 9
6 0
3 years ago
The length of a rectangular field is 3 more than twice the width. the farmer would like to divide the field into four equal encl
nika2105 [10]
Assume w is the width. the length is 3*2w
To fence the whole outside of farm, he needs:
2(w+6w)=14w meters
Also he needs one width and one length for the enclosed pens. Therefore, the total amount of fencing he would need:
14w+w+6w=21w meters
7 0
4 years ago
Find the slope of the line that passes through (4, 9) and (6, 10).
katrin2010 [14]

Answer:

y = 4/5x + 14/5

Step-by-step explanation:

yee

6 0
3 years ago
Do the graphs of the equations -16x + 12y= 33 and -4x+ 3y =8 graph as the same line?
myrzilka [38]

Answer:

Step-by-step explanation:

Graph  

9

−

16

x

+

12

y

=

33

.

Tap for more steps...

Slope:  

4

3

y-intercept:  

2

x

y

0

2

3

6

Graph  

−

4

x

+

3

y

=

8

.

Tap for more steps...

Slope:  

4

3

y-intercept:  

8

3

x

y

0

8

3

1

4

Plot each graph on the same coordinate system.

9

−

16

x

+

12

y

=

33

−

4

x

+

3

y

=

8

7 0
3 years ago
Read 2 more answers
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