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ra1l [238]
3 years ago
10

Please help!posted picture of question

Mathematics
1 answer:
ale4655 [162]3 years ago
7 0
We have the following arithmetic series:
 4, 13, 22, 31, 40
 The common difference is given by:
 13-4 = 9
 22-13 = 9
 31-22 = 9
 40-31 = 9
 Since it is an arithmetic series, the difference is constant.
 Answer:
 
The common difference is:
 
9
 
option 4
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Answer: hope this helps


Step-by-step explanation:

Simplifying

1.17 + -0.07a + (-3.92a) = 0

Combine like terms: -0.07a + (-3.92a) = -3.99a

1.17 + -3.99a = 0

Solving

1.17 + -3.99a = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-1.17' to each side of the equation.

1.17 + -1.17 + -3.99a = 0 + -1.17

Combine like terms: 1.17 + -1.17 = 0.00

0.00 + -3.99a = 0 + -1.17

-3.99a = 0 + -1.17

Combine like terms: 0 + -1.17 = -1.17

-3.99a = -1.17

Divide each side by '-3.99'.

a = 0.2932330827

Simplifying

a = 0.2932330827

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