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zubka84 [21]
3 years ago
13

Answer: A. 20 units B. 30 units C.40 units D. 50 units

Mathematics
1 answer:
Over [174]3 years ago
4 0
The answer is C.40 units
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The sum of the sequence of 685+678+671+664+...+6
lukranit [14]

Answer:

Sum of the sequence (Sn) = 33,859

Step-by-step explanation:

Given:

Sequence = 685+678+671+664+...+6

Find:

Sum of the sequence (Sn)

Computation:

a = 685

d = 678 - 985 = -7

an = 6

an = a+(n-1)d

6 = 685+(n-1)(-7)

-679 = (n-1)(-7)

97 = n-1

n = 98

So,

Sum of the sequence (Sn) = (n/2)[a+an]

Sum of the sequence (Sn) = (98/2)[685+6]

Sum of the sequence (Sn) = (49)(691)

Sum of the sequence (Sn) = 33,859

3 0
3 years ago
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dybincka [34]
(0,5) (-3, -1) (1, 7) (2, 9) (-5, -5)
5 0
3 years ago
Help
Evgen [1.6K]

Answer:

8.6

Step-by-step explanation:

The square root of 74 is 8.602325267. If you round this number to the nearest tenth you get 8.6

5 0
3 years ago
Which number is a solution of the inequality? 6 ≥ 6k?
german
This isnt a inequality
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Translate this word sentence to mathematical symbols: a. Three more than twice a number
maxonik [38]

2x+3=2

Correct me if I'm wrong.

7 0
3 years ago
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