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HACTEHA [7]
4 years ago
7

5-10 + 20-...+5(-2)Find the sum of terms of the above series.​

Mathematics
1 answer:
Andru [333]4 years ago
3 0

Answer:

5-x

Step by step:

Let x be the missing blank

5-10+20-x+5(-2)

= 5-10+20-x-10

= 15-x-10

= 5-x

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Dora earns an annual salary of $85,608. How much does she earn every month. A.$6,144. B. $7,134. C.$7,144. D. $7,234
Jet001 [13]
Hi let me help you out there 
There are 12 months in a year 
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you do 
85,608 divided by 12 since there are 12 months in a year
85,608 divided by 12= $7,134
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3 years ago
1.The sum of three consecutive numbers minus 12 is 75
Arte-miy333 [17]

Answer:

The answer is

One:   28, 29, 30

Two: 75,77

Step-by-step explanation:

One

Let the three numbers be (x - 1) , x , and x + 1

(x - 1) + x + (x +1 ) - 12 =  75                Remove the brackets

x - 1 + x + x + 1 - 12 = 75                    Combine the like terms on the left

3x - 12 = 75                                       Add 12 to both sides

3x = 75 + 12

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x = 87/3

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Two

Let the first odd number = 2x -1

Let the second odd number = 2x + 1

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4x + 18 = 170                             Subtract 18 from both sides.

4x = 170 - 18                             Combine like terms on the right

4x = 152                                     Divide by 4

4x/4 = 152/4

x = 38

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2 * 38 + 1 = 77

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3 years ago
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