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givi [52]
3 years ago
9

Solve this equation |x − 5| + 2 = 5

Mathematics
1 answer:
Amanda [17]3 years ago
4 0

Step-by-step explanation:

or, x + 5 + 2 = 5

or, x + 7 = 5

or, x = 5 - 7

or, x= -2

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It will be charged 5 times
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Use the following bond listing for Pacific Bell to answer the following:
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An item is regularly priced at $21. It is on sale for 15% off the regular price of the item now
Lynna [10]

Answer:

$ 17.85

Step-by-step explanation:

Regular price = $ 21

Reduction = 15% of regular price

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8 0
3 years ago
Is this equation an identity? (2x+1)^2-(x+1)^2=3(x+1)^2-1
sergey [27]

Answer:

See below, please

Step-by-step explanation:

Left side

{(2x + 1)}^{2}  -  {(x + 1)}^{2}

= (4 {x}^{2}  + 4x + 1) - ( {x}^{2}  + 2x + 1)

= (4 {x}^{2}  -  {x}^{2} ) + (4x - 2x) + (1 -1 )

= 3 {x}^{2}  + 2x

Right side

3 \times  {(x + 1)}^{2}  - 1

= 3 \times ( {x}^{2}  + 2x + 1) - 1

= 3 {x}^{2}  + 6x + 3 - 1

= 3 {x}^{2}  + 6x + 2

After compared with both sides, we can make a conclusion that

This equation isn't an identity.

6 0
2 years ago
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