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ICE Princess25 [194]
3 years ago
7

Help :( math for 8th

Mathematics
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

Step-by-step explanation:

x² - 10x - 2 = 0   {Add 2 to both sides}

            +2 = +2

x² - 10x     = 2

Now to find what to add both sides, divide the co-efficient of x by 2

10/2 = 5

Add 5² to both sides

x² - 10x + 25 = 5²

(x - 5)² = 5²

Take square root both sides,

x - 5 = ± 5

x- 5 = 5   ;   x - 5 = -5

  x = 5+5 ;      x = -5 + 5

  x = 10    ;      x = 0

rewona [7]3 years ago
7 0

Answer:

She should add 10x to both sides

Step-by-step explanation:

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asambeis [7]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
What is the common difference for this arithmetic sequence?<br> 29, 42, 55, 68, ..
gregori [183]

Answer:

Common difference is 13 for this arithmetic sequence 29,42,55,68,...

Step-by-step explanation:

Given the arithmetic sequence 29,42,55,68,...

we have to find the common difference of the above sequence.

Common difference of arithmetic sequence is the difference between two successive terms. Therefore, to find common difference we take any pair of successive numbers, and subtract.

Common difference,

d=42-29=13

d=55-42=13

d=68-55=13

Hence, the difference between two successive terms is 3

∴ Common difference is 13  

Step-by-step explanation:

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4 years ago
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