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BaLLatris [955]
3 years ago
6

Slove for x 2m-nx=x+4

Mathematics
1 answer:
Svetach [21]3 years ago
6 0
Answer:

Therefore, x = -2m+4/-n-1
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Show that 4x - x? – 7 is always<br> negative.<br><br><br><br><br> Help
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                                          <em>Question No 7</em>

Answer:

Please check the explanation.

Step-by-step explanation:

Show that 4x - x² - 7 is always negative.

Given

4x - x² - 7

4x - x² - 7 is always negative because:

  • -x²-7 will alwas be negative for all the values of x,
  • The value of  - x² - 7 will always be less than 4x for all the values of x

Hence, 4x - x² - 7 is always negative

For example,

let suppose we enter x = 1

4(1)-1^{2} -7\\=4-1-7\\=4-8\\=-4

let suppose we enter x = -1

4(-1)-(-1)^{2} - 7\\= -4 - 1 - 7\\= -12

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3 years ago
Please help me answer this!!
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1.5w=3 and that is divided to w=2
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-7 2/3 + (-5 1/3) + 8 3/4=?<br> A: 6 7/12<br> B: -4 5/12<br> C: -21 11/12<br> D: 4 2/3
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Its B

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