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GrogVix [38]
3 years ago
15

< 5 and <7 are vertical angles.

Mathematics
1 answer:
marishachu [46]3 years ago
7 0

Answer:

value of x = 19°

Step-by-step explanation:

we know that vertical opposite angles are equal hence Angle 5 = Angle 7

so,

  • 5x+10 = 105°
  • 5x = 95°
  • x = 19°

hence value of x = 19°

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---------------------------------------------------------------------

Part B. You'll need to be more specific. What I would do is show how the quantity (-2x+1)^4 is always nonnegative. This is because x^4 = (x^2)^2 is always nonnegative. So (-2x+1)^4 >= 0. The coefficient -10a is either positive or negative depending on the value of 'a'. If a > 0, then -10a is negative. Making h ' (x) negative. So in this case, h(x) is monotonically decreasing always. On the flip side, if a < 0, then h ' (x) is monotonically increasing as h ' (x) is positive.

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