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podryga [215]
3 years ago
13

Find the average rate of change of the function f over the given interval. f(x)=x^2-6/4x-8 from x=6 to x=8

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0
f(x)=\frac{x^2-6}{4x-8}
\\
\\f(8)=\frac{8^2-6}{4\times8-8}= \frac{58}{24} = \frac{29}{12} 
\\
\\f(6)=\frac{6^2-6}{4\times6-8}= \frac{30}{16} = \frac{15}{8} 
\\
\\ \frac{f(8)-f(6)}{8-6} =\frac{\frac{29}{12} - \frac{15}{8} }{2} =\frac{\frac{116}{48} - \frac{90}{48} }{2} =\frac{\frac{26}{48}  }{2} =\frac{26}{96}=\frac{13}{48}
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A quadrilateral has angles measuring 105°,80°and 45°.What is the measure of the fouth angle?​
valentina_108 [34]

The measurement of fourth angle is: 130°

Further explanation:

Let A, B, C and D be the four angles.

m∠A=105°

m∠B=80°

m∠C=45°

We know that the sum of interior angles of a quadrilateral is 360°

So,

m∠A+m∠B+m∠C+m∠D=360°

105°+80°+45°+m∠D=360°

230°+m∠D=360°

m∠D=360°-230°

m∠D=130°

The measurement of fourth angle is: 130°

Keywords: Quadrilateral, Interior angles

Learn more about quadrilateral at:

  • brainly.com/question/5528742
  • brainly.com/question/5527192

#LearnwithBrainly

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3 years ago
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VARVARA [1.3K]

Answer:

x = 77 ft

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