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MariettaO [177]
1 year ago
14

What is the period of the function f(x) = -4 cos(5x-9) - 7? Give an exact value. units

Mathematics
2 answers:
ehidna [41]1 year ago
5 0

Answer:

2pi/5

Step-by-step explanation:

The only thing in this equation that affect the period is the '5' in front of the 'x'

cos period is usually 2pi

 this is compressed by 5    

    period = 2pi/ 5

N76 [4]1 year ago
4 0

General equation

  • y=Acos(Bx+C)+D

Our Equation

  • y=-4cos(5x-9)-7

On comparing

  • A=-4
  • B=5
  • C=-9
  • D=-7

Now

Period

  • 2π/B
  • 2π/5
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13 mm<br> 17 mm<br> What would the area of the triangle
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Answer:

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Step-by-step explanation:

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3 years ago
Find the area of an equilateral triangle with radius 22 cm. Round to the nearest whole number.
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Answer:this item, we are given with the radius equal to 22 cm.

In this measurement of the radius is the hypotenuse of the 30°-60°-90° triangle formed with the half the measurement of the side of the equilateral triangle being opposite to the 60°  and equal to the hypotenuse times (1/2)(√3)

Step-by-step explanation:

If we let s be the side of the triangle then,

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Multiplying the equation by 2,

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Substituting,

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The area of the equilateral triangle is computed through the equation,

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Substituting,

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Therefore, the answer to this item is the first choice. 

4 0
3 years ago
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3 years ago
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Have a fantastic day!

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