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bixtya [17]
3 years ago
9

Help please due at 11:00 PM please help

Mathematics
2 answers:
dezoksy [38]3 years ago
7 0
I have no idea but I need points :(
RoseWind [281]3 years ago
4 0

Answer:

<h2>60</h2>

Step-by-step explanation:

<h3>Using Unitary Method </h3>

first pay 100 = second pay 60

first pay ( 100 / 60 ) = second pay 1

first pay ( 100 / 60 ) * 36 = second pay 36

first pay 60 = second pay 36

[ Note : ( 100 / 60 ) * 36 = 60 ]

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Consider the function on the interval (0, 2π). f(x) = 7 sin2(x) + 7 sin(x) (a) Find the open interval(s) on which the function i
-BARSIC- [3]

Answer with Step-by-step explanation:

Given

f(x)=7sin(2x)+7sin(x)

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f'(x)>0\\\\14cos(2x)+7cos(x)>0\\\\2cos(2x)+cos(x)>0\\\\2(2cos^{2}(x)-1)+cos(x)>0\\\\4cos^{2}(x)+cos(x)-2>0\\\\(2cos(x)+\frac{1}{2})^2-2-\frac{1}{4}>0\\\\(2cos(x)+\frac{1}{2})^2>\frac{9}{4}\\\\2cos(x)>\frac{3}{2}-\frac{1}{2}\\\\\therefore cos(x)>\frac{1}{4}\\\\\therefore x=[0,cos^{-1}(1/4)]\cup [2\pi-cos^{-1}(1/4),2\pi ]

Similarly for decreasing function we have

[tex]f'(x)

Part b)

To find the extreme points we equate the derivative with 0

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4 0
4 years ago
Help me with this plss<br>If x^2+1/x^2<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B%5Cfrac%7B1%7D%7Bx%5E2%7D%3D10%3B%20the
Tju [1.3M]

(<em>x</em> + 1/<em>x</em>)² = <em>x</em> ² + 2 + 1/<em>x</em> ² = 10 + 2 = 12

==>   <em>x</em> + 1/<em>x</em> = ±√12

6 0
3 years ago
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