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lana66690 [7]
3 years ago
13

Ma Johnson gives 1/6 of 1 pizza to each of her 25 students

Mathematics
1 answer:
Phoenix [80]3 years ago
7 0

Answer:

25/6 pizzas are needed. (4 1/6)

Step-by-step explanation:

25 x 1/6 is 4 1/6

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E^(8x)+e^(-x) find the interval on which f is increasing
saveliy_v [14]
Assuming ya mean
f(x)=e^{8x}+e^{-x}
take derivitive
remember dy/dx e^x=e^x
also the chain rule

so
f'(x)=8e^{8x}+-1e^{-x}
find where it equals 0
0=8e^{8x}+-e^{-x}
e^{-x}=8e^{8x}
multiply both sides by e^x
1=8e^{9x}
divide both sides by 8
\frac{1}{8}=e^{9x}
take ln of both sides
ln(\frac{1}{8})=ln(e^{9x})
ln(\frac{1}{8})=9x
divide both sides by 9
\frac{ln(\frac{1}{8})}{9}=x

x≈-1/5
f'(-1)<0
f'(0)>0

so it is increasing from x to infinity

the interval it is increasing on is (\frac{ln(\frac{1}{8})}{9},  \infty)
6 0
3 years ago
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PSYCHO15rus [73]

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y=5x-1...

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3 years ago
The perimeter of a rectangle is 20xm. the length is 6cm longer than the width. what are the length and width of the rectangle?
aleksley [76]
Let width be x 

length= 6+x 

p=2(l+w) 
20=2(6+x+x) 
10=2x+6 
10-6=2x 
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3 years ago
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Bas_tet [7]

Answer:

100

Step-by-step explanation:

2(5)^2

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