I need an answer asap please !!!!!!!

Mathematics

1 answer:

Elina [12.6K]3 years ago

7 0

Answer:

I think the answer is 30 kilometers. I could be wrong

Step-by-step explanation:

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Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. a(n)=1+(n-1)(5.7)

Klio2033 [76]

To find first term, you need substitute
n=1
<span>a(n)=1+(n-1)(5.7)
</span>a(1)= 1+(1-1)(5.7)=1
a(1) =1

Fourth term,
n=4
a(4)=1+(4-1)(5.7)
a(4) = 18.1

For 10th term,
n=10
a(10)=1+(10-1)(5.7)=52.3

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3 years ago

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 $(\frac{ln(\frac{1}{8})}{9}, \infty)$

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3 years ago

Wat is 1/2 ÷ 1/3 please show work and simplify

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Make the denominators the same as the LCD 1/3 times 3 subtracted by 1/3 times 2
So it would be 3/6 subtracted by 2/6
The answer is 1/6

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4 years ago

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3 years ago

A recipe for 1 gallon of fruit punch calls for 3/4 of orange juice.how many cups of orange juice are needed to make 8 gallons of

monitta

Answer:

Step-by-step explanation:

3/4 = 0.75

0.75 * 8 = 6

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3 years ago

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