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4 years ago

Given: cos(2x)=-1/9 Angle x is in quadrant I. Find: cos(x)

Mathematics

1 answer:

sergey [27]4 years ago

5 0

My opinion about this answer is 7

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The average ticket price for a concert at the opera house was $50. The average attendance was 4000. When the ticket price was ra

kotegsom [21]

Answer

given,

opera house ticket = $50

attendance = 4000 persons

now,

opera house ticket = $52

attendance = 3800 person

assuming these are the points on the demand curve

(x, p) = (4000,50) and (x,p) = (3800,52)

using point slope formula

$p-50 = \dfrac{50-52}{4000-3800}(x - 4000)$

$p-50 = \dfrac{-2}{200}(x - 4000)$

$p-50 = \dfrac{-x}{100}+ 40$

$p = \dfrac{-x}{100}+ 90$

R(x) = x . p

$R(x) = x (\dfrac{-x}{100}+ 90)$

$R(x) = \dfrac{-x^2}{100}+ 90x)$

$\dfrac{d}{dx}(R(x)) = \dfrac{d}{dx}(\dfrac{-x^2}{100}+ 90x))$

$\dfrac{d}{dx}(R(x)) = (\dfrac{-2x}{100})+90)$

at $\dfrac{d}{dx}(R(x)) = 0$

$\dfrac{-2x}{100}= -90$

x = 4500

$\dfrac{d^2}{d^2x}(R(x)) = -ve$

hence at x =4500 the revenue is maximum

for maximum revenue ticket price will be

$p = \dfrac{-4500}{100}+ 90$

p = $45

6 0

4 years ago

Find the midpoint of the segment with the given endpoints.

andrew-mc [135]

To solve for the midpoint of the segment we use the equation that is given as:

(x1 + x2 / 2) , (y1 + y2 / 2)

For the points given,

(x1 + x2 / 2) , (y1 + y2 / 2)
(3+ 2 / 2) , (-5 + 9 / 2)
(5/2 , 2) or (2.5 , 2)

Hope this answers the question. Have a nice day. Feel free to ask more questions.

7 0

4 years ago

Read 2 more answers

Ifj. 1. what is the value of i

melomori [17]

Answer:

i

Step-by-step explanation:

The square root of a negative number is identified as an imaginary number (i )

An imaginary number (i) with exponent 3 or any other exponent remains an imaginary number.

The answer is:

i

3 0

3 years ago

Your band is starting to get a lot of offers to play at parties and dances, where you make $25 to play for an hour. Two of your

Hoochie [10]

25/10=2.5
10%=2.5
5%=1.25
15%=3.75
£3.75= Mattie
£5=Ted
Ted is charging more

4 0

4 years ago

Can someone help me please <3

AVprozaik [17]

Step-by-step explanation:

4(2x-3):reason - Distributive property

8x-12=:reason - addition property of equality

8x=40: reason - division property of equality

x=5: reason - given

hope this answer helps u.

please mark it as the brainliest

8 0

3 years ago