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Andre45 [30]
4 years ago
11

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:

<em>i</em>

Step-by-step explanation:

The square root of a negative number is identified as an imaginary number (<em>i </em>)

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

The answer is:

<em>i</em>

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 &lt;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
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