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anyanavicka [17]
3 years ago
14

What is the Inequality and Solution of: The sum of a number and 19 is at least 8.2 ?

Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
X + 19 >= 8.2

x >= 8.2 -19 >= -10.8
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A community bird-watching society makes and sells simple bird feeders to raise money for its conservation activities. The materi
valentina_108 [34]

Answer:

N(x) = 40 - 2x

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maximum profit = 13

Step-by-step explanation:

given data

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price = $10 each

solution

we consider here price per feeder = x

and profit per feeder  id here formula   = x - 6

so that here

total profit will be

P (x)  = ( x - 6 ) Nx

here N(x) is number of feeders sold at price =  x

so formula for N (x)  is here

N(x) = 20 - 2 ( x - 10 )    

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so that

P(x) = (x-6) ( 40 - 2x)

P(x) = -2x² + 52 x - 240

since here

a = -2

b = 52

c = -240

a < 0

so quadratic function have maximum value of c - \frac{b^2}{4a}

so it will be

maximum value = -240 - \frac{52^2}{4(-2)}

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so here maximum profit attained at

x = \frac{-b}{2a}

x = \frac{-52}{2(-2)}

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3 0
3 years ago
What are the two words that allow you to check your division problem backward?
Dahasolnce [82]

Answer:

inverse operation

Step-by-step explanation:

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Hope this helps!! Have a wonderful day :3

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3 years ago
How do I do this. Please help
MakcuM [25]

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Step-by-step explanation:

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Rashid [163]

Answer:

This is a reflection about the x-axis.


Step-by-step explanation:

A reflection about the x-axis has the rule

[x,y]-> [x,-y].

Therefore

M[x,y] = [x,-y}

Let M=

|a  b|

|c  d|

Then the matrix multiplication gives

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cx+dy=-y............(2)

Solving the previous equations (1) and (2) gives

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c=0, d=-1

giving M as

|1  0|

|0 -1|


4 0
3 years ago
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