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Goryan [66]
3 years ago
9

Twice a number is 12 more than five times the number

Mathematics
1 answer:
inna [77]3 years ago
4 0
N x 2 = 12 + 5n
2n - 5n = 12
-3n = 12
3n = -12
n = -4
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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

P(x) = -2x² + 52 x - 240

maximum profit = 13

Step-by-step explanation:

given data

feeder cost = $6

average sell = 20 per week

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 )    

N(x) = 40 - 2x

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)}

maximum value = 98

so here maximum profit attained at

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

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

x = 13

maximum profit = 13

3 0
3 years ago
Help plz i dont know what to do
Firlakuza [10]

Answer:

<u><em>The area of the irregular figure is 140 sq. ft.</em></u>

Step-by-step explanation:

<em>Triangle: </em>

<em> </em>

<em>16-12=4 </em>

<em> </em>

<em>6 x 4 = 24 </em>

<em> </em>

<em>24 x 0.5 = 12 </em>

<em> </em>

<em>Triangle = 12 </em>

<em> </em>

<em>Rectangle: </em>

<em> </em>

<em>16 x 8 </em>

<em> </em>

<em>= 128 </em>

<em> </em>

<em>Rectangle = 128 </em>

<em> </em>

<em>Total figure: </em>

<em> </em>

<em>128+12 </em>

<em> </em>

<em>= 140 </em>

<u><em>Plzz give me brainlist!!!</em></u><u> </u>

8 0
3 years ago
If the length of side a is 12 centimeters, measure of angle B = 36 degrees and measure of angle C = 75 degrees , what is the len
Fofino [41]
The length of side b is 7.61 m.

Here's how the length was calculated:

Let:

length of side a = 12 centimeters
B = 36 degrees
C = 75 degrees

In order to solve an AAS triangle, use the three angles, add to 180 degrees to find the other angle, then, use The Law of Sines to find each of the other two sides.

A = 180 - (36 + 75) = 69 degrees

by using the law of sines:

a / sin A = b / sin B = c/ sin C

we will substitute the given values:

12 / sin (69) = b / sin (36)

b = unknown

12 / 0.93 = b / 0.59

12.9 = b / 0.59

b = 12.9 * 0.59

b =7.61 cm (length of side b)
6 0
3 years ago
A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per
ValentinkaMS [17]

Answer:

3lbs

Step-by-step explanation:

8 0
3 years ago
Six times a number plus 4 is same as the number minus 11 only equation
algol13

y=4x-11 is the correct equation

3 0
3 years ago
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