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maksim [4K]
2 years ago
9

BROO HELP ME PLEASE I DONT UNDERSTAND AND IM STRESSING OUT IT WOULD MEAN ALOT THANK YOUUUU

Mathematics
1 answer:
Tema [17]2 years ago
5 0

Answer: 1a. $190

b. The total cost of making 20 bracelets.

c. $350

d. The total cost of making 100 bracelets.

e. $1150

f. The total cost of making 500 bracelets.

g. 150 bracelets

h. 425 bracelets

Step-by-step explanation:

1a. C(20)=150+2(20)

    C(20)=150+40

    C(20)=$190

b. The total cost of making 20 bracelets.

c. C(100)=150+2(100)

   C(100)=150+200

   C(100)=$350

d. The total cost of making 100 bracelets.

e. C(500)=150+2(500)

   C(500)=150+1000

   C(500)=$1150

f. The total cost of making 500 bracelets.

g. 450=150+2b

   2b=300

     b=150 bracelets

h. 1000=150+2b

   2b=850

     b=425 bracelets

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-1.9 = x/.5  given equation

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.5(-1.9) = x/(.5) *(.5)

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check: -1.9 = -.95/ .5


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3 years ago
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lesya [120]
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= 4x + 6x - 9y + 8y + 10 - 4
= 10x - y + 6
—> D

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23. (9x^2-8x+3) - (5x^2-6x+4)
= 9x^2 - 8x + 3 - 5x^2 -(-6x) - 4
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= 4x^2 - 2x - 1
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5 0
2 years ago
When the solutions are going to be complex, which methods can be used to solve quadratic equations?
yKpoI14uk [10]
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You could use the quadratic equation to find the roots (which are complex). 

Try an example that will require both.

y = x^2 + 2x + 5

Step One
Get the graph. That's included below.

Step Two
Provide the steps for completing the square.
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Step Three
Find the roots. Use the quadratic equation. Note that the graph shows us that the equation never crosses or touches the x axis. The roots are complex.

\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a}

a = 1
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\text{x = }\dfrac{ -2 \pm \sqrt{2^{2} - 4*1*5 } }{2}
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x = -1 +/- 2i

x1 = -1 + 2i
x2 = -1 - 2i And we are done.


7 0
3 years ago
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