3 years ago

Graph g(x)=− 51 (x+5) ^2 − 2

Mathematics

1 answer:

jolli1 [7]3 years ago

3 0

Answer:Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Vertex:

(

)

Focus:

(

)

Axis of Symmetry:

Directrix:

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james invested some money at 13% interest. James also invested $199 more than 3 times that amount at 12%. How much is invested a

Komok [63]

9514 1404 393

Answer:

$3138 at 13%
9613 at 12%

Step-by-step explanation:

Let x represent the amount invested at 13%. Then (3x+199) is the amount invested at 12%. The total interest earned in 1 year is ...

(13%)(x) +(12%)(3x+199) = 1561.50

0.49x +23.88 = 1561.50 . . . . simplify

0.49x = 1537.62 . . . . . . . . . . subtract 23.88

x = 3138 . . . . . . . . . . . . . . . . divide by 0.49

3x+199 = 9613

$3138 was invested at 13%; $9613 was invested at 12%.

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These are the ones that you need to choose.

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And electronics store chain sells headphones The company is about to introduce a new headphones model that is expected to sell v

klasskru [66]

Answer:

$P(x) = -0.25x^2 + 42x - 90$

Step-by-step explanation:

Given

$C(x) = -17x + 90$

$R(x) =- 0.25x^2 + 25x$

Required

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Profit function is calculated as thus:

$P(x) = R(x) - C(x)$

So, we have:

$P(x) = -0.25x^2 + 25x -(-17x + 90)$

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3 years ago