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Snezhnost [94]
2 years ago
12

Sarah bought a bike that cost $260. She had a

Mathematics
1 answer:
poizon [28]2 years ago
6 0
Hope this helps it shows the work meaning she paid $205

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The profit that a vendor makes per day by selling x elephant ears is given by the function P(x)= -0.004x^2+3.2x-200. Find the nu
dezoksy [38]

Answer:

The number of elephant ears that must be sold to maximize profit is 400.

Step-by-step explanation:

Given that,

The profit that a vendor makes per day is given by

P(x)= - 0.004x² +3.2 x -200

where x is number of elephant ears.

P(x)= - 0.004x² +3.2 x -200

Differentiating with respect to x

P'(x)= - 0.008x+3.2

Again differentiating with respect to x

P''(x) = -0.008

For maximum or minimum P'(x)=0

- 0.008x+3.2=0

⇒0.008x=3.2

\Rightarrow x=\frac{3.2}{0.008}

⇒ x = 400

P''(x)|_{x=400} = -0.008

Since at x=400, P''(x)<0, the profit is maximize.

P(400) = -0.004×400²+3.2×400-200

          =440

The number of elephant ears that must be sold to maximize profit is 400.

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3 years ago
Solve for x. The polygons are similar
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\frac{8x-2}{42}=\frac{63}{49}\\\frac{8x-2}{42}=\frac{9}{7}\\7(8x-2)=9\cdot42\ /:7\\8x-2=9\cdot6\\8x-2=54\\8x=54+2\\8x=56\ /:8\\x=7

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A factory makes TV's and video machines. Checking for faults regularly, on average, 5 out of every 300 TV's are faulty and 8 out
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A. 1 out of 60 for the tv, 1 out of 25 for the video. This comes to 2/85 that one is faulty. B. 286, since 285 has exactly a .95 chance
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What is 25%of395 thanks
tia_tia [17]
98.75
Just do 0.25 (25%) times 395
its the same as doing 395 divided by 25

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Inessa05 [86]

Answer:

slope: -2/3   y intercept: (0,5)

Step-by-step explanation:

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2 years ago
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