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Lubov Fominskaja [6]
3 years ago
14

Help math beats me up in dark alleys

Mathematics
1 answer:
andriy [413]3 years ago
3 0

Replace x with 3:

f(x) = 20(0.5)^x

f(3) = 20(0.5)^3

First do 0.5^3 = 0.125

Now multiply that by 20:

20 x 0.125 = 2.5


f(3) = 2.5

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A certain company's main source of income is selling cloth bracelets. The company's annual profit (in thousands of dollars) as a
tester [92]

Answer:

8 thousand dollars

Step-by-step explanation:

The company's annual profit (in thousands of dollars) as a function of the price of a bracelet (in dollars) is modeled by: P(x)=-2x^2+16x-24

To find maximum profit , we need to find out the vertex

x coordinate of vertex formula is -b/2a

P(x)=-2x^2+16x-24

a=-2  and b = 16

x= \frac{-b}{2a}= \frac{-16}{2(-2)} = 4

Now we plug in 4 for x  and find out P(4)

P(x)=-2(4)^2+16(4)-24= 8

So the maximum profit the company can earn is 8 thousand dollars when price = $4


6 0
3 years ago
Read 2 more answers
The answer has to be a simplified fraction ?
Vedmedyk [2.9K]

Answer:

-\frac{27}{35}

Step-by-step explanation:

Multiply \frac{3}{7} (-\frac{9}{5}).

8 0
3 years ago
I need the answer and if you would please explain step by step
emmasim [6.3K]

Answer:

x=17

Step-by-step explanation:

well the triangles are congruent so that equation has to equal 61, so set it equal to 61, once you do that subtract 10 with 61 giving you 51, then divide 3 with 51 and you get 17

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3 0
3 years ago
Sarah's hair appointment is 30 miles away. How fast must she travel to get there in 60 minutes?
Fudgin [204]

Answer:

30 miles an hour

Step-by-step explanation:

6 0
3 years ago
A computer can sort x objects in t seconds, as modeled by the function
r-ruslan [8.4K]

Answer:

  36 objects

Step-by-step explanation:

You want the value of x when t=9, so you're solving ...

  9 = 0.007x^2 +0.003x

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From here, we observe that an approximation is probably sufficient.

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  x ≈ 3/√.007 ≈ 35.9 ≈ 36

We can check:

  .007(36)(36 3/7) = 9.18

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To keep the computer busy for 9 seconds, it needs to sort 36 objects.

 

6 0
3 years ago
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