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RSB [31]
3 years ago
8

Given the function, f(x) = - 5x – 3, what is the value of x when f(x) = - 18?

Mathematics
1 answer:
Paraphin [41]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Set up your equation -> -5x - 3 = -18

Add 3 to both sides -> -5x = -15

Divide both sides by -5 -> x= 3

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The kitchen-tile installer has 20 green, 14 beige, and 16 white tiles in a box. What is the probability of picking a beige tile
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Answer: P = 0.28

Step-by-step explanation:

If we pick it at random, the probability of selecting each tile must be equal. this means that the probability of picking a tile of a giving color is equal to the number of the tiles of that color divided the total number of tiles.

We have 14 beige tiles and 20 + 14 + 16 = 50 tiles in total.

Then the probability of piking a beige tile is:

P = 14/50 = 0.28

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puteri [66]
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3 years ago
The population p (in millions) of Italy from 1990 through 2008 can be approximated by the model p=56.8e^o.oo15t , where t repres
dimulka [17.4K]

As we already have the model that describes the change of the population in Italy in terms of the years that have elapsed, we only have to replace the conditions that are requested in that equation.

Therefore to find the population of Italy in the year 2000 (t = 10 years)  substitute t = 10 in the equation and have:

p = 56.8e^{0.0015*10}\\

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To find the population of Italy in 2008 (t = 18 years)

substitute t = 18 in the equation and have:

p=56.8e ^{0.0015*18}\\

p=58.3545 million people


To predict the population in Italy for 2015 and 2020 with this model, we substitute in the equation t = 25 and t = 30

t = 25

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p=56.8e^{0.0015*30}

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8 0
3 years ago
Find the perimeter of the polygon.
Semmy [17]

9514 1404 393

Answer:

  30 in

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  28 +2 = 30 . . . inches

5 0
2 years ago
Read 2 more answers
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