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Katena32 [7]
3 years ago
11

7p +11 - 31 stuck at this one​

Mathematics
1 answer:
Amanda [17]3 years ago
8 0

Answer:

7p -20

Step-by-step explanation:

7p +11 - 31

Combine like terms

7p -20

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If a bacteria population starts with 100 bacteria and doubles every three hours, then the number of bacteria after t hours is n
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Answer:

f^{-1}=3ln_2(\frac{t}{100})

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Step-by-step explanation:

f(t) = 100 \cdot  2^\frac{t}{3}

To find inverse of a function , replace f(t) with y

y= 100 \cdot  2^\frac{t}{3}

replace t with y and y with x

x= 100 \cdot  2^\frac{y}{3}

solve for y

divide both sides by 100

\frac{x}{100} =2^\frac{y}{3}

take ln on both sides

ln \frac{x}{100} =\frac{y}{3}ln 2

divide both sides by ln

ln_2(\frac{x}{100}) =\frac{y}{3}

multiply by 3 on both sides

y=3ln_2(\frac{x}{100})

Replace x with t  and y with f^-1

f^{-1}=3ln_2(\frac{t}{100})

f^-1 represents the number of hours the bacteria developed

7 0
3 years ago
In Ryan's kitchen, there are 15 black tiles and 10 white tiles. What is the ratio (in the simplest form) of white tiles to black
zheka24 [161]

Answer: 10:15 Simplified: 2:3

Step-by-step explanation:

4 0
3 years ago
Rewrite the equation 5x - 2y = 4 so it is in the form y = mx + b
muminat
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8 0
3 years ago
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What is the probability of randomly selecting a month pf year and not getting a month that ends in y?
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Answer:

2/3

Step-by-step explanation:

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Thus, the probability of selecting a month whose name does NOT end in 'y' is 8/12, or 2/3.  Note that this event is the 'complement' of the first event:  

P(name does not end in 'y') = 1 - P(name does not end in 'y') = 1 - 1/3 = 2/3

8 0
2 years ago
I need help. <br> The question is in the picture
Rudik [331]

Answer: In attached

Step-by-step explanation:

Use the given functions to set up and simplify

Attachment has your answer.

I’m not good at typing functions on this app so this image is all I could give.

3 0
3 years ago
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