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3 years ago

Find inverse of f(x)=x^3-9Not sure of my answer!

1 answer:

7 0

as you may already know, to get the inverse of any expression, we start off by doing a quick switcheroo on the variables, and then solve for "y".

$\bf \stackrel{f(x)}{y}=x^3-9\implies \stackrel{\textit{quick switcheroo}}{\underline{x}=\underline{y}^3-9}\implies x+9=y^3\implies \sqrt[3]{x+9}=\stackrel{f^{-1}(x)}{y}$

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A Petri dish is growing bacteria. It starts with 3 cells on day 1, 9 cells on day 2, and continues tripling the number of cells

n200080 [17]

Answer:

243

Step-by-step explanation:

Given that:

Day 1 = 3

Day 2 = 9

After the 2nd day, number of cells continue to triple ;

Day 3 = 9^3

P(t) = 9 * 3^3

P(t) = 9 * 27

= 243

3 0

3 years ago

HELP ASAP I DONT GET IT ITS DUE IN 14 MINS

Oksanka [162]

Answer:

110.5 i think D

Step-by-step explanation:

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65 + 45.5 = 110.5

---

7 x 6.5

45.5

7 0

3 years ago

Read 2 more answers

If gk=30 what are gh and jk?

Citrus2011 [14]

Not enough information is given

6 0

3 years ago

Read 2 more answers

Point h is between g and i. If gh = 2x2 + 7x, hi = 9x – 2, and gi = 38, find the length of gh, hi and the possible values of x.

yuradex [85]

2x²+7x+9x-2=38
2x²+16x-40=0
2(x²+8x-20)=0
2(x+10)(x-2)=0
x=-10 or x=2
if we let x=-10 we get negative lengths for some of the segments which is not allowed so discard it. for x=2,

gh=22, hi=16, and gi=38

4 0

3 years ago

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0 and 55.

ra1l [238]

Answer:

0.025

Step-by-step explanation:

Hello!

Given that the classes are uniformly distributed between 45.0 and 55.0 minutes, the propability distribution will be:

$P(x)=\frac{1}{55-45} = \frac{1}{10}$

Now, we are looking for a probability P(51.5<x<51.75) which can be computed as:

$P(51.5$

Therefore:

P(51.5<x<51.75) = 0.025

P(51.5<x<51.75) = 2.5%

<em><u>I strongly believe that the answer for both questions have the same answer, I believe this because there is no additional info for a given class or selecting a class. I think both probabilities are the same.</u></em>

7 0

3 years ago

Find inverse of f(x)=x^3-9Not sure of my answer!​

Find inverse of f(x)=x^3-9Not sure of my answer!