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Zolol [24]
2 years ago
12

A colony of 100 bacteria doubles in size every 60 hours. What will the population be 180 hours from now?

Mathematics
1 answer:
yulyashka [42]2 years ago
4 0

Answer:

600

Step-by-step explanation: 100\times2\times\frac{180}{60}

<u><em>Cross out the common factor</em></u>

<u><em /></u>100\times2\times3

<u><em>Calculate the product or quotient</em></u>

<u><em /></u>200\times3
600\ YOUR\ ANSWER\ which\ can\ also\ be\ written\ as\ 6\times{10}^2\

<em>I hope this helps you</em>

<em>:)</em>

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Among 46​- to 51​-year-olds, 28​% say they have called a talk show while under the influence of peer pressurepeer pressure. Supp
sasho [114]

Answer:

0.8997, 0.9999

Step-by-step explanation:

Given that among 46​- to 51​-year-olds, 28​% say they have called a talk show while under the influence of peer pressure.

i.e. X no of people who say they have called a talk show while under the influence of peer pressure is binomial with p = 0.28

Each person is independent of the other and there are only two outcomes

n =7

a) the probability that at least one has not called a talk showcalled a talk show while under the influence of peer pressure

=P(Y\geq 1) where Y is binomial with p = 0.72

= 1-(1-0.72)^7\\=0.9999

b) the probability that at least one has  called a talk showcalled a talk show while under the influence of peer pressurepeer pressurethe probability that at least one has not called a talk showcalled a talk show while under the influence of peer pressure

=P(x\geq 1) =1-P(0)\\= 1-(1-0.28)^7\\=0.8997

3 0
2 years ago
A recipe for nut bread calls for 1/3 cup of walnuts and 2/6 cup of pecans. What is the total amount of walnuts and pecans needed
tiny-mole [99]

Answer: 2/3 cups

Step-by-step explanation:

6 0
2 years ago
Which ordered pair (c, d) is the solution to the given system of linear equations?
ELEN [110]

Answer:

(-1,6)

Step-by-step explanation:

5 0
2 years ago
If f(x)=1/7-9, then f^-1(x)=
artcher [175]

Answer:

Step-by-step explanation:

Hello!

f(x)=\frac{1}{7} -9=\frac{1-9*7}{7} =-\frac{62}{7} \\=>f^{-1} (x)=-\frac{7}{62}\\

Good luck!

4 0
3 years ago
Which of the following is equal to the rational expression when x doesnt equal 5? x^2 - 25/ x - 5
scoundrel [369]
The complete question in the attached figure

we have that
(x²<span> - 25)/ (x - 5)

we know
</span>(x² - 25)-------------> (Difference of two squares)----------> (x+5)*(x-5)

then

(x² - 25)/ (x - 5)<span>-------> (x+5)*(x-5)/(x-5)------------> (x+5)

the answer is the option B)
(x+5)</span>

4 0
3 years ago
Read 2 more answers
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