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Jobisdone [24]
4 years ago
14

Please help ?????????????

Mathematics
1 answer:
vekshin14 years ago
6 0

Answer:

32000

Step-by-step explanation:

Sales does not pay that good

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CAN SOMEONE HELP ME ASAP!!!<3
Ray Of Light [21]

Answer:

Step-by-step explanation:

11.

f(-8) = (-3/2)(-8) +11 = (24/2) +11 = 12+11 = 23

12.

g(-2) substitute x by -2 in the g( x) equation

9(-2) = (-2)²-7(-2) = 4 +14 = 18

13.

h(2/3) = | 15 -9(2/3)| = | 15 -(18/3)| = | 15 -6 | = |9| = 9

12.

the zero is at x= -2 because is the intersection of the graph with the x-axis

13.

the zero are at x=1, x= -2, x= -4 because is the intersection of the graph with the x-axis

3 0
3 years ago
A common inhabitant of human intestines is the bacterium Escherichia coli. A cell of this bacterium in a nutrient-broth medium d
nikitadnepr [17]

Answer:

a) k=2.08 1/hour

b) The exponential growth model can be written as:

P(t)=Ce^{kt}

c) 977,435,644 cells

d) 2.033 billions cells per hour.

e) 2.81 hours.

Step-by-step explanation:

We have a model of exponential growth.

We know that the population duplicates every 20 minutes (t=0.33).

The initial population is P(t=0)=58.

The exponential growth model can be written as:

P(t)=Ce^{kt}

For t=0, we have:

P(0)=Ce^0=C=58

If we use the duplication time, we have:

P(t+0.33)=2P(t)\\\\58e^{k(t+0.33)}=2\cdot58e^{kt}\\\\e^{0.33k}=2\\\\0.33k=ln(2)\\\\k=ln(2)/0.33=2.08

Then, we have the model as:

P(t)=58e^{2.08t}

The relative growth rate (RGR) is defined, if P is the population and t the time, as:

RGR=\dfrac{1}{P}\dfrac{dP}{dt}=k

In this case, the RGR is k=2.08 1/h.

After 8 hours, we will have:

P(8)=58e^{2.08\cdot8}=58e^{16.64}=58\cdot 16,852,338= 977,435,644

The rate of growth can be calculated as dP/dt and is:

dP/dt=58[2.08\cdot e^{2.08t}]=120.64e^2.08t=2.08P(t)

For t=8, the rate of growth is:

dP/dt(8)=2.08P(8)=2.08\cdot 977,435,644 = 2,033,066,140

(2.033 billions cells per hour).

We can calculate when the population will reach 20,000 cells as:

P(t)=20,000\\\\58e^{2.08t}=20,000\\\\e^{2.08t}=20,000/58\approx344.827\\\\2.08t=ln(344.827)\approx5.843\\\\t=5.843/2.08\approx2.81

3 0
3 years ago
What is equivalent to 11 - ( 3 5/8
Bad White [126]
So...
3 5/8 in decimal 3.625
11 - 3.625 = 8.375
8 0
3 years ago
Given that m = -5/2 for a line that passes through point (-3,-5), write an
denis-greek [22]

Answer:

y=

-5/2x

-25/2

Honestly I don't know if this is right so sorry if its wrong.

(it wouldn't let me type it normally)

6 0
3 years ago
Change to hundredths .5
damaskus [11]

Answer:

Step-by-step explanation:

.5=5/10

(5/10)(10/10)

50/100, or as decimal 0.50

6 0
3 years ago
Read 2 more answers
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