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olasank [31]
3 years ago
5

The population of a certain city was 25000 in 2010 and decreased by 4% each year afterword. The population can be modeled by an

exponential function of the form y= ab^x where x represents the number of years since 2010. What are the values of a and b?
Mathematics
1 answer:
meriva3 years ago
3 0
a= initial value, 25000. b = rate of decay, (1-.04) or (.96)
a represents the initial value in exponential functions and b represents the rate of growth or decay. for decay subtract the 4% from 1 or 1-.04.
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yawa3891 [41]

Answer:

0.9973

Step-by-step explanation:

Given :

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1 - p = 0.481

n = 9

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Usingbthe binomial probability distribution :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

USing the binomial probability calculator :

p(x ≥ 1) = p(x=1) + p(x=2) + p(x=3) + p(x=4) + p(x=5) + p(x=6) + p(x=7) + p(x=8) + p(x=9)

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4 0
3 years ago
a number is divided by 3 and the result is added to 1. the new result is doubled to give the final result 80. whats the number
Gnesinka [82]
78, because you have to do the inverse operation so 80/2= 40 then 40-1= 39 and 39*3 = 78
6 0
3 years ago
Rita has already prepared 3 kilograms of dough and will continue preparing 1 kilogram of dough every hour. How much dough did Ri
Digiron [165]

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12

Step-by-step explanation:

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6 0
3 years ago
Please answer this correctly without making mistakes.I want ace expert and genius people to answer this correctly without making
aniked [119]

Answer:

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Step-by-step explanation:

That's the answer

4 0
2 years ago
Read 2 more answers
Help please tell me what the answer is ASAP
Amiraneli [1.4K]

Answer:

The approximated length of EF is 2.2 units ⇒ A

Step-by-step explanation:

<em>The tangent ratio in the right triangle is the ratio between the opposite side to the adjacent side of one of the acute angle in the triangle</em>

In the given figure

∵ The triangle DFE has a right angle F

∵ The opposite side to angle D is EF

∵ The adjacent side to angle D is DF

→ By using the tangent ratio above

∴ tan(∠D) = \frac{EF}{DF}

∵ DF = 6 units

∵ m∠D = 20°

→ Substitute then in the ratio above

∴ tan(20°) = \frac{EF}{6}

→ Multiply both sides by 6

∴ 6 tan(20°) = EF

∴ 2.183821406 = EF

→ Approximate it to the nearest tenth

∴ 2.2 = EF

∴ The approximated length of EF is 2.2 units

7 0
3 years ago
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