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frozen [14]
2 years ago
7

Juanita has saved 30% of the money that she needs to buy a new bicycle.

Mathematics
2 answers:
Jobisdone [24]2 years ago
6 0
It will cost her $120
Nostrana [21]2 years ago
4 0
The Bicycle cost $120
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Need help on this problem
faust18 [17]

Using an exponential function, it is found that:

  • For Country A, the doubling time is of 43 years.
  • For Country B, the growth rate is of 1.9% per year.

<h3>What is the exponential function for population growth?</h3>

The exponential function for population growth is given as follows:

P(t) = P(0)e^{kt}

In which:

  • P(t) is the population after t years.
  • P(0) is the initial population.
  • k is the exponential growth rate, as a decimal.
  • t is the time in years.

For Country A, we have that k = 0.016. The doubling time is t for which P(t) = 2P(0), hence:

P(t) = P(0)e^{kt}

2P(0) = P(0)e^{0.016t}

e^{0.016t} = 2

\ln{e^{0.016t}} = \ln{2}

0.016t = \ln{2}

t = \frac{\ln{2}}{0.016}

t = 43 years.

For Country B, P(36) = 2P(0), hence we have to solve for k to find the growth rate.

P(t) = P(0)e^{kt}

2P(0) = P(0)e^{36k}

e^{36k} = 2

\ln{e^{36k}} = \ln{2}

36k = \ln{2}

k = \frac{\ln{2}}{36}

k = 0.019.

For Country B, the growth rate is of 1.9% per year.

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

3 0
1 year ago
Pls help math problem pls
Dovator [93]

Answer: The fourth choice

Step-by-step explanation:

(f - g)(x) = f(x) - g(x) = 4x^{2} - 5x - (3x^{2} + 6x - 4) = x^{2} - 11x + 4

5 0
2 years ago
There are 5 kids who want to start a game of Red Rover. Then 12 more kids come to play. If there are 2 teams in Red Rover, which
mixas84 [53]

Answer: The answer is one will have 8 and one will have 9 so roughly 8

Step-by-step explanation

So to start we need to add all the kids together that are playing

5+12= 17

Now we need to divide the number of kids by the number of teams that there are

17 divided by 2=8.5

So each team will have 8 but one will have nine

Hope this helps :D

7 0
2 years ago
Read 2 more answers
What is the intersection of the following sets? G = {3, 7, 8, 9} H = {2, 5, 7, 8}
weeeeeb [17]

"The intersection (∩) of a pair of sets (G and H) is a third set (I) composed by the elements that belong, at the same time, to both given sets."

According to this definition:

Given the sets:

G = {3, 7, 8, 9}

H = {2, 5, 7, 8}

The Intersection is:

G ∩ H = I = {7, 8}

:-)

5 0
2 years ago
Read 2 more answers
A fraction f, multiplied by 5
prohojiy [21]

Answer:

f=1/40

Step-by-step explanation:

5f=1/8

f=(1/8)/5

f=(1/8)(1/5)

f=1/40

5 0
3 years ago
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