1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena-s [515]
3 years ago
6

You want to buy 4 pens, each costing 27 cents. How many dollar bills should you take to the store? im not in college btw lol

Mathematics
1 answer:
USPshnik [31]3 years ago
5 0

Answer:

108c so 2 dollar bills.

Step-by-step explanation:

You might be interested in
A line passes through (-6, 10) and (4, -10). What is the slope?
FromTheMoon [43]
M= -2 , hope this help you <3
6 0
3 years ago
During optimal conditions, the rate of change of the population of a certain organism is proportional to the population at time
Lana71 [14]

Answer:

The population is of 500 after 10.22 hours.

Step-by-step explanation:

The rate of change of the population of a certain organism is proportional to the population at time t, in hours.

This means that the population can be modeled by the following differential equation:

\frac{dP}{dt} = Pr

In which r is the growth rate.

Solving by separation of variables, then integrating both sides, we have that:

\frac{dP}{P} = r dt

\int \frac{dP}{P} = \int r dt

\ln{P} = rt + K

Applying the exponential to both sides:

P(t) = Ke^{rt}

In which K is the initial population.

At time t = 0 hours, the population is 300.

This means that K = 300. So

P(t) = 300e^{rt}

At time t = 24 hours, the population is 1000.

This means that P(24) = 1000. We use this to find the growth rate. So

P(t) = 300e^{rt}

1000 = 300e^{24r}

e^{24r} = \frac{1000}{300}

e^{24r} = \frac{10}{3}

\ln{e^{24r}} = \ln{\frac{10}{3}}

24r = \ln{\frac{10}{3}}

r = \frac{\ln{\frac{10}{3}}}{24}

r = 0.05

So

P(t) = 300e^{0.05t}

At what time t is the population 500?

This is t for which P(t) = 500. So

P(t) = 300e^{0.05t}

500 = 300e^{0.05t}

e^{0.05t} = \frac{500}{300}

e^{0.05t} = \frac{5}{3}

\ln{e^{0.05t}} = \ln{\frac{5}{3}}

0.05t = \ln{\frac{5}{3}}

t = \frac{\ln{\frac{5}{3}}}{0.05}

t = 10.22

The population is of 500 after 10.22 hours.

7 0
3 years ago
Can somebody solve this multi-step equation?<br> 4(x-2)=4x
ladessa [460]
Download the aappp called Socratic
3 0
3 years ago
What is <br> 5<br> 1<br> 2<br> +<br> 2<br> 1<br> 7<br> ?
alina1380 [7]

Answer:

769

Step-by-step explanation:

512

+217

____

729

hope this helps

the fraction answer is 7 9/14 lol

4 0
2 years ago
Read 2 more answers
What are the intercept(s) of ƒ(x) = x2?
IgorC [24]
There are no intercepts. (o,o)
4 0
3 years ago
Other questions:
  • What are the values of the coefficients and constant term of 0=4-7x^2
    12·1 answer
  • 4.63 rounded to the nearest tenth?
    11·2 answers
  • On Monday, Amie rides her bike from home to school. After school, she bikes to work. After work, she bikes home. Based on the in
    9·2 answers
  • What is 5/7 times 3/4
    12·2 answers
  • Simplify -|-5 + 2|. 10 points! thank you
    11·1 answer
  • Round 47,397 to the nearest ten
    15·2 answers
  • i need help quick!! this is unit 1:geometry basics. homework 5: angle relationships if anyone know tell me
    6·2 answers
  • The data on the right represent the number of traffic fatalities by seat location and gender. consider a victim randomly selecte
    6·1 answer
  • Subtract 23.4 − 8.78 = Haven't been taught how to do this
    8·1 answer
  • “Calculate the lengths of the 2 unlabeled sides” help me pleasee
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!