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
Gennadij [26K]
2 years ago
9

Kenneth has 22 math problems to do for homework. He

Mathematics
1 answer:
grin007 [14]2 years ago
5 0
Kenneth has 10 problems left because 22-12=10
If he does 1 problem every minute it will take him ten minutes
You might be interested in
A drawing contains 5 circles, 8 triangles, and 6 squares. What is the ratio of triangles to circles? Write the ratio using a fra
zavuch27 [327]

Answer:

8:5 or 8/5

Step-by-step explanation:

4 0
2 years ago
Please help.
Luba_88 [7]

Answer:

6.5%

Step-by-step explanation:

The original price of the ticket was 100% of the price of the ticket.

The 15% coupe reduced the price to 85% of the price of the ticket.

The 10% fee on the discounted price adds 10% of 85% to 85%, so it adds 8.5% to 85%. By adding the fee he is at 93.5% of the original price.

100% - 93.5% = 6.5%

The overall percent off compared to the original price was 6.5%.

Answer: 6.5%

4 0
2 years ago
After m
Whitepunk [10]
<span>length of finger nail in m month =10+3m
length of finger nail in 8 months =10+3*8
=10+24 =34mm
 I think thats the answer but im pretty sure thats the answer </span>
4 0
3 years ago
Read 2 more answers
How many times do you need to multiply 271.96 by ten to get 2719.6
ivann1987 [24]
Every 10 you multipy by moves the decimla place to the right by 1 place
so it moves 1 place so therefor you need to multipy it by 10 ONE time
answer is 1 times
7 0
3 years ago
One model for the spread of a virusis that the rate of spread is proportional to the product of the fraction of the population P
Darya [45]

Answer:

The differential equation for the model is

\frac{dP}{dt}=kP(1-P)

The model for P is

P(t)=\frac{1}{1-0.99e^{t/447}}

At half day of the 4th day (t=4.488), the population infected reaches 90,000.

Step-by-step explanation:

We can write the rate of spread of the virus as:

\frac{dP}{dt}=kP(1-P)

We know that P(0)=100 and P(3)=100+200=300.

We have to calculate t so that P(t)=0.9*100,000=90,000.

Solving the diferential equation

\frac{dP}{dt}=kP(1-P)\\\\ \int \frac{dP}{P-P^2} =k\int dt\\\\-ln(1-\frac{1}{P})+C_1=kt\\\\1-\frac{1}{P}=Ce^{-kt}\\\\\frac{1}{P}=1-Ce^{-kt}\\\\P=\frac{1}{1-Ce^{-kt}}

P(0)=  \frac{1}{1-Ce^{-kt}}=\frac{1}{1-C}=100\\\\1-C=0.01\\\\C=0.99\\\\\\P(3)=  \frac{1}{1-0.99e^{-3k}}=300\\\\1-0.99e^{-3k}=\frac{1}{300}=0.99e^{-3k}=1-1/300=0.997\\\\e^{-3k}=0.997/0.99=1.007\\\\-3k=ln(1.007)=0.007\\\\k=-0.007/3=-0.00224=-1/447

Then the model for the population infected at time t is:

P(t)=\frac{1}{1-0.99e^{t/447}}

Now, we can calculate t for P(t)=90,000

P(t)=\frac{1}{1-0.99e^{t/447}}=90,000\\\\1-0.99e^{t/447}=1/90,000 \\\\0.99e^{t/447}=1-1/90,000=0.999988889\\\\e^{t/447}=1.010089787\\\\ t/447=ln(1.010089787)\\\\t=447ln(1.010089787)=447*0.010039225=4.487533

At half day of the 4th day (t=4.488), the population infected reaches 90,000.

8 0
3 years ago
Other questions:
  • Draw a number line and show all numbers that are between 1 and 20 and have exactly 4 factors
    14·1 answer
  • What is the measure of angle 2 in this parallelogram?
    12·1 answer
  • Suppose that c (x )equals 2 x cubed minus 12 x squared plus 23 comma 000 x is the cost of manufacturing x items. Find a producti
    9·1 answer
  • WHAT IS THE SOLUTION TO -3X+10=3X-8
    13·1 answer
  • A percent measures a rate
    10·2 answers
  • The length of a picture frame is 6 inches more than the width . For what values of x is the perimeter of the picture frame great
    11·1 answer
  • 1 point
    6·1 answer
  • Point T is located at (3, -5) on the coordinate plane. Point T is reflected over the x-
    5·2 answers
  • Solve the following problem.<br><br><br> 3/8×3/4=
    8·1 answer
  • Any girls wana hand out their snaps
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!