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
Sonja [21]
3 years ago
7

The rubbing alcohol in hand sanitizer has a half-life of 5 seconds. If there are 36 ounces initially,

Mathematics
1 answer:
vredina [299]3 years ago
4 0

Answer:

about 30 seconds

Step-by-step explanation:

Alcohol sanitizer is good until the alcohol evaporates, about 30 seconds. It is a cleaner, that kills the pathogens already on your hands. If you recontaminate your hands, you need to reapply.

You might be interested in
A circle has a radius of 6 cm. What is its area?
Tems11 [23]

Answer: A=113.1cm

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve the given differential equation by undetermined coefficients. y'' 4y = 7 sin(2x)
kherson [118]

The solution to the given differential equation is yp=−14xcos(2x)

The characteristic equation for this differential equation is:

P(s)=s2+4

The roots of the characteristic equation are:

s=±2i

Therefore, the homogeneous solution is:

yh=c1sin(2x)+c2cos(2x)

Notice that the forcing function has the same angular frequency as the homogeneous solution. In this case, we have resonance. The particular solution will have the form:

yp=Axsin(2x)+Bxcos(2x)

If you take the second derivative of the equation above for  yp , and then substitute that result,  y′′p , along with equation for  yp  above, into the left-hand side of the original differential equation, and then simultaneously solve for the values of A and B that make the left-hand side of the differential equation equal to the forcing function on the right-hand side,  sin(2x) , you will find:

A=0

B=−14

Therefore,

yp=−14xcos(2x)

For more information about differential equation, visit

brainly.com/question/18760518

8 0
2 years ago
Plz help with - symmetry-
DIA [1.3K]

Answer:

1.) The correct answer is A.

2.) The correct answer is C.

3.) The correct answer is B.

4.) The correct answer is A.

5.) The correct answer is B.

Step-by-step explanation:

8 0
3 years ago
A water storage tank is in the shape of a hemisphere​ (half a​ sphere). If the radius is 20 ​ft, approximate the volume of the t
otez555 [7]

Answer:

The approximate volume of the tank is V=16,747\ ft^{3}

Step-by-step explanation:

we know that

The volume of a hemisphere (water storage tank) is equal to

V=\frac{4}{6}\pi r^{3}

we have

r=20\ ft

assume

\pi =3.14

substitute

V=\frac{4}{6}(3.14)(20)^{3}

V=16,747\ ft^{3}

7 0
4 years ago
Can you draw different functions that have the same x-intercepts and the same domain and range?
iogann1982 [59]
I'm pretty sure the answer is no.  A function looks like this: f(x) = mx + c.  Let's add another function, f(y) = ny + d.  If the x-intercept is the same, we can subtract c and d from their respective equations. f(x) = mx, f(y) = ny. If the domains are the same, then x and y can have the same value, so we divide it out. f(x) = m, f(y) = n.  Finally, if the ranges are the same, the value of f(x) = f(y).  So by the substitution property, m=n.  Since all the variables equal each other, both functions are equal to f(x) = mx+c!  Therefore, they can only be the same function.

Answer: No
3 0
3 years ago
Other questions:
  • Answer in mixed numbers if possible
    10·2 answers
  • For Sue’s party, her family rented a bouncy house for $150 plus $2 per child, c.
    10·1 answer
  • the perimeter of the rectangle below is 98 units. Find the length of CD. Write your answer without variables. cd=4x+3 cb=5x+1
    10·2 answers
  • PLEASE HELP ME I WILL GIVE BRAINLIEST TO ANYONE WHO KNOWS THE RIGHT ANSWER.
    12·1 answer
  • What is the largest whole number that will round up or down to 500 if we're rounding to the nearest hundred?
    10·1 answer
  • 60/8+X + 60/8-X = 16
    14·1 answer
  • What are all the ways you can get 48 from multiplying
    7·1 answer
  • Hailey wants to put a skirt around her desk to hide all her computer equipment and cords. She measured her desk, found the dimen
    13·1 answer
  • A grocery store charges $5 for every 3 1/4 pounds of furit. Eleizibeth has 9 3/4 pounds of fruit in her grocery cart. How much w
    12·1 answer
  • Ustrating the fine basic
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!