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
asambeis [7]
2 years ago
13

helen divides up some money to give to her eight nieces. if d represents the total amount, enter an expression to represent how

much each niece recieves
Mathematics
1 answer:
poizon [28]2 years ago
4 0

          1/8 d = how much each niece receives

Each niece receives(x) amount of money.1/8 of the money)

If you multiply this amount by 8 it will be the money Helen divides up to her 8 nieces   1/8dx8=8/8(the whole amount is 8/8)




You might be interested in
Please help. Here's the question
kakasveta [241]
He goes 1.5k/h. To get that you divide the km by the hour. Then multiply the hour by 1.5 to get the km. (Ex. 2hrs x 1.5km = 3km)
6 0
2 years ago
Help me thanks<br> Xxxxxxxxx
Vilka [71]

Answer:

The answer is C.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the sales tax of a $178.90 video game system is the tax rate is 3.75%
juin [17]
It would be: 178.90 * 3.75%
= 178.90 * 0.0375
= 6.71

In short, Sales tax would be $6.71

Hope this helps!
3 0
3 years ago
Please help needed its due soon
Brums [2.3K]
25yd=75 . sorry mane had to get these points up you know
6 0
2 years ago
Find the general solution to each of the following ODEs. Then, decide whether or not the set of solutions form a vector space. E
Ipatiy [6.2K]

Answer:

(A) y=ke^{2t} with k\in\mathbb{R}.

(B) y=ke^{2t}/2-1/2 with k\in\mathbb{R}

(C) y=k_1e^{2t}+k_2e^{-2t} with k_1,k_2\in\mathbb{R}

(D) y=k_1e^{2t}+k_2e^{-2t}+e^{3t}/5 with k_1,k_2\in\mathbb{R},

Step-by-step explanation

(A) We can see this as separation of variables or just a linear ODE of first grade, then 0=y'-2y=\frac{dy}{dt}-2y\Rightarrow \frac{dy}{dt}=2y \Rightarrow  \frac{1}{2y}dy=dt \ \Rightarrow \int \frac{1}{2y}dy=\int dt \Rightarrow \ln |y|^{1/2}=t+C \Rightarrow |y|^{1/2}=e^{\ln |y|^{1/2}}=e^{t+C}=e^{C}e^t} \Rightarrow y=ke^{2t}. With this answer we see that the set of solutions of the ODE form a vector space over, where vectors are of the form e^{2t} with t real.

(B) Proceeding and the previous item, we obtain 1=y'-2y=\frac{dy}{dt}-2y\Rightarrow \frac{dy}{dt}=2y+1 \Rightarrow  \frac{1}{2y+1}dy=dt \ \Rightarrow \int \frac{1}{2y+1}dy=\int dt \Rightarrow 1/2\ln |2y+1|=t+C \Rightarrow |2y+1|^{1/2}=e^{\ln |2y+1|^{1/2}}=e^{t+C}=e^{C}e^t \Rightarrow y=ke^{2t}/2-1/2. Which is not a vector space with the usual operations (this is because -1/2), in other words, if you sum two solutions you don't obtain a solution.

(C) This is a linear ODE of second grade, then if we set y=e^{mt} \Rightarrow y''=m^2e^{mt} and we obtain the characteristic equation 0=y''-4y=m^2e^{mt}-4e^{mt}=(m^2-4)e^{mt}\Rightarrow m^{2}-4=0\Rightarrow m=\pm 2 and then the general solution is y=k_1e^{2t}+k_2e^{-2t} with k_1,k_2\in\mathbb{R}, and as in the first items the set of solutions form a vector space.

(D) Using C, let be y=me^{3t} we obtain that it must satisfies 3^2m-4m=1\Rightarrow m=1/5 and then the general solution is y=k_1e^{2t}+k_2e^{-2t}+e^{3t}/5 with k_1,k_2\in\mathbb{R}, and as in (B) the set of solutions does not form a vector space (same reason! as in (B)).  

4 0
3 years ago
Other questions:
  • Find the ratio a:b, if 2a−b/6 = b/3
    5·1 answer
  • the sum of 2 numbers is 7 the larger number is 16 more than 2 times the smaller number what are the numbers
    9·2 answers
  • What’s the multiple of 9 that adds to 18
    5·2 answers
  • How much is 24 ounces turned into pounds
    6·2 answers
  • Are the triangles shown below similar? Please explain why or why not.
    11·2 answers
  • (27x^4-18x^3+9x^2) divided by 3x
    12·2 answers
  • Morgan is going to a carnival that has games and rides. Each game costs $2.50 and each ride costs $4.25. How much would Morgan h
    8·2 answers
  • Please help me with this questions please please ASAP ASAP please ASAP help please please ASAP please I'm begging you please ple
    10·2 answers
  • Let f(x) =x+5 and g(x)=x^2-3 then f(g(x)) =?
    6·1 answer
  • Given the diameter of a circle is 17 1/2cm, find its area. (use π=22/7)​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!