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
Allushta [10]
3 years ago
10

What does n equal? 2=-9n+22-n

Mathematics
2 answers:
velikii [3]3 years ago
5 0

Answer:

n =2

Step-by-step explanation:

2=-9n+22-n

2 = -10n +22

-20 = -10n

n = 2

MrRissso [65]3 years ago
3 0

Step-by-step explanation:

Grouping like terms

9n+n=22-2

10n=20

Dividing through by 10

n=2

You might be interested in
A square rotated about its center by 360º maps onto itself at different angles of rotation. You can reflect a square onto itself
harkovskaia [24]

A square rotated about its center by 360º maps onto itself at 4 different angles of rotation. You can reflect a square onto itself across 4 different lines of reflection.

8 0
3 years ago
Read 2 more answers
Elizabeth continued to save for her car down payment.
Reil [10]

ummmm it could be third one i guesss

6 0
3 years ago
Read 2 more answers
Question 5 Now take a look at the angle measurements of AABC and AA'B'C'. Move the slider, and observe the values of the angle m
jeka57 [31]

Answer:

Step-by-step explanation:

7 0
3 years ago
Solve y'' + 10y' + 25y = 0, y(0) = -2, y'(0) = 11 y(t) = Preview
svetlana [45]

Answer:  The required solution is

y=(-2+t)e^{-5t}.

Step-by-step explanation:   We are given to solve the following differential equation :

y^{\prime\prime}+10y^\prime+25y=0,~~~~~~~y(0)=-2,~~y^\prime(0)=11~~~~~~~~~~~~~~~~~~~~~~~~(i)

Let us consider that

y=e^{mt} be an auxiliary solution of equation (i).

Then, we have

y^prime=me^{mt},~~~~~y^{\prime\prime}=m^2e^{mt}.

Substituting these values in equation (i), we get

m^2e^{mt}+10me^{mt}+25e^{mt}=0\\\\\Rightarrow (m^2+10y+25)e^{mt}=0\\\\\Rightarrow m^2+10m+25=0~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[\textup{since }e^{mt}\neq0]\\\\\Rightarrow m^2+2\times m\times5+5^2=0\\\\\Rightarrow (m+5)^2=0\\\\\Rightarrow m=-5,-5.

So, the general solution of the given equation is

y(t)=(A+Bt)e^{-5t}.

Differentiating with respect to t, we get

y^\prime(t)=-5e^{-5t}(A+Bt)+Be^{-5t}.

According to the given conditions, we have

y(0)=-2\\\\\Rightarrow A=-2

and

y^\prime(0)=11\\\\\Rightarrow -5(A+B\times0)+B=11\\\\\Rightarrow -5A+B=11\\\\\Rightarrow (-5)\times(-2)+B=11\\\\\Rightarrow 10+B=11\\\\\Rightarrow B=11-10\\\\\Rightarrow B=1.

Thus, the required solution is

y(t)=(-2+1\times t)e^{-5t}\\\\\Rightarrow y(t)=(-2+t)e^{-5t}.

6 0
3 years ago
If we reject the null hypothesis in a test using analysis of variance, we are concluding that
Bond [772]
You would be concluding that <span>the populations from which our samples come are different. I hope this helps.</span>
7 0
3 years ago
Other questions:
  • High school students across the nation compete in a financial capability challenge each year by taking a National Financial Capa
    12·1 answer
  • Find the perimeter of the figure to the nearest hundredth.
    12·2 answers
  • PLS HELP ASAP 1st answer will be brainliest, make sure your correct
    13·1 answer
  • Which of the following is a third root of the given complex number? 27(cos(pi/5)+isin(pi/5))
    11·1 answer
  • If we are testing for the difference between the means of 2 independent populations presuming equal variances with samples of n1
    14·1 answer
  • Can anyone help me with this question ?
    7·1 answer
  • A watch was on sale for 70% off. The sale price is $60. What was the original price?
    9·1 answer
  • I still need the area I provided my answer for perimeter if you need help! pls help me if u do I will give u brainliest
    9·1 answer
  • Past experience indicates that the time required for high school seniors to complete a standardized test is a normal random vari
    6·1 answer
  • Suatu jenis bakteri, setiap detik akan membelah diri menjadi dua, jika pada saat permulaan ada 5 bakteri, berapakah jumlah bakte
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!