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
Ivanshal [37]
3 years ago
13

What is the second step to solving this equation? 9x - 23 = 49

Mathematics
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

Divide 9 from both sides.

Step-by-step explanation:

The first step to solving this equation is to add 23 to both sides.

9x - 23 (+23) = 49 (+23)

9x = 49 + 23

9x = 72

The second step is to isolate the x and divide 9 from both sides:

(9x)/9 = (72)/9

x = 72/9

x = 8

~

You might be interested in
in one month you had both a raise and a $250 bonus for exceeding your goals by 10%. your old paycheck gross was 2300 with a net
maks197457 [2]
Backing out the bonus, we get 2711 - 250 = 2461, which is 161 more than his last check 

<span>So 161 / 2300 = 0.07, or 7%</span>
3 0
3 years ago
3. WHAT IS THE END BEHAVIOR?SHOW WORK.<br><br> - 10x -x+ 2
nekit [7.7K]

Answer:

Step-by-step explanatio

−10x−x+2

=−10x+−x+2

=−10x+−x+2

=(−10x+−x)+(2)

=−11x+2

Answer:

=−11x+2

 

3 0
3 years ago
What is 9 simplified​
grin007 [14]

Answer:

9 on its own can not be simplified. It needs to be a fraction.

7 0
3 years ago
Apply the method of undetermined coefficients to find a particular solution to the following system.wing system.
jarptica [38.1K]
  • y''-y'+y=\sin x

The corresponding homogeneous ODE has characteristic equation r^2-r+1=0 with roots at r=\dfrac{1\pm\sqrt3}2, thus admitting the characteristic solution

y_c=C_1e^x\cos\dfrac{\sqrt3}2x+C_2e^x\sin\dfrac{\sqrt3}2x

For the particular solution, assume one of the form

y_p=a\sin x+b\cos x

{y_p}'=a\cos x-b\sin x

{y_p}''=-a\sin x-b\cos x

Substituting into the ODE gives

(-a\sin x-b\cos x)-(a\cos x-b\sin x)+(a\sin x+b\cos x)=\sin x

-b\cos x+a\sin x=\sin x

\implies a=1,b=0

Then the general solution to this ODE is

\boxed{y(x)=C_1e^x\cos\dfrac{\sqrt3}2x+C_2e^x\sin\dfrac{\sqrt3}2x+\sin x}

  • y''-3y'+2y=e^x\sin x

\implies r^2-3r+2=(r-1)(r-2)=0\implies r=1,r=2

\implies y_c=C_1e^x+C_2e^{2x}

Assume a solution of the form

y_p=e^x(a\sin x+b\cos x)

{y_p}'=e^x((a+b)\cos x+(a-b)\sin x)

{y_p}''=2e^x(a\cos x-b\sin x)

Substituting into the ODE gives

2e^x(a\cos x-b\sin x)-3e^x((a+b)\cos x+(a-b)\sin x)+2e^x(a\sin x+b\cos x)=e^x\sin x

-e^x((a+b)\cos x+(a-b)\sin x)=e^x\sin x

\implies\begin{cases}-a-b=0\\-a+b=1\end{cases}\implies a=-\dfrac12,b=\dfrac12

so the solution is

\boxed{y(x)=C_1e^x+C_2e^{2x}-\dfrac{e^x}2(\sin x-\cos x)}

  • y''+y=x\cos(2x)

r^2+1=0\implies r=\pm i

\implies y_c=C_1\cos x+C_2\sin x

Assume a solution of the form

y_p=(ax+b)\cos(2x)+(cx+d)\sin(2x)

{y_p}''=-4(ax+b-c)\cos(2x)-4(cx+a+d)\sin(2x)

Substituting into the ODE gives

(-4(ax+b-c)\cos(2x)-4(cx+a+d)\sin(2x))+((ax+b)\cos(2x)+(cx+d)\sin(2x))=x\cos(2x)

-(3ax+3b-4c)\cos(2x)-(3cx+3d+4a)\sin(2x)=x\cos(2x)

\implies\begin{cases}-3a=1\\-3b+4c=0\\-3c=0\\-4a-3d=0\end{cases}\implies a=-\dfrac13,b=c=0,d=\dfrac49

so the solution is

\boxed{y(x)=C_1\cos x+C_2\sin x-\dfrac13x\cos(2x)+\dfrac49\sin(2x)}

7 0
3 years ago
Please answer question 11
storchak [24]

Answer:

48 + 48 solve it and that is your answer

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write the equation of a line in slope intercept form if the slope is 9 and a Y intercept is 13
    9·1 answer
  • Find the value of x if a triangle measures 65, x, x-5
    11·1 answer
  • Help on all pls i need it quick
    14·1 answer
  • Two distinct coplanar lines that do not intersect are known as ____ lines.
    14·2 answers
  • What is the equation of the line perpendicular to –x + y = 7 and passing through (-1, -1)?
    15·1 answer
  • Complete the steps to evaluate the following expression, given log3a = −0.631.
    9·2 answers
  • To move a function, you need to _____ it.
    5·1 answer
  • Please help and explain :)
    9·1 answer
  • $10.50 for 3 pounds round to the nearest hundredth can u solve the other pens too .
    9·1 answer
  • Find the value of x and the length of each diagonal <br> x=<br> LN=<br> MP=
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!