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
artcher [175]
3 years ago
11

Solve the system of equations. 12x – 5y = -20 y = x +4

Mathematics
2 answers:
Tamiku [17]3 years ago
6 0
The answer should be something like this 7x=0 but if want the whole thing solved it should be x=0
ad-work [718]3 years ago
3 0

Answer:

-6

Step-by-step explanation:

also i think you should use Math-way, it will help with your algebra

You might be interested in
Find the solution r(t)r(t) of the differential equation with the given initial condition: r′(t)=⟨sin9t,sin6t,9t⟩,r(0)=⟨4,6,3⟩
klemol [59]

\mathbf r'(t)=\langle\sin9t,\sin6t,9t\rangle


\mathbf r(t)=\displaystyle\int\mathbf r'(t)\,\mathrm dt


\mathbf r(t)=\left\langle\displaystyle\int\sin9t\,\mathrm dt,\int\sin6t\,\mathrm dt,\int9t\,\mathrm dt\right\rangle


\displaystyle\int\sin9t\,\mathrm dt=\frac19\cos9t+C_1

\displaystyle\int\sin6t\,\mathrm dt=\frac16\cos6t+C_2

\displaystyle\int9t\,\mathrm dt=\frac92t^2+C_3


With the initial condition \mathbf r(0)=\langle4,6,3\rangle, we find


\dfrac19\cos0+C_1=4\implies C_1=\dfrac{35}9

\dfrac16\cos0+C_2=6\implies C_2=\dfrac{35}6

\dfrac92\cdot0^2+C_3=3\implies C_3=3


So the particular solution to the IVP is


\mathbf r(t)=\left\langle\dfrac19\cos9t+\dfrac{35}9,\dfrac16\cos6t+\dfrac{35}6,\dfrac92t^2+3\right\rangle

4 0
3 years ago
Can someone explain to me what a “derivative” means? How do you find the derivative of f(x)=x^3+1?
Ostrovityanka [42]
The derivative is the rate of change of a function, basically represents the slope at different points. To find the derivative of the given function you can use the power rule, which means, if n is a real number, d/dx(x^n)= nx^(n-1). This is a simplification of the chain rule based on the fact that d/dx(x)=1. Anyway, this means that d/dx(x^3 + 1)= 3x^2. Here n is 3 and so it is 3*x^(3-1)= 3x^2. The derivative of x^3+1 is 3x^2.

If you are wondering what happened to the 1, for any constant C, d/dx(C)=0.
4 0
3 years ago
What is 6(4x-3)-9x solved
GarryVolchara [31]
-18 +15x = y
Spam characters: aksjakfhakdjk
5 0
3 years ago
Which equation is represented by Ms. Wilson’s model
SVEN [57.7K]

<span>                         D                     Q</span>

TC<span> =  D x P <span>+  ___   x  Cp +  ____  x Cs</span></span>

                         <span>Q                      2</span>

TC: Total Cost

P: Price per unit

Q: Quantity

Cp: Cost of issuance of a purchase order

<span>Cs: storage cost per unit</span>

7 0
3 years ago
Jada solved the equation Negative StartFraction 4 over 9 EndFraction = StartFraction x over 108 EndFraction for x using the step
GalinKa [24]

Answer:

Jada should have multiplied both sides of the equation by 108.

Step-by-step explanation:

The question is incomplete. Find the complete question in the comment section.

Given the equation -4/9 = x/108, in order to determine Jada's error, we need to solve in our own way as shown:

Step 1: Multiply both sides of the equation by -9/4 as shown:

-4/9 × -9/4 = x/108 × -9/4

-36/-36 = -9x/432

1 = -9x/432

1 = -x/48

Cross multiplying

48 = -x

x = -48

It can also be solved like this:

Given -4/9 = x/108

Multiply both sides by 108 to have:

-4/9 * 108 = x/108 * 108

-4/9 * 108 = 108x/108

-432/9 = x

x = -48

Jada should have simply follow the second calculation by multiplying both sides of the equation by 108 as shown.

7 0
3 years ago
Other questions:
  • A set of four 15.0-mL solutions—each in a similar open dish—was left at room temperature, and the amount that remained was recor
    13·2 answers
  • The perimeter of Dawna's new flat screen television is 112 inches. The ratio of its length to width is 4:3. Write and solve an a
    12·1 answer
  • A ramp with a constant incline is made to connect a driveway to a front door. At a point 4 feet from the driveway, the height of
    8·1 answer
  • Use the diagram of the right triangle above and round your answer to the nearest hundredth.
    13·2 answers
  • suppose you multiply a fraction Less than 1 by the mixed number 2 and 3/4 will the product be less greater or equal to 2and3/4
    14·1 answer
  • Help will give brainliest
    14·2 answers
  • Bronson is an action and horror movie junkie. He started a movie review vlog and needs to keep up with his movie viewing at a hi
    7·1 answer
  • 4) A TV is on sale. The TV has been reduced by 20%. The sale price is £540. What was the
    8·1 answer
  • (6/11+2/11)x 3/7 = ?
    14·2 answers
  • Anyone know the answer to the first one?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!