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
Aleksandr [31]
2 years ago
11

1. What should be done to these equations to solve the system of equations by elimination? 2+y=12 5x - 3y = -3​

Mathematics
1 answer:
atroni [7]2 years ago
3 0
<h3>Answer:</h3><h3>Multiply the first equation by 3</h3>

<h3>explanation</h3>

To solve a simultaneous equation using elimination method, you eliminate one variable first.

Before you can do that, the coefficient of one of the variable in the two equations must be same.

From the questions, for the coefficient of one variable in the two equations to be thesame, we multiply the first equation by 3.

If we do this, the coefficient of Y in the two equations will now be 3.

So that the correct option is

<h2>Multiply the first equation by 3</h2>
You might be interested in
Please help and work out both questions! ill give brainlest and 20 points
raketka [301]

Answer:

Step-by-step explanation:

6. Use PEMDAS

-3 x (7 + (-3)*2) / 3

-3 x (7 + 9) / 3

-3 x 16 / 3

-48 / 3

-16

7. 9 (x) = -63

X = - 63 /9

X = -7

6 0
2 years ago
Read 2 more answers
The ratio of dark chocolate candies to white chocolate candies is 3 to 2. There are 18 pieces of dark chocolate. How many pieces
ch4aika [34]

there are 18 pieces of dark chocolate and the ratio of dark and white is 3:2 so we can divide 18 by 3.

18/3 = 6.

This means the ratio of dark chocolate to white as a 1:1 ratio would be 6:6 so we can multiply 6 by 2 to give us the total amount of pieces of white chocolate.

6*2 = 12.

Therefore there are 12 white chocolate pieces.

4 0
3 years ago
Jason had $414 in his savings account. He deposited $125 last week, and then he withdrew $88 from the account this week to buy n
ExtremeBDS [4]

Answer:

B) 451

Step-by-step explanation:

1) 414 + 125 = 539

2) 539 - 88 = 451

4 0
3 years ago
Read 2 more answers
if you could generate energy by fusing the hydrogen in solution a, how much of the solution would you need to generate the elect
iogann1982 [59]

Answer:

We know that:

Energy released by fusion of hydrogen in 1 liter of solution A = 7.6x10^10 J

Energy used daily in a certain family home = 3x10^4 J

(you did not write the units, so i suppose that are the same in both cases)

Then, if x is the number of liters of solution A used, the energy produced will be:

E(x) = x*7.6x10^10 J

And we want this equal to 3x10^4

then:

E(x) = x*7.6x10^10 J = 3x10^4 j

now we solve this for x.

x = (3x10^4 j)/(7.6x10^10 j) = 3.9x10^-7

Then you need to use 3.9x10^-7 L of solution a.

4 0
3 years ago
The differential equation in Example 3 of Section 2.1 is a well-known population model. Suppose the DE is changed to dP dt = P(a
LuckyWell [14K]

Answer:

Decreases

Step-by-step explanation:

We need to determine the integral of the DE;

dP/dt=P(aP-b)

dP=P(aP-b)dt

1/(dP^2-bP)dP=dt

We can solve this by integration by parts on the left side. We expand the fraction 1/P²:

1/(d-b/P)\cdot{P^2} dP

let

u=d-b/P

du/dP=b/P^2

dP=\int\limits {P^2/b} \, du

P=lnu/b

Substitute u in:

P=ln(d-b/P)/b

Therefore the equation is:

ln(d-b/P)/b=t

We simplify:

d-b/P=e^b^t

P=b/(d-e^b^t)

As t increases to infinity P will decrease

6 0
2 years ago
Other questions:
  • In a room there are a mixture of people and dogs. there are 72 heads, and 200 legs. how many dogs are in the room?
    10·1 answer
  • 1. $239 television; 10% discount 2. $72 game; 20% discount
    10·1 answer
  • The following graph shows a proportional relationship.
    5·1 answer
  • Lea has 3/4 cup of laundry detergent left in detergent bottle. Each load of laundry requires 1/6 cup of detergent. How many load
    6·1 answer
  • okay so for some reason my mind went completely blank and forgot how to do pathagoream theorem. so like could you tell me the st
    8·2 answers
  • Which statement is true about vertical angles. 1 point Vertical angles are congruent if two lines are parallel. If vertical angl
    8·1 answer
  • Which of the following is accurate about The Louisiana purchase in 1803 choose 3 that apply ///help me plz
    6·2 answers
  • URGENT!!!!!! URGENT!!!! WILL MARK AS BRAINLIEST!!!! Benjamin considers purchasing a car for $35,000. He has been approved for a
    5·1 answer
  • What is (5^-2)^3 in standard form? Please answer!
    10·2 answers
  • Can someone please help me thank you
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!