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
murzikaleks [220]
3 years ago
10

solve the below systems of equations using linear combination method. 2x + 3y =1. and y= -2x - 9. explain

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Answer:

Solving below systems of equations using linear combination method we get

x = -7

y =  5

Step-by-step explanation:

Linear combinations which is also commonly known as the addition method is used for solving the system of equations without graphs

Step 1: arrange the equation in standard form

2x + 3y = 1----------------------(1)

2x +  y  =  -9--------------------(2)

Step 2: Set one of the coefficient to opposite sides

So lets multiply eq(2) with negative sign, so

2x + 3y = 1

-2x -  y  =  9

Step 3: Perform Addition

2x + 3y = 1

-2x -  y  =  9

-----------------------

0x +2y = 10

--------------------------

Step 4: Solve for y

2y =10

y =\frac{10}{2}

y = 5

Step 5: Substitute y value in equation(1)

2x + 3(5) = 1

2x + 15 =1

2x = 1-15

2x =-14

x= \frac{-14}{2}

x = -7

You might be interested in
I need the answer ASAP thank you very much!!!!!
umka21 [38]
HI THERE LET ME HELP U WITH YOUR QUESTION

**PERFECT SQUARES ARE POSITIVE INTEGERS**<span>
</span>THE NUMBERS CANNOT INCLUDE ITSELF AND ALWAYS SHOULD HAVE A ONE IN IT. 

2.89 AND 0.004 ARE PERFECT NUMBERS. THEY INCLUDE 1 AND THEY DONT INCLUDE ITSELF

HOPE IT HELPS  

 

8 0
3 years ago
Answere Number 6,7,8,9,10,11,12 PLEASE help :)
stepan [7]
6.)17/12 7.)9/10 8)1 1/6 9.)1 3/8 10.)7/6 11.)7/10 12.)1 1/8
7 0
3 years ago
Read 2 more answers
Which are prisms in which are pyramids ​
UNO [17]
I don’t see a picture to answer this
7 0
3 years ago
A line with a slope of 2 passes through the points (0,4) and (-6,v). What is the value of v?
krok68 [10]

To solve this problem, we should create an equation using the given information.  To do this, we should calculate the slope between the two points as if they were regular points, giving us:

change in y/change in x = (v-4)/(-6-0) = (v-4)/(-6)

Since we know that the slope is 2, we can set our calculated value for the slope of the line for the equation (v-4)/(-6) equal to 2, as shown below:

(v-4)/(-6) = 2

To solve this equation, we should multiply both sides of the equation by -6 to get rid of the denominator on the left side of the equation.

v-4 = -12

Next, we should add 4 to both sides of the equation to get the variable v alone on the left side of the equation, as shown below:

v = -8

Therefore, v =-8 is your answer.

Hope this helps!

4 0
3 years ago
Cody has $700 in a savings account that pays 4% simple interest. how much will he have in one year
Vlada [557]

748....to get the answer you need to do 700/0.04%/365= 748

7 0
3 years ago
Other questions:
  • A salad made such that the difference between twice the ounces of greens and the ounces of carrots is at least 3. Also, the sum
    11·2 answers
  • What is the length of a diagonal of a square with a side length of 6?
    14·2 answers
  • What is the base 2 representation of 10
    13·1 answer
  • Solve for C:<br><br> C + 8 = -11<br><br> C = _____
    8·2 answers
  • 1 2/3 divided by 11/12 (fracions)
    15·2 answers
  • What is the y-intercept of the graph?
    9·2 answers
  • The measures of the angles of a triangle are shown in the figure below. Solve for x.
    14·2 answers
  • Jada walks up to a tank of water that can hold up to 10 gallons how many more minutes will it take for the tank to drain complet
    14·1 answer
  • #72 i will give brainliest to the best answer!​
    15·1 answer
  • A 20-foot ladder is leaning against a building. The ladder forms an angle of 55" with the ground.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!