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
Karo-lina-s [1.5K]
4 years ago
10

6x + y = -39 3x + 2y = -15 elimination using multiplication

Mathematics
1 answer:
vlabodo [156]4 years ago
5 0
Multiply the second equation by 2 so that its 
6x+4y=-30
then subtract 
6x+y=-39
6x+4y=-30
= -3y=-69
divide by -3 to isolate the y
then you get y=23
substitute the y value back into one of the equations to solve for x.
6x+23=-31
solve like you always do and you'll get your x
Congratulations, you solved a problem.

You might be interested in
There are already 1,400 gallons of water in a swimming pool. If water is filling the pool at a rate of 30 gallons per minute, wh
docker41 [41]
(30*m)+1,400 hope this helped
8 0
4 years ago
What number is another way to write 60+4?
Ainat [17]
50 + 14. Hope this helps!
3 0
3 years ago
Read 2 more answers
A survey was distributed to 2.000 employees and 90 percent of these employees responded to the survey. Of the employees respondi
fiasKO [112]

Answer:

720 employees

Step-by-step explanation:

Number of responded employees = 90% of 2000 employees = 1800 employees

Out of 1800 employees, if 60% answer yes, then the remaining 40% will answer "no". 72 employees did not respond to the survey.

Number of "no" answered employees = 40% of 1,800 employees = 720 employees( Answer)

3 0
3 years ago
Someone help me with this pleaseee..
Blababa [14]

So whatever happened does not matter, They are only asking the volume of liquid left in A at the end. Therefore :

Calculation :

B + 120 = 4A

B = 4A - 120 ---------- 1

A - 120 = B ------------ 2

Subtract 2 from 1

B - B = 4A - 120 - A - 120

0 = 3A - 240

240 = 3A

240 ÷ 3 = A

8 = A

Answer :

A = 8

3 0
3 years ago
Help! Need answer right now!!
enyata [817]

Step-by-step explanation:

a = 1, b = 9, c = 8

with the quadratic formula;

x = -9 + \|9² - 4(1 × 8) ÷ 2(1) or x = -9 - \|9² - 4(1 × 8) ÷ 2(1)

x = -9 + \| 81 - 32 ÷ 2 or x = -9 - \| 81 - 32 ÷ 2

x = -9 + \| 49 ÷ 2 or x = -9 - \| 49 ÷ 2

x = -9 + 7 ÷ 2 or x = -9 - 7 ÷ 2

x = -2 ÷ 2 or x = -16 ÷ 2

x = -1 or x = -8

4 0
3 years ago
Other questions:
  • The variable, n, represents a number that a spectator chooses. what is the result after the calculation of 2n + 4 – n – 4?
    11·2 answers
  • Please help! I have a deadline by tonight, hopefully someone can help x
    12·1 answer
  • Guided Practice1. Based on the information in the table, is the relationship between timeand the number of words typed a proport
    15·1 answer
  • The average class size this semester in the business school of a particular university is 38.1 students with a standard deviatio
    13·1 answer
  • A circle has a radius of 9 centimeters. what is the length of its diameter?
    14·2 answers
  • Given the equation: (a-c)/(x-a) = m, solve for x.
    6·2 answers
  • Which of the following is true of the values of x and y in the diagram below? A unit circle is shown. A radius with length 1 for
    6·1 answer
  • What is this answer?
    9·2 answers
  • Please help I will really appreciate it​
    15·1 answer
  • Can someone teach me how to do this?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!