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
AnnyKZ [126]
3 years ago
12

What is the solution of the system of equations? 3x + 6y = –2 15x + 30y = –10

Mathematics
2 answers:
cestrela7 [59]3 years ago
7 0
3x + 6y = -2......multiply by -5
15x + 30y = -10
--------------------
-15x - 30y = 10 (result of multiplying by -5)
15x + 30y = -10
--------------------add
0 = 0

there are infinitely many solutions

MrRa [10]3 years ago
5 0
3x + 6y = -2 
x = -2y-2/3
15x +30y = -10
x = -2y- 2/3

The answer would be C
You might be interested in
What is the sum of six hundred seven and two thousand, three hundred ninety three
djyliett [7]

Answer:

3000

Step-by-step explanation:

Convert them into numbers: 607 + 2393 = 3000.

8 0
2 years ago
Read 2 more answers
-3x-6y=11. 2x+y = 4 solving linear systems using multiplication and addition show your work
sladkih [1.3K]
<span>Example<span>Problem<span><span>Use elimination to solve the system.</span>   x –<span> y = </span>−6x <span>+ y = 8</span></span> </span><span> Add the equations.</span><span> <span><span>2x = 2</span>x = 1</span><span>Solve for x.</span></span><span> <span>x<span> + y = 8</span><span>1 + y = 8</span>y = 8 – 1y = 7</span><span>Substitute x = 1 into one of the original equations and solve for y.</span></span><span> <span>x<span> – y = −6</span>1 – 7 = −6−6 = −6 TRUE</span><span>x<span> + y = 8</span>1 + 7 = 88 = 8TRUE</span><span>Be sure to check your answer in both equations!</span></span><span>AnswerThe solution is (1, 7). </span></span>
3 0
2 years ago
A solution is heated from 0°C to 100°C. Between 0°C and 50°C, the rate of temperature increase is 1.5°C/min. Between 50°C and 10
muminat

Answer:

0.6 °C/min

Step-by-step explanation:

The relationship between rates and movement is ...

time = distance/speed

Here, the "distance" is measured in °C, and the "speed" is the rate of change of temperature.

For the first half of the heating, the time required is ...

(50°C -0°C)/(1.5 °C/min) = 50/(3/2) min = 100/3 min

For the second half of the heating, the time required is ...

(100°C -50°C)/(4/10 °C/min) = 50/(4/10) = 125 min

Then the total time is ...

((100/3) +125) min = (475/3) min

And the average rate of temperature increase is ...

total temperature change / total time

= (100°C -0°C)/(475/3 min) = 300/475 °C/min = 12/19 °C/min ≈ 0.6 °C/min

4 0
3 years ago
Solve the following system of equations using the
Alja [10]

Answer:

The solutions are 3 and -5

Step-by-step explanation:

x+3=x^2+3x-12

x^2+2x-15

=(x-3)(x+5)

6 0
3 years ago
Read 2 more answers
Given the following two statements, what conclusion can be made? Three noncollinear points determine a plane. Points S, O, N are
laila [671]
Actually, this has little to do with mathematics and geometry but has to do more with logical reasoning. You have two clauses to get a conclusion from. The reasoning is as follows:

Clause 1: <span>Three noncollinear points determine a plane
Clause 2: </span><span>Points S, O, N are noncollinear
</span>Conclusion: Therefore, points S, O and N form a plane.
7 0
3 years ago
Read 2 more answers
Other questions:
  • The ferry between an island and mainland makes on round trip a day on Monday the ferry carried 83 people to the island and retur
    5·2 answers
  • As compared to its first year of operation, ABC Company grew 8% in the second year and an additional 2% per year for the next tw
    8·1 answer
  • Please help on this !!!!!!!!!!! Will mark brainliest answer !!!!!!!!!
    12·2 answers
  • Quadrilateral W X Y Z is shown. Diagonals are drawn from point W to point Y and from point Z to point X and intersect at point C
    10·2 answers
  • Please help:<br><br> negative 3 over 5 ÷ 7 over 6
    12·2 answers
  • 6 less than a number is -4 what is the number?
    14·2 answers
  • Write the fraction or mixed number as a money amount and as a decimal in terms of dollars. 1 48/100
    15·2 answers
  • A total of 12,650 voters completed an online survey that asked if they are going to vote for a certain political canidate in an
    5·1 answer
  • Can someone please explain how I am supposed to do this I do not understand at all whatsoever.
    7·1 answer
  • 1) In triangle ABC, LC = 90, Write Pythagoras theorem for triangle.​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!