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
bonufazy [111]
3 years ago
14

2m+n=7 4m+3n=-10 Solve using substitution method

Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

Answer:

m=31/2, n=-24. (31/2, -24).

Step-by-step explanation:

2m+n=7

4m+3n=-10

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

n=7-2m

4m+3(7-2m)=-10

4m+21-6m=-10

-2m=-10-21

-2m=-31

2m=31

m=31/2

2(31/2)+n=7

31+n=7

n=7-31

n=-24

You might be interested in
Someone help please
vekshin1

Steps to finding the line in the diagram with the format 'ax + by = c

1. Find the slope

  • To find the slope, we need any two points on the line --> (0,4) and (3,0)

                  Slope = \frac{y2-y1}{x2-x1} =\frac{4-0}{0-3} =-\frac{4}{3}

2. Set up, with any one point on the line and the slope, in point-slope form

   

        (y-y0)=m(x-x0)\\(y-4)=-\frac{4}{3} (x-0)\\y-4 = -\frac{4}{3} x\\\frac{4}{3}x+y = 4

<u>Answer</u>: \frac{4}{3}x+y = 4

Hope that helps!

5 0
2 years ago
Read 2 more answers
If you sleep an average of 7.5 hours each night, how many hours do you sleep in a year?
satela [25.4K]

Answer:

\boxed{\sf 2737.5 \ hours}

Step-by-step explanation:

The average is 7.5 hours of sleep each night.

There are 365 nights in 1 year.

\sf Multiply \ the \ value \ by \ 365.

7.5 \times 365

2737.5

5 0
3 years ago
Read 2 more answers
What is the name of the shape graphed by the function r = 2 - costheta
Afina-wow [57]

Answer:

limaçon (no inner loop)

Step-by-step explanation:

The equation of a limaçon is written generically as ...

r = b + a·cos(θ)

For b=2 and a=1, this would put the flat side on the left. Rotating it 180° can be accomplished by adding or subtracting π from θ. Then the equation can be ...

r = 2 + cos(θ-π) . . . . or ...

r = 2 - cos(θ)

8 0
3 years ago
Evaluate -12+ |4-9z| if Z=8
alexandr402 [8]

Answer:

-12+l4-72l

Step-by-step explanation: i hope this helps

3 0
3 years ago
Read 2 more answers
Fractions from 6 to 7, with an interval of between each pair of fractions
EastWind [94]

Answer:

6.7

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • PLEASE ASSIST ME WITH THIS
    9·2 answers
  • For his long distance phone service, Hans pays a monthly fee plus cents per minute. Last month, Hans's long distance bill was .
    8·1 answer
  • HELP I NEED THE ANSWER
    5·1 answer
  • Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.
    13·1 answer
  • Write an equation of the line that passes through (2,-4) and (0,4)
    10·1 answer
  • 1. Subtract. Write each answer in its simplest form (a) 35 - 13 = 2 - 2 = 25- 8 =​
    5·2 answers
  • What is the value of x ?​
    14·1 answer
  • 3-2+x+ 436 123/157 =
    7·2 answers
  • Construct equation
    15·1 answer
  • -Which equation is shown by the information in the table?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!