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
stepan [7]
2 years ago
13

1

Mathematics
1 answer:
strojnjashka [21]2 years ago
4 0

Answer:

Step-by-step explanation:

3x - 4y = 13 (1)

2x + y = 5 (2)

——————

3x - 4y = 13

4(2x + y = 5) (2) times 4

——————-

3x - 4y = 13

8x + 4y = 20

——————-

11x = 33

x = 33/11

x = 3

Plug x = 3 in (2):

2(3) + y = 5

6 + y = 5

y = 5-6

y = -1

Thus, x = 3 and y = -1

You might be interested in
Solve the equation -x/6greaterthanequalto3
enot [183]

Answer (depending if the fraction is positive or negative):

  1. x ≥ 18
  2. x ≤ -18

Step-by-step explanation:

If the fraction is positive:

  1. Write it out: \frac{x}{6} \geq 3  
  2. Multiply each side by 6 to cancel out the 6 under x. It should now look like this: x ≥ 18

If the fraction is negative:

  1. Write it out: -\frac{x}{6} \geq 3  
  2. Multiply each side by -6 to cancel out the -6 under x. It should now look like this: x ≤ -18

I hope this helps!

3 0
2 years ago
How to solve it&&&&&&&&&&&
Dimas [21]

Answer:

y = 4 and x = 12

Step-by-step explanation:

Step by step explanation in the pic. Atleast the way I did it.

8 0
2 years ago
Two lines that intersect at 90 degree angles
Molodets [167]
That would be a right angle 
3 0
2 years ago
The sum of two numbers is 80 If four times the smaller number is subtracted from the larger number, the result is 10. Find the t
timama [110]
This can be solved using a system of equations. 
\left \{ {{x+y=80} \atop {x-4y=10} \right. 

Subtract y from both sides.
x=80-y
Substitute:
80-y-4y=80-5y=10
Subtract 80 from both sides:
5y=70
Divide both sides by 5:
y= \frac{70}{5} =14
Substitute.
x=80-14=66
3 0
3 years ago
Read 2 more answers
What is the unit rate for meters per second if a car travels 374 meters in 17 seconds?
Vikentia [17]

Answer:

22 meters per second.

Step-by-step explanation:

374 divided by 17 = 22.

8 0
2 years ago
Read 2 more answers
Other questions:
  • How to solve the different ways to find answer to 12 - 3?
    6·1 answer
  • Homeowner Dean owns the northwestern 1/8 of the northeastern 1/2 of the southwestern 1/8 of Section 31. How many acres is that p
    5·1 answer
  • What is the value of y?
    10·1 answer
  • The volume of a cube is 1,728 cubic inches, find the side length of each of its sides.
    14·1 answer
  • Is 4/6 greater than 4/7?
    14·2 answers
  • Line l is a perpendicular bisector of line segment A C. It intersects line segment A C at point B. Line l also contains points D
    5·3 answers
  • Find area of the circle
    8·2 answers
  • Which numerical expression reprensents 1/2 the sum of 7 and 5 ?
    10·2 answers
  • Select the gcf of these numbers. 25 · 5· 11 and 23· 52 · 7 a 2^2 · 3
    13·1 answer
  • 8xp is less than 8 but greater than 0
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!