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
Elena-2011 [213]
3 years ago
7

X-y = -10 2x+4y=22 substitution

Mathematics
1 answer:
Tema [17]3 years ago
4 0

Answer:

[1]    x - 4y = 22

  [2]    2x + 5y = -21

Step-by-step explanation:

Solve equation [1] for the variable  x  

 

 [1]    x = 4y + 22

// Plug this in for variable  x  in equation [2]

  [2]    2•(4y+22) + 5y = -21

  [2]    13y = -65

// Solve equation [2] for the variable  y  

  [2]    13y = - 65  

  [2]    y = - 5  

// By now we know this much :

   x = 4y+22

   y = -5

// Use the  y  value to solve for  x  

   x = 4(-5)+22 = 2

I am sorry if I get it wrong.

You might be interested in
I NEED HELP!! PLEASE ANSWER WITHIN NEXT 5 minutes<br> PLEASE HELP!!!!! WHAT IS THE RULE????
Wewaii [24]

Answer:

ΔEDC CNBD

Step-by-step explanation:

The triangles show AAA, which cannot be used to demonstrate congruency

6 0
3 years ago
I understand the simple interest part, however I don’t understand the compounded interest part, need help quick.
Burka [1]
Compound interest is the starting amount x (1+ the interest rate as a decimal)^ the time in years=the final amount.

In your case, the equation will be $1000*(1+0.10)^how many years= the final amount.
7 0
3 years ago
How much change will MRS Sloan receive....
NISA [10]
15. 75 s̶i̶n̶c̶e̶ 20.00 p̶o̶u̶n̶d̶s̶ - 4a̶n̶d̶ 25 p̶o̶u̶n̶d̶s̶ e̶q̶u̶a̶l̶ 15.75 p̶o̶u̶n̶d̶s̶
6 0
3 years ago
Wxyz is a rectangle, what is zx
Alika [10]
ZX is a diagonal line from corner to corner.
6 0
3 years ago
Read 2 more answers
Please help me!!!!!!​
enot [183]

Answer:

2

Step-by-step explanation:

rounded down

4 0
3 years ago
Other questions:
  • how many servings are in a bag of trail mix that weighs 11 1/2 ounces and each serving of trail miix weighs 3/4 ounces
    8·1 answer
  • 15 POINTS
    14·1 answer
  • The graphs below have the same shape. What is the equation of the blue graph?
    12·1 answer
  • Assume that​ women's heights are normally distributed with a mean given by mu equals 62.3 in​, and a standard deviation given by
    11·1 answer
  • If the circle graph above represents the activities Skylar completes in a day, how
    9·1 answer
  • Which is the correct answer?
    7·1 answer
  • What is the product 6(x^2-1) multiplied by 6x-1/6(x+1)
    13·2 answers
  • HELP PLEASE- <br> I would really appreciate it
    8·1 answer
  • The triangular prism below has a base area of 28.7 units² and a height of 11 units.
    9·1 answer
  • Information about a play took up 1/3 of the pages in the program. Information about the actors took up 1/4 of the remaining page
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!