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
Alekssandra [29.7K]
3 years ago
13

What is the solution to the system of equation -7x-2y=-13 X-2y=11 Using substitution

Mathematics
1 answer:
Gnom [1K]3 years ago
8 0
        -7x - 2y = -13
-7x + 7x - 2y = 7x - 13
               -2y = 7x - 13
                -2         -2
                 y = -3.5x + 6.5

                      x - 2y = 11
    x - 2(-3.5x + 6.5) = 11
x - 2(-3.5x) - 2(6.5) = 11
             x + 7x - 13 = 11
                   8x - 13 = 11
                       + 13 + 13
                          8x = 24
                           8      8
                            x = 3

y = -3.5x + 6.5
y = -3.5(3) + 6.5
y = -10.5 + 6.5
y = -4
(x, y) = (3, -4)
You might be interested in
Alice's grandmothers age is a composite number between 70 and 80 and has a factor of 11 what is it
pshichka [43]

The factor of 11 is going to be 77 because you have to stay in between 70 to 80

and 7 times 11 is 77. It also has to be a number in the 11 timetables. It can't be 88 because we can't cross 80 so the factor is going to be 77.


Hope it helps

6 0
3 years ago
Read 2 more answers
Explain how you would find the total value of two $1 bills and 3 quarters
jeka57 [31]
2 $1 bills would equal $2 because they are $1 bills 1+1=2. Three quarters would equal .75 cents because a quarter equals .25 cents
5 0
3 years ago
I need help with this question.
pashok25 [27]

Answer:

B. 9/91

Step-by-step explanation:

-81/9 = -2

9/81 = 1/9

√9 = 3

√81 = 9

B is the odd one out; it's a fraction.

6 0
3 years ago
The greatest number of bat bags the coach can buy with $605 is
Studentka2010 [4]

Answer:

11

12

does not

Step-by-step explanation:

If we know how much money the coach has and how much each bag costs we can find out how much bags the coach can by by divide the money the coach has by the price of one bat bag. So we do....

605 / 55 = 11

So now we know that she can by 11 bags maximum, while she needs 12 bags for the team. From this we know that she does not have enough money to buy 12 bags.

7 0
2 years ago
If a sample of 58 runners were taken from a population of 302 runners, could refer to the mean of how many runners' times?
IceJOKER [234]
The answer will be neither 58 nor 302 58 Both 58 and 302 or just 302
4 0
3 years ago
Read 2 more answers
Other questions:
  • Ron and kathy are ticket sellers at their class play. ron handles student tickets that sell for $2.00 each, and kathy handles ad
    11·1 answer
  • What is the point on the graph of the function f(x) = 2(x - 2)2 + 3 at x = 27<br> ??
    10·1 answer
  • What is the answer to -7+2w=-1
    12·1 answer
  • Which system is equivalent to​
    10·2 answers
  • The total bill of a meal at a restaurant is 25x – 115. Five friends agree to split the cost of the meal equally. What could you
    10·2 answers
  • Write an equation that represents the relationship between
    9·1 answer
  • What would you divide the numerator and denominator by to put 16 over 24 in simplest form?
    7·2 answers
  • What happens to the pitch you hear when two sound waves constructively
    6·2 answers
  • From the observation deck of a skyscraper, Jack measures a 67 angle of depression to a ship in the harbor below. If the observat
    11·2 answers
  • Calculate. <br>a) 130% of 220​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!