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
Vikentia [17]
3 years ago
8

#17 please help me solve this

Mathematics
1 answer:
Leto [7]3 years ago
5 0

Answer:

x =  -6; y = 3

Step-by-step explanation:

1. Make Ax + By = C into two equations.

3x + 5y = -3

(1) 5y = -3x - 3

    y = -3/5x - 3/5

(2) 3x = -5y - 3

     x = -5/3y - 1

2. Insert (1) and (2) into -3x + 2y = 24.

(1) -3x + 2(-3/5x - 3/5) = 24

   -3x - 6/5x - 6/5 = 24

   -21/5x = 126/5

   x = 126/5 * -5/21

   x = -6

(2) -3(-5/3y - 1) + 2y = 24

    5y + 3 + 2y = 24

    7y = 21

    y = 3

You might be interested in
ANSWER FAST PLEASE Which is a reasonable first step that can be used to solve the equation 4x+3(x+2)=5(2x-3)
s344n2d4d5 [400]
Distribute 3 to x + 2 and distribute 5 to 2x - 3
7 0
2 years ago
SOMEBODY PLEASE HELP ME SOLVE THIS!!
Alex777 [14]

Answer:

Step-by-step explanation:

74

8 0
3 years ago
How can I improve my math? How can I get better grades and scores in competitions like AMC 8, 10, 12, and MATHCOUNTS? I get low
frez [133]

Answer:

1. You r not dumb or stupid ur just having a hard time

2.u could get a tutor or someone who can help u understand differnet things and improve your grade

3.You could pratice/study more

4.Ask your teacher for help if u don't understand something

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the area of the parallelogram?
stira [4]

Answer:

a=bh

Step-by-step explanation:

the answer is 70

im sorry if thats not right

8 0
2 years ago
Read 2 more answers
Find the distance between -6 and 8
MA_775_DIABLO [31]

Answer:

14

Step-by-step explanation:

6+8=14

8 0
2 years ago
Read 2 more answers
Other questions:
  • In the number 38 which digit has largest value
    14·2 answers
  • Is 25% of 160 is 48?
    12·1 answer
  • Can someone please help me?
    9·2 answers
  • How do you put (x+5)(x-3)[x-(4-i)][x-(4+i)] into standard form
    9·1 answer
  • Assume the defect length of corrosion defect in a pressurized steel pipe is normally distributed with mean value 30 mm and stand
    5·1 answer
  • Helppp!!! I have to determine the height of the sandbox
    15·1 answer
  • Plz help me with this I have no idea what to do
    5·1 answer
  • PLS HELP LAST QUESTION
    8·1 answer
  • A line passes through the origin and has a slope of 4. What is the equation of the line that is parallel to the first line and p
    9·1 answer
  • In the number 344,589, how many times greater is the value of the 4 in the ten thousands place than the value of the 4 in the th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!