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
Tatiana [17]
3 years ago
9

What is the solution of the system 3x + 2y =18 Y= -2/3x + 12

Mathematics
2 answers:
Pani-rosa [81]3 years ago
6 0

3x = 18-2y

x= 6 - 2/3y

then substitute in the second equation

Y= -2/3x + 12

y=-2/3(6-2/3y)+12

y= 72/5

then substitute y= 72/5 in the first equation x= 6 - 2/3y

then x = -18/5

laiz [17]3 years ago
4 0

Answer:

3x + 2y =18


Y= -2/3x + 12

3x + 2(-2/3x+12) = 18

3x + (-4/3x+24) = 18

3x + -1 1/3x +24 =18

1 2/3x +24 = 18

1 2/3x = -6

5/3x = -6

x = -3.75

Step-by-step explanation:

You might be interested in
Want to know what differenciation and Calculus is all about?
Alla [95]
Differentiation is part of calculus
differentiation basically allows you to find the gradient of tangent
6 0
3 years ago
A yard of fabric costs 22.99 how much will 2 feet costs
marshall27 [118]
\frac{22.99}{3ft} =  \frac{d}{2ft}  \\ \\  d=15.33
7 0
3 years ago
Read 2 more answers
7x + 10x + 20 = what​
RSB [31]

Answer:

the answer is 17x+20

Step-by-step explanation:

7x+10x+20

17x+20

hope it helps

mark me brainliest pls

6 0
3 years ago
Read 2 more answers
Attachment Mathswatchhhh!!!!!!!!!
Alexus [3.1K]

Answer:

(a) draw the graph using these coordinates :

(0,-1) and (3,1)

(b) x = 3

6 0
3 years ago
A combination lock uses three numbers between 1 and 78 with​ repetition, and they must be selected in the correct sequence. whic
Oksana_A [137]

  first number      and       second number       and     third number   =     Total

78 possibilities      x         78 possibilities           x     78 possibilities   =     234

Since "order" matters, this is a permutation.

So, this can be calculated using: ₇₈P₃

"Permutation lock" would be a more appropriate name.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Newton currently has an account balance of $6225.18. He opened the account 15 years ago with a deposit of $4543.11. If the inter
    13·1 answer
  • Find the geometric mean of 125 and 5
    5·1 answer
  • Evaluate ƒ(x ) = x 2 + 1 for ƒ(10).<br><br> 2√2<br> 101<br> 21
    11·1 answer
  • A car's speed is 45 miles per hour. How far will it go in 4 hours and 20 minutes?
    14·2 answers
  • The table shows Ava's checking account activity for several weeks. Ava's beginning balance was $685. What was her ending balance
    8·1 answer
  • PLEASE HELP, ANYONE? 15m is what percent of 60m; 3m; 30m; 1.5 km?
    11·1 answer
  • Is this a possible triangle? 2ft, 3ft, 4ft sides
    6·1 answer
  • I need help ... please help
    5·1 answer
  • Determine the sign of each product and place it in the correct category​
    13·1 answer
  • If f(x) =&gt; x2 +6, what is the value of f(8)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!