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
sweet-ann [11.9K]
3 years ago
15

If 3x +y=12 find x when y=-15

Mathematics
1 answer:
maw [93]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

3x+y=12

3x+(-15)=12

3x=27

3/3= 27/3

x=9

You might be interested in
What do you call the number beside the variable in the expression?
Inga [223]

a numerical ciff3cient c constant

8 0
2 years ago
Solve the following simultaneous equations in ELIMINATION way​
Allisa [31]

Answer:

Here is the solution...hope it helps:)

3 0
2 years ago
2(g+5)=-7-4g+g include instructions plz!
Elza [17]
First distribute the 2, then add 7 to that side, so you have 2g+17=-4g+g , subtract 2g and it should be easy to find from there lol
4 0
3 years ago
Find the quotient 7/9 divided by 5/6
Blizzard [7]
7/9 divided by 5/6 = 14/15
in decimal for it would be 0.93
3 0
3 years ago
amanda increased the amount of protein she eats evry day from 48 to 54 g by what percentage di amanda increas3 the amount of pro
sammy [17]

Answer:

the amount increased by approximatley 12%

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Describe which of the two points lies on the graph of the line<br> 2x+2y=6<br> A,-4,5<br> B,6-3
    6·1 answer
  • Mauro has 140 ft of rope. He will cut it into two pieces so that the length of the longer piece is 3 times the length of the sho
    10·2 answers
  • Which expression is equal to h, given the following formula?
    14·1 answer
  • Name the quadrant in which the angle is in cos theta&gt;0, csc theta&lt;0
    7·1 answer
  • At school athletic events you can buy 3 drinks and 2 hot dogs for $4.80 or you can buy 1 drink and 1 hot dog for $2.00. How much
    8·1 answer
  • A sum of $360 is shared among three people in the ratio 2:3:7. Calculate the largest and smallest shares.
    8·1 answer
  • By rounding to 1 significant figure, estimate<br> 392.72<br> ÷<br> 8.44
    5·2 answers
  • What is jk? Please help asap!!!
    8·1 answer
  • Let f(x)=3x^2+2.
    9·2 answers
  • Divide g(x) = x^4 - 2x^3 + X + 3 by x+3
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!