If y is substitute into either of the original equation. The solution as an ordered pair are: x=-2; y=3.
<h3>The solution as an ordered pair</h3>
x + 3y= 7 equation 1
x+2y=4 equation 2
Solving for y
x+3y-(x+2y)=7-4
x+3y-z-2y=7-4
3y-2y=7-4
y=7-4
y=3
Substitute y=3 into equation 2
x+2y=4
x+2×3=4
x+6=4
Collect like terms
x=4-6
x=-2
Therefore the solution as an ordered pair are: x=-2; y=3.
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Answer:
The new model can do the entire work alone in 3 hours.
Step-by-step explanation:
Let us assume that the newer model of computer can complete the job alone in x hours.
Therefore, in one hour this new model can do part of the job.
Again the old model can do the entire job alone in 6 hours,
So, in 1 hour the old model can do part of the job.
Therefore, if they work together, then in 1 hour they will do part of the job.
So, the entire work they can do together in hours.
So, given that
⇒ 6x = 2x + 12
⇒ x = 3 hours,
Therefore, the new model can do the entire work alone in 3 hours. (Answer)
Answer:
B
Step-by-step explanation:
Answer:
y=4x-3
Step-by-step explanation:
hope this helps
There are 479001600 different ways the first 12 letters of the alphabet can be arranged.