Answer: (7, 0)
Step-by-step explanation:
We have the system of equations:
9*x - y = 63
x = y + 7
We can see that the "x" is isolated in the second equation, then we can replace it in the first equation to get:
9*x - y = 63
9*(y + 7) - y = 63
Now we have an equation that only depends on one variable, so we can solve it:
9*y + 63 - y = 63
8*y + 63 = 63
8*y = 63 - 63 = 0
y = 0/8 = 0.
Now we know the value of y, we can replace this in one of the initial equations to find the value of x, i will replace this in the second equation:
x = y + 7 = 0 + 7 = 7
Then the point that is a solution for the system of equations is (7, 0)
Answer:
{x:x<3}
Step-by-step explanation:
You first change the < to = in order to simply it. Thus,
- 2x-5=1
- 2x=1+5( move the -5 to the right hand side to obtain 5)
- 2x= 6
- dividing through by 2
- 2x/2=6/2
x=3 . Therefore the solution is {x:x<3} <u>sing you didn't divide with a</u> <u>negative number ,the < sing remains unchanged</u>
Answer:
24 hours
Step-by-step explanation:
This unit of measure is time.
24 hours are in one day.
I hope this helped!
Answer:
0.3
Step-by-step explanation:
Answer: Check explanations
Step-by-step explanation: When lines are parallel, then there are infinite solutions (the answer), if they are intersecting there is only 1 solution, which is the point where the lines intersect, and if they aren't intersecting or parallel, then No solutions.