I have a series of 2 questions.
1 answer:
1)
I:y=3x-4
II:9x-3y=14
substitute y into II:
9x-3*(3x-4)=14
9x-9x+12=14
12=14
this is obviously not equal so there is no solution, the lines are parallel
2)
I:y=4x+6
II:5x-y=6
substitute y into II:
5x-(4x+6)=6
5x-4x-6=6
x=12
substiute x into II:
5*12-y=6
-y=6-60
-y=-54
y=54
the solution is (12,54)
You might be interested in
Answer:
84 km
Step-by-step explanation:
you times 7 by 4 and get 28 then you times 3 by 28 and get 84 km
Answer: By 9.1%
Step-by-step explanation:
(x-5)(x+2)=0
roots: x=5 and x= -2
see attached photo for steps
40
100
or the decimal 0.40. Notice that 80 out of 200 and 10 out of 25 are also 40%, since
80
200
=
10
25
=
40
100
