Answer:
If you choose any value for k other than 6, that will be give you the one solution.
If k=6, you have no solutions because the lines will be parallel.
Step-by-step explanation:
We are going to put each of this in y=mx+b where m is the slope and b is the y-intercept.
kx+2y=5
Subtract kx on both sides:
2y=-kx+5
Divide both sides by 2:
y=(-k/2)x+(5/2)
The slope is -k/2 and the y-intercept is 5/2
3x+y=1
Subtract 3x on both sides:
y=-3x+1
The slope is -3 and the y-intercept is 1.
We want the system to have one solution so we want the slopes to be difference.
So we don't want (-k/2)=(-3).
Multiply both sides by -2: k=6.
We won't want k to be 6.
Answer:
$6.66 per shirt
Step-by-step explanation:
20/3 = 6.66
It costs $6.66 per shirt, therefore the rate would be 6.66/shirt
Alright, so first divide 20 km by 1.2 cm
16.6666666667
Multiply 16.6666666667 by 9
150
So it's 150 km!
Hope this helps!
Answer:
amount saved
Step-by-step explanation:
now i need twenty points
Answer:
the first one
Step-by-step explanation:
