Answer:
D
Step-by-step explanation:
a is false since x could be 0.
b is easy to check, just plug numbers in, and we can see that it's false(you would get 0+0=1 and -0-0=-1 once plugged in)
c is also easy to check, just plot the line or simplify the first equation. since (2x+2y)/2=4/2 is also x+y=2, the second equation is also x+y=2, so it must have infinitely many solutions.
d must be true due to process of elimination but let's check to make sure.
7y=14x, divide both sides by 7 to get y=2x and since they're the same equation it must mean that they have infinitly many solutions and we can see that it is correct
Answer:
y=29
x=9
Step-by-step explanation:
plug the first equation into the second one as y
2x+y=47
solve
then plug answer u got in x
y=3(9)+2
solve
If you would like to solve the inequation G/4 - 8 <= - 10, you can calculate this using the following steps:
G/4 - 8 <= - 10
G/4 <= - 10 + 8
G/4 <= - 2 /*4
G <= - 2 * 4
G <= - 8
The correct result would be G <= - 8.
X-number of weeks
50-2X ≥ 20
-2X ≥ 20-50 multiply both sides by -1
2X ≥ 30
X ≥ 30/2
X ≥15
Katie can withdraw money for at least 15 weeks.
Answer:
-10
Step-by-step explanation:
3-13=-10