-3/11
Step-by-step explanation:
7-10/3-(-8)
7-10/3+8
Answer:
Let's simplify step-by-step.
3e−6e+3e−4e
=3e+−6e+3e+−4e
Combine Like Terms:
=3e+−6e+3e+−4e
=(3e+−6e+3e+−4e)
=−4e
Step-by-step explanation:
You are welcome
#1)
Answer:
x=1 and y=12
Explanation:
y=5x+7
y=2x+10
This system should use substitution because the value of y is given in terms if x.
Substitution:
5x+7=2x+10
Solve:
3x=3
x=1
Substitute x to solve for y by plugging x into one if the original equations(doesn’t matter which one is used).
y=5x+7
y=5(1)+7
y=5+7
y=12
#2)
Answer:
x=-8 and y=2
Explanation:
y=2x+18
9y=-2x+2
This system also uses substitution. The value of y us already given in terms if c in the first equations, so we will substitute in the second equation.
Substitute:
9(2x+18)=-2x+2
Solve:
18x+162=-2x+2
20x=-160
x=-8
Now that we have the value if x, plug it into one of the original equations(doesn’t matter which equation) and substitute to find y.
y=2x+18
Substitute:
y=2(-8)+18
Solve:
y=-16+18
y=2
The number pattern to that is multiply by 10.
4 is 20% of 20. Hope this helps!
