They give you an "x =" statement so you plug in the right side of the equals sign into the first equation wherever x appears. So...
y = 10 - 2(y - 4)
y = 10 - 2y + 8
y = 18 - 2y
y + 2y = 18
3y = 18
y = 6
Now we plug in this result for the y-value into the "x =" statement.
x = 6 - 4
x = 2
Your answer is (2, 6)
Hi there!
44 lbs : 12 gal = 22 : 6 = 11 : 3
11 pounds in 3 gallons
Hope this helps!
B. 25, acute
You can see it’s acute. 160 would be obtuse
Okay so 3 hours*60 minutes= 180
45 minutes?
so 180/45=4
so in three hours she has had four sessions
and in six it will be 8
in nine it will be 12
and in 12 it'll be 16
sixteen sessions
hope i am right
Answer:
−7r^(2)+12r+10x−18
Step-by-step explanation:
Grab the original equation: 10x+7r−r^(2)−6r^(2)−18+5r
For subtraction bits, treat them as negatives: 10x+7r+−r^(2)+−6r^(2)+−18+5r
Combine like terms: (−r^2+−6r^2)+(7r+5r)+(10x)+(−18)
Simplify that, and you get your final answer: −7r^(2)+12r+10x+−18
