Solve the system if equations x + y = 30 y = 9x
2 answers:
Answer:
(3, 27)
Step-by-step explanation:
I will use substitution method.
y = 30-x
y = 9x
30 -x = 9x
30 = 10x
x = 3
So far we have (3, ?).
Now that we know x, we can plug in x to one of the equation to find y. I will plug it in at the bottom equation.
y = 9(3)
y = 27
Now we know that the solution is (3, 27).
X=3 y=27...I hope that helps!
You might be interested in
55% of 20 is 11. the answer is 20
Answer:
y=10
Step-by-step explanation:
4(-3)+2y=8
-12+2y=8
move the -12 0ver to the 8 by adding
2y=20
divide by 2
y=10
Answer:
it will not change, there is no probability of a coin flip other than 50/50
Step-by-step explanation:
it's always 50/50
Answer:
Acute Isosceles triangle.
