Solve x + 3y = 9
3x – 3y = -13
2 answers:
Answer:
x = -1
y = 3.33
Step-by-step explanation:
Isolate one term from either equation.
W'ell isolate x from the first equation.
x + 3y = 9
Rearrange:
x = 9 - 3y
Substitute this value for x into the second equation.
3x - 3y = -13
3(9 - 3y) -3y = -13
27 - 9y - 3y = -13
-12y = -40
y = 10/3 = 3.33
Substitute this value for y into the original equation.
x + 3 × (3.33) = 9
x = -1
Substitute both values into second equation to check.
3(-1) - 3(3.33) = -13
Therefore, x = -1
and y = 3.33 (or 10/3)
The answer is X= -1 and Y= 3.33
You might be interested in
You have to have a better question to answer that, 100 feet more what?
Answer:
-0.1, 0, 0.8, 1.2, 1.6
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hope this helps!
85/15 is 5 2/3
so, to find 85% with 15%, you would multiply 12 (also 15%) by 5 2/3.
12*5 2/3=68.
you could also find it using the 1% method:
1% of 15 is .15.
.15*85=68.
Hope this helps!
Answer:
B
Step-by-step explanation:
I GOT IT CORRECT
