Determine the best method to solve the system of equations. Then solve the system.
2 answers:
Answer:
x=1 y = -1/2
(1,-1/2)
Step-by-step explanation:
7x-2y=8
5x+2y=4
I would use elimination since we have 2y in one equation and -2y in the other
7x-2y=8
5x+2y=4
--------------------
12x = 12
Divide each side by 12
12x/12 = 12/12
x =1
The substitute back into equation 2
5(1) +2y = 4
5 +2y = 4
Subtract 5
5-5+2y = 4-5
2y = -1
Divide by 2
2y/2 = -1/2
y = -1/2
Answer:
The best method is the elimination method. The solution is (1, -1/2).
Step-by-step explanation:
7x - 2y = 8
5x + 2y = 4
12x = 12
x = 1
7(1) - 2y = 8
7 - 2y = 8
-2y = 1
y = -1/2
Make sure to write the answer in the form of an ordered pair.
Note: Alternative methods are graphing and the substitution method.
You might be interested in
L = 0 bcause it cancels itself out
Answer:
5
Step-by-step explanation:
5*10^5=500000 and 1*10^5=100000
Answer:
Step-by-step explanation:
f(x) = 8x + 8
f(x+1) = 8(x+1) + 8
= 8x + 8 + 8
= 8x + 16
Answer:
185 pounds
800 - 60 = 740
740 ÷ 4 = 185
Answer:
y < -x - 5
-4 < -(-3) - 5 = 3 - 5 = -2
So its point (-3, -4)