Answer:
The solution is (3,2)
Step-by-step explanation:
x - y = 1 →equation 1
-x + 3y = 3 →equation 2
by elimination method,
x - y = 1
-x + 3y = 3
-----------------
0 + 2y = 4
2y = 4
y = 4/2
y = 2
substitute y=2 in equation 1
x - y = 1
x - 2 = 1
x = 1 + 2
x = 3
∴(3,2) is the solution
Answer:
I think the answer is (-6,-2)
Answer:
y = 2.6x + 8
Plug 40 into y
40 = 2.6x + 8 and solve for x
x = 12.3 gallons
Answer:
See below
Step-by-step explanation:
L = length
W = 2 feet less than L = L-2
Area = L x W
20 = L * (L-2)
20 = L^2 - 2L
0 = L^2 - 2L - 20
Use Quadratic Formula a = 1 b = -2 c = -20
L = [-b ± sqrt(b^2-4ac) ]/2a
to calculate <u> L = 5.5826 ft then W = L-2 = 3.5826 ft </u>
