Answer: 4x − 2y = 6 . . . . . (1)
2x + y = 5 . . . . . (2)
(2) x 2 => 4x + 2y = 10 . . . . . (3)
(1) - (3) gives: -4y = -4
y = -4/-4 = 1
From (2), 2x + 1 = 5 => 2x = 5 -1 = 4
x = 4/2 = 2
Solution is (2, 1)
Substituting the solution into the options gives that
−4x − 2y = 10
−4y = 4 −4x
has the same solution.
hope this helped!! :)
Answer:
C is 5x+13 D is 5x+12
Step-by-step explanation:
expand brackets
K=12 because if you do 60/5=5k/5 your answer should equal 12.
The amount avaliable for division into lots is
25 ac - 0.35*25 ac = 0.65*25 ac = 16.25 ac
There are 43,560 ft² in an acre, so the number of possible lots is
(16.25 ac)*(43,560 ft²/ac)/(25,000 ft²/lot) = 28.314 lots
The developer has enough area for 28 lots.
C because when you expand all the numbers, they go in the same order as c has them.
