First you divide L+W by 2 and you would get A/2=L+W then you would subtract L and get A/2 -L=W
Answer:
D
Step-by-step explanation:
The equations are
● 4x + 2y = 10 (1)
● 4x - 2y = -10 (2)
● 4x + 2y = 10
Add - 4x to both sides
● 4x + 2y -4x = 10 -4x
● 2y = 10 -4x
Divide both sides by 2
● 2y/2 = (10 - 4x)/2
● y = 5 - 2x
● y = -2x + 5 (1)
● 4x - 2y = -10
Add -4x to both sides
● 4x -2y -4x = -10 - 4x
● -2y = -10 - 4x
Divide both sides by -2
● -2y/-2 = (-10 -4x)/-2
● y = 10 + 2x
● y = 2x + 5 (2)
So the equation are
● y = 2x + 5
● y = -2x + 5
Graph them
The lines intersect at (0,5) but aren't perpendicular
So the answer is d
Answer:
4x + 10y = 36 ≡ to 2x + 5y = 18
As you can see, the the coefficients on the first one are double those in the second.
12x - 9y = -60 ≡ to -4x + 3y = 20
In this case, the terms in the first one are all the same, but multiplied by -3
And by simple elimination we can say:
-24x - 8y = 40 ≡ -6x - 2y = 10
In this case, the terms of the first equation are equal to those of the latter, but all multiplied by 4.
Step-by-step explanation:
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