Step-By-Step Explanation:
(5 + 7) + 6y
associative
because the brakets' spots changed
12 + 6y
combining
because they combined the same type of terms
6y + 12
commutative
because they changed the spots of the 2 terms
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Answer:
C
Step-by-step explanation:
Given the 2 equations
3x + 4y = 8 → (1)
y - 5x = 2 ← rewrite as
- 5x + y = 2 → (2)
Multiplying (2) by - 4 and adding to (1) will eliminate the y- term
20x - 4y = - 8 → (3)
Add (1) and (3) term by term to eliminate y
23x + 0 = 0
23x = 0 , then
x = 0
Substitute x = 0 into either of the 2 equations and solve for y
Substituting into (1)
3(0) + 4y = 8
4y = 8 ( divide both sides by 4 )
y = 2
solution is (0, 2 )
That is the lines intersect once at (0, 2 )
Each piece will have an area which is 1/2 of the area of the rectangle. The diagonal cuts the rectangle in half.
= 1/2 ( 2 * 1/1/4)
= 1 1/4 m^2
I'm assuming this means solve for x in which case:
y=ax+b
y-b=ax
(y-b)/a = x
