Use distributive property <em>a(b + c) = ab + ac</em>
4(x + 2) - 3(7 + y) = (4)(x) + (4)(2) + (-3)(7) + (-3)(y)
= 4x + 8 - 21 - 3y = 4x - 3y - 13
Answer:
- Equal midpoints of AC and BC.
- The product of the slopes of the diagonals AC and DB is -1.
Step-by-step explanation:
1. Plot the given points, as you can see in the graph attached.
2. Calculate the midpoint of AC and DB:

Therefore, the midpoint of AC and DB are equal.
3. Calculte the slope of the diagonals AC and DB:

4. Multiply the slopes of the diagonals:
(AC and DB are perpendicular)
D 100% corect took my test $$$$$$$$$$$$$$
1/ we make -3*and and we have y=-1 and we replaced to have x=6
2/ any answer x=(7y+3)÷2
If we change answer of x in the second equation we get -7y-3+7y=-3
3/ x=-4+2y we change it in the second equation and we get y =1 if replace it in the first we have x=-2
4/ B=10 and C=16
5/ a= false
b=true
c=true
d=true