Answer:
(5/2, 3/2)
Step-by-step explanation:
The midpoint would be:

Answer:
0
Step-by-step explanation:
0 is the digit in the hundred thousands place if you calculate the place values of the number from the back of the number.
We need to know this:
If Δ > 0 we have two and different solutions
If Δ = 0 we just one solution
If Δ < 0 we don't have real solutions
Answer:
13.5
Step-by-step explanation:
area: 1/2*[x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)]