Answer:
4 cannot be the measure of the third side. This is because of the Triangle Inequality Theorem, which states that the sum of two sides of a triangle must be greater than the third side (A+B>C, A+C>B, B+C>A) In this example, if side C were 4, side C (4) plus side A (8) would be 12. Since side B is 12, and 12 cannot be greater than 12, 4 would not work.
Answer=8
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Quadratic equation
Let point O be the midpoint of a segment P₁P₂. Then point O has coordinates (-6,5). You also know coordinates (-9,7) of point P₁.
Use formula for midpoint's coordinates:

Substituting known coordinates, you get:

Thus,

Answer: 
24*((6) - 1)
24*5
= ?
I believe you can multiply them. Just remember PEMDAS
Parenthesis, Exponents, Multiplication, Divison, addition, subtraction
I remember by Please Excuse My Dear Aunt Susan