Answer:
x is 4
Step-by-step explanation:

Answer:
5. no
6. all
7. all
Step-by-step explanation:
Answer:
10.2 cm²
Step-by-step explanation:
The area (A) of a regular hexagon is
A =
× perimeter × apothem
Perimeter = 6 × 2 = 12 cm ( hexagon has 6 sides ), hence
A = 0.5 × 12 × 1.7 = 6 × 1.7 = 10.2 cm²
Yeah its D i just checked
X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9