Answer:
the perimeter of the square is 9 and the area would be 90
Answer:
c = -1
b = 9
a = 8
Step-by-step explanation:
16 = a × 1² + b × 1 + c
-2 = a × (-1)² + b × (-1) + c
-1 = a × 0² + b × 0 + c .........-> -1 = c
16 = a + b + c
-2 = a - b + c
16 = a + b - 1
-2 = a - b - 1
a + b = 17
a - b = -1 .......-> a = b - 1 ........ a = 9 - 1 = 8
(b - 1) + b = 17
2b - 1 = 17
2b = 18 .......-> b = 18/2 = 9
Answer:
-30 or 2 i dunno.
Step-by-step explanation:
The answer is option
d. congruent by sas
DB=DC(given)
DF=DF(common)
angle FBD= angle FCD( both 90°)
so d is correct...
