Answer:
Step-by-step explanation:
area = πr² = 64π km²
r² = 64
r = 8 km
Answer:
B
Step-by-step explanation:
Answer:
b. a unique real solution
Step-by-step explanation:
A quadratic equation ax² + bx + c = 0 ,
Has two distinct real roots,
If discriminant,
Has two equal real roots,
If D = 0,
Has two imaginary roots or no real roots,
if D < 1,
Here. the given qudratic equation,
By comparing,
a = 4, b = 32, c = 64,
Hence, the equation has two equal real roots or a unique real solution.
i.e. OPTION 'b' is correct.
Answer:
C
Step-by-step explanation:
The easiest way to solve this would be to find the difference between the numbers. We can do to find the difference of . We can then make sure this is true for the rest of the sequence by adding 6 to each number.
Now that we've verified that this is true, we know the answer is C