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Answer:
-1
Explanation:
The given equation can be written as
-3x +y^2 +2y +1=b+1
-3x +(y+1)^2=b+1
(-3x-b)+ (y+1)^2=1
This is to be compared with (x-a)^2 + (y-b)^2=c^2
where (a,b) is the center, and c is the radius of the circle.
Thus, we get y=-1, and this is our answer.
Answer:
192.168.228.0 255.255.255.224
Explanation:
192.168.228.0 255.255.255.128
subnet mask: defines the host and the network part of a ip
CIDR notation : is the shortened form for subnet mask that uses the number of host bits for defining the host and the network part of a ip
For example: 192.168.228.0 255.255.255.128 has CIDR equivalent of 192.168.228.0\25
To have atleast 20 hosts
20 ≤ (2^x) -2
x ≈5
with 5 host bits, we have 2^5-2 = 30 hosts per subnet
and 2^3 = 8 subnets
To get the subnet mask, we have 3 network bits
1110000 to base 10 = 2^7 + 2^6 +2^5= 224
192.168.228.0 255.255.255.224
