Answer:
8
Step-by-step explanation:
AC and BC are the same, so both equal 6
6+6 is 12
Subtract 12 from 20
20-12=8
CD is 8
Answer:
Step-by-step explanation:
Given
Required
The vertex
We have:
First, we express the equation as:
Where
So, we have:
--------------------------------------------
Take the coefficient of x: -1
Divide by 2: (-1/2)
Square: (-1/2)^2
Add and subtract this to the equation
--------------------------------------------
Expand
Factorize
Factor out x - 1/2
Compare to:
Hence:
Answer:
fjkn QLJKFnclqnmjfn,msfjv
Step-by-step explanation: