Answers:
where 'a' cannot be zero.
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Explanation:
The vertex is (h,k)
The x coordinate of the vertex is h which is found through this formula
For example, if we had the quadratic 
, then we'll plug in a = 3 and b = -6 to get: 
------------
To find the value of k, we plug that h value into the original standard form of the quadratic and simplify.
It's interesting how we end up with the numerator of 
which is similar to 
found under the square root in the quadratic formula. There are other ways to express that formula above. We need 
to avoid dividing by zero. The values of b and c are allowed to be zero.
Answer:
<u>9n^2+33n+30</u>
Step-by-step explanation:
I just did the math and got this answer!!
HOPE IT HELPS!!!!
:):):):)
Answer:
110cm square
Step-by-step explanation:
Area of trapezium(regardless whatever trapezium)=
1/2 (a+b)(height)=1/2 (9+13)(10)=110cm square
Answer:
option (b) df = 1, 24
Step-by-step explanation:
Data provided in the question:
levels of factor A, a = 2
levels of factor B, b = 3
Subjects in each Sample, s = 5
n = 5 × 3 × 2 = 30
Now
df for Factor A = a - 1
= 2 - 1
= 1
df for Factor B = b - 1
= 3 - 1
= 2
df for Interaction AB = ( a - 1 ) × ( b - 1 )
= 1 × 2
= 2
df for Total = n - 1
= 30 - 1
= 29
df for error = 29 - 5
= 24
Hence,
df values for the F-ratio evaluating the main effect of factor A is 1, 24
The correct answer is option (b) df = 1, 24
