Answer:
Area = 24.75 sqr units
Step-by-step explanation:
You will need these formulas:
Midpoint =
Area = b x h
Let us treat CD as the base. Find the length of the base with the distance formula. Use the coordinates for points C & D.
The base is .
The height is the distance between point E and the midpoint of line CD.
Midpoint of CD = = (, )
Use the distance formula to find the height.
Find the area with the two distances that were found.
Area =
Area =
Area = 24.75 sqr units
Answer:
Step-by-step explanation:
there is no answer for this...
Answer:
a-bi
Step-by-step explanation:
If a quadratic equation lx^2+mx+n=0 has one imaginary root as a+bi then the other root is the conjugate of a+bi = a-bi
Because we have l, m and n are real numbers and they are the coefficients.
Sum of roots = a+bi + second root = -m/l
When -m/l is real because the ratio of two real numbers, left side also has to be real.
Since bi is one imaginary term already there other root should have -bi in it so that the sum becomes real.
i.e. other root will be of the form c-bi for some real c.
Now product of roots = (a+bi)(c-bi) = n/l
Since right side is real, left side also must be real.
i.e.imaginary part =0
bi(a-c) =0
Or a =c
i.e. other root c-bi = a-bi
Hence proved.
Answer:
3rd one I believe
Step-by-step explanation: