Anwer is B...... . ........
I use a website called desmos.com when I need to graph a function. Heres a picture of what it should look like.
<u><em>Answer: 1/11 and 0.09=0.10</em></u>
Step-by-step explanation:
subtract by the numbers. subtract it's to take away one number from to another from the difference between the numbers.
5-4/11
5-4=1
=1/11
You can also round up to the nearest hundredths is 0.10.
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Carry out the mult.: f(x) = -[x^2 - 21x + 9x - 189]
Combine like terms: f(x) = -[x^2 - 12x - 189]
Eliminate the brackets [ ]: f(x) = -x^2 + 12x + 189
Identify coefficients a, b and c: a= -1, b=12, c=189
The equation of the axis of symmetry is x = -b/(2a), which here equals
x = -(12)/[2(-1)], or x = 6
This is also the x-coordinate of the vertex. Plug x=6 into the original equation to calculate the y-coordinate.
