In a local town, 4/5 of the voting-age population is registered to vote. If 7/8 of the registered voters voted in the election
1 answer:
You might be interested in
ANSWER
(-1,2)
EXPLANATION
The given quadratic expression is:
The coefficient of the quadratic term is already 1.
So we add and subtract the square of half the coefficient of x.
We factor the first three terms to obtain
This is now in the form:
where (h,k) which is equal to (-1,2) is the vertex.
By using the definition of the inverse cosine function, we will see that:
<h3>How to complete the expression?</h3>
We have the expression:
Remember that if:
Then, in what do we need to evaluate the cosine function to get an output equal to zero?
Then:
Then we can replace the question sign with a 2.
If you want to learn more about the cosine function, you can read:
its ither a or b cant tell but im more leanyent to b SOO MY FINAL AWNSER IS B
