The vertex is at (2, 5).

To find the vertex, we first find the axis of symmetry; this is given by

x = -b/2a

For our equation, b = -16 and a = 4:
x = -(-16)/2(4) = 16/8 = 2

We substitute this back into our equation:
y = 4(2)² - 16(2) + 21 = 4(4) - 32 + 21 = 5

Therefore the vertex is at (2, 5).

8 0

3 years ago

Estimation: Maria and Connor are doing yard work for a neighbor. They make a total of $597.56. Since Connor works more hours th

FromTheMoon [43]

Connor made (in whole) $484.0236 moolahs

6 0

3 years ago

In what ways does algebra act as a tool to improve communication? How does algebra affect how people can learn from each other?

Andreyy89

Answer: Algebra acts as a tool to improve communication because much like learning a new language, you have to take baby steps before you can fully get it. This can improve communication because you're learning something new with the help of others.

4 0

3 years ago