Does the parabola open up or down? Is the y-coordinate of the vertex a minimum value or a maximum value? f(x) = 5x^2-x

it opens up and the y coordinate of the vertex is a minimum value!

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2