Please help

Question

0

664

4

+113

What real value of t produces the smallest value of the quadratic t^2 -9t - 36?

QuestionsBug Jun 27, 2020

Guest · Answer 1 · 2020-06-27T12:50:26

+1

what is that^ does it mean equal is the queston t=2-9t -36

Guest Jun 27, 2020

+118703

+1

This is a good question. the hat ^ is a common symbol so it is really good that you asked for its meaning.

The hat ^ means 'to the power of'.

so

t^2 means $t^2$

7^2 means $7^2 = 7*7 = 49$

Melody Jun 27, 2020

Melody · Answer 2 · 2020-06-27T12:57:03

What real value of t produces the smallest value of the quadratic t^2 -9t - 36?

Let y=t^2 -9t - 36

This is a concave up parabola. The smallest value of y is the vertex.

Do you know how to find the axis of symmetry

it is just x or in this case t= -b/2a (from the quadratic formula)

The smallest value of y will be ON the axis of symmetry.