What value of b makes the trinomial below a perfect square x^2-bx+36?

-12 and 12.

Step-by-step explanation:

The given trinomial is

A trinomial is a perfect square trinomial if

      ....(1)

In the given trinomial A=1, B=-b and C=36. Substitute these values in equation (1).

Taking square root on both sides.

Therefore, the possible values of b are -12 and 12.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

step-by-step explanation: