Confuzzled54 Confuzzled54

03-05-2017
Mathematics

contestada

What is the axis of symmetry of the function of -(x+9)(x-21)

Respuesta :

apologiabiology apologiabiology

03-05-2017

expand
-x^2+12x+189

now
the axis of symmetry is -b/2a for ax^2+bx+c

so

-1x^2+12x+189
a=-1
b=12

-b/2a=-12/(2*-1)=-12/-2=6
the axis of summetry is x=6

Answer Link

Otras preguntas

My little brother needs help and tbh I forgot all abt this

Helppppp! What is the value of 5^3i^9

10. Consider the diagram below. First, solve for x, then y.

Your client took a complete physical inventory count under your observation as of December 15 and adjusted the inventory control account (perpetual tory method)

What will change more solid NiCl2 is added

Please give the answers for 5,6,&7. Giving Brainliest to who gets it. GOOD LUCK! :)

given that alpha and beta are roots of the quadratic equation ax²+bx+c=0, show that alpha+beta=-6÷a and alphabeta=c÷a

What is the value of xin the solution to this system of equations? y + 2x = -1 y =1/2x+4

what would happen without satellites???

Which process illustrates a feedback mechanism in plants?* (1) Chloroplasts take in more nitrogen, which increases the rate of photosynthesis. O (2) Chloroplast