Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y = negative 5 x squared minus 4 x + 1
a.
D: all real numbers
R: y less-than-or-equal-to 1.8
c.
D: x greater-than-or-equal-to 0
R: all real numbers
b.
D: all real numbers
R: y greater-than-or-equal-to 1.8
d.
D: all real numbers
R: y less-than-or-equal-to 0.2

use google you idiot omg you're so annoying

step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

i belive those are the ones that are under 90 degreese.