If we were to foil
after experieence
we know
ax²+bx+c=0
and
in form
(ax+b)(cx+d)=0
if we expand it, we get
acx²+bcx+adx+bd=0
or
(ac)x²+(bc+ad)x+(bd)=0
compare to
ax²+bx+c=0
we notice that the middle terms (x terms) are
b=(bc+ad)
so
in form
(2x-1)(1x+5)
b=bc+ad=(-1*1+2*5)=-1+10=9
b=9
or you could just expand it
Answer:
(a variation of) vertex form
Step-by-step explanation:
For vertical scale factor "a" and vertex (h, k), the vertex form of the equation for a parabola can be written as ...
y = a(x -h)^2 +k
If k is subtracted from this equation, an alternate form is ...
y -k = a(x -h)^2
This latter version of vertex form is the form your equation has, where ...
Answer:
See below ~
Step-by-step explanation:
<u>Sin A</u> : opposing side of ∠A / hypotenuse
<u>Sin C</u> : opposing side of ∠C / hypotenuse
<u></u>
<u>Cos A</u> : adjacent side of ∠A / hypotenuse
<u></u>
<u>Cos C</u> : adjacent side of ∠C / hypotenuse
Answer:
Step-by-step explanation:
Parallel slope = -8
Perpendicular slope = 1/8
