AnsStep-by-step explanation:
.2
Do 62 minus 3x-1. Whatever you get for that is the answer
#9
99 cent for 100 paper
4.29 for 500 paper
multiply 100 and 5=500
so now multiply .99 and 5=4.95
the better deal would be $4.29 for 500 paper
Answer:
Ikr, it annoys me. I can't even get a good answer to my questions either! ITS SO ANNOYING.
Answer:
A and D.
Step-by-step explanation:
(sin(x-y))/(cosxcosy)
(sinxcosy - cosxsiny) / cosxcosy
= sinx / cosx - siny/cosy
= tanx - tany.
So A is an identity.
B. (sin(x+y))/(sinxsiny)
= sinx cosy + cosx siny / sinxsiny
= cosy/siny + cosx/sinx
= 1/tany + 1/tanx which is not identical with 1-tanxtany.
C. tan ( x - pi/4) = ( tan x - 1) / (1 + tanx) : - not identical to tanx - 1.
D. cos( x + (pi/6) = cosxcos(pi/6) - sinxsin(pi/6)
= 0.866cosx - 0.5sinx
- sin(x - (pi/3) = -(sinxcos(pi/3) - cosxsin(p/3))
= - (0.5sinx - 0.866cosx0
= 0.866cos x - 0.5sinx.
which are identical.
