13x-8y=12
Use the slope intercept form to solve the problem.
y = mx+b when the slope is m and the y-intercept is b.
Slope: 13/8
Y-intercept: -3/2
Answer:
total cost divided by no.of pieces =cost of each piece
so
10/8
=1.25
therefore option B) $1.25 is the answer...
AD + DG = AG.
If DG is twice as long as AD, then DG is 20.
Add DG and AD together and you can find that AG is 30.
1/sin^2x-1/tan^2x=
1/sin^2x-1/ (sin^2x/cos^2x)<<sin tan= sin/cos>>
= 1/sin^2x- cos^2x / sin^2x
= (1- cos^2x) / sin^2x <<combining into a single fraction>>
sin^2 x / sin^2x <<since 1- cos^2 x sin^2 x
=1
this simplifies to 1.