4 (e)
sin^8 x - cos^8 x
= (sin^4 x + cos^4 x)(sin^4 x - cos^4 x)
= (sin^4 x + cos^4 x)(sin^2 x - cos^2x)(sin^2 x +cos^2 x)
= (sin^4x + cos^4 x)( sin^2 x- cos^2 x)
Sorry I cant do 4 (d).
Answer:
False, It was till Pack 5 it was going up 3 every pack but at 5 it went up 13 cookies.
Okay, so with the link we can tell this:
flour and baking soda are equal ratios
salt is one half the ratio of flour/baking soda
A: correct
flour and baking soda as equal ratios
B: incorrect
salt is at an incorrect ratio to flour
C: correct
salt is at a correct ratio to baking soda
D: incorrect
salt is at an incorrect ratio to baking soda
E: correct
baking soda is at a correct ratio to salt
answers: A, C , E
