Which if the following is a consequence of the identity sin 2x=2(sin x)(cos x ) ?
a. sin y = (sin 1/2y)
b. sin 3y= 3( sin 2y)(cos y)
c. sin 4y= 2( sin 2y) ( cos 2y)
d. sin 4y= 4 ( sin 2y) ( cos 2y)
e. sin 8y= 2 ( sin 4y) (cos 2y)

Simplify the expression 10/11(22z) + (a+5) -1

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?