D
Because if x=8 and y=3 then 3x and 8y are equal. So if we are trying to find an equal to 40y then you need to find what 40 times y equals first. So, 40x3=120. If we substitute x with 8 and multiply it with 15 then you get 120 so it’s equal.
Answer:
The first of the basic laws of geometric optics is the law of rectilinear propagation of light. It reads: in an optically homogeneous medium the ray of light propagates in a direction.
Answer:
Protein
Explanation:
Protein speeds up chemical reactions by lowering activation energy. It is used to form bones and build muscles. It is made up of an amino group, a carboxyl group, and an R group.
