Which of these is an example of a literal equation? A. ax - by = k
B. 12 = 9 + 3x
C. 3x - 4y
O D. 6 + 30 = 62
SUBM

What are the percent by mass of copper in penny lab

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Fred is studying a substance that is made out of only one element. this means that