HELP ASAP
John studies for a test. The amount of time that he studies will affect the score on his next test. Identify the independent variable.
A. The independent variable is where John studies for his test.
B. The independent variable is the number of notes that John took during class.
C. The independent variable is the amount of time that John studies.
D. The independent variable is John's score on the test.

The production line where you work can assemble 5 appliers every 30 minutes at this rate how long should it take the line to assemble 125 amplifiers

What is the rotational symmetry of a wheel

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2