A photograph measuring 10cm by 4cm is mounted on a rectangular cardboard leaving a margin of 3cm all around. A. what is the area of the photograph?

b. what is the area of the cardboard?

c. what is the area of the cardboard is not covered by the photograph?​

What are fructose and glucose an example of?

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

Is a chemical message sent by another individual.