Which of the following principles of experimental design
reduces errors due to chance by repeating an experiment on
different subjects under different conditions?
O A. Control
O B. Placebo effect
O C. Blindness
O D. Replication
O E. Randomization

12m

step-by-step explanation:

square root means have of a number so have of 3 is 1.5 then multiply it by 8 and you get your answer!

-1/2 +2

step-by-step explanation:

correct answer:

b.(19,-2)

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.