Statistical control is a. a way of equating subjects on paper that are actually not equal b. the same as randomization c. generally preferable to experimental control d. All of these are true.

Ineed me i stuck and i don’t want to get it wrong

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.