A prolonged heat spell in the town of Blacksburg causes an increase in the use of air conditioners during the summer months. The average consumption of electricity rises to 980 kWh per month. Calculate the percent change in electricity use.

For a study comparing leisure activities of physical education students with those of other students, a researcher has randomly selected a ten percent sample of physical education students and one percent sample of non-physical education students for a list of students. what kind of sampling technique is this?

With my drivers ed and i’ll mark you brainliest + free 10 points adjusting the driver's seat is a. only necessary when you purchase a new vehicle b. usually enough to make up for an arm or leg injury c. not necessary if you're only driving a few miles d. not just for comfort

Amanda, a forensics expert, has been called in to examine blood samples and prints found at a crime scene. she conducts a thorough analysis of the matter using her expertise and knowledge. she then prepares forensic reports to support the police investigation. what type of evidence has amanda provided in this situation? a. real evidence b. testimonial evidence c. direct evidence d. circumstantial evidence