When more than one variable in an experiment is changed at a time, the scientist a. made a systematic error that needs to be corrected. b. cannot tell which change produced the results. c. cannot accurately measure both variables at the same time. d. needs to conduct more trials in order to get conclusive results.

Provide one difference between an incan ruler and a moche ruler in their ruling methods

Which of the following statements is not true about regions? a.) regions have fixed boundaries that are determined by the region's inhabitants.b.) a region can be defined by physical characteristics, such as climate, landform, and vegetation.c.) regions can change over time.d.) a region can be defined by human characteristics, such as language, government, and economic activity.e.) the same location can be considered part of multiple regions.

Lydia finds a car that costs 13,000, and she has 2,500 saved for a down payment. if she qualifies for a 5% interest rate, how much will the interest be calculated on? 13,000? 12,000? 15,500? 10,500? in : )