PLS HELP ASA NEED DONE BEFORE 1:00 ILL GIVE BRAINLIEST 1) 50% of a certain number is 27, what is the number?

2) What percentage of 100 is 76?

3) What is 50% of 64?

How can you construct perpendicular lines and prove theorems about perpendicular lines

Ascientist studied a population of workers to determine whether verbal praise and/or tangible rewards affect employee productivity. in the study, some workers were offered verbal praise, some were offered tangible rewards (gift cards, presents, and some were offered neither. the productivity of each participant was measured throughout the study by recording the number of daily tasks completed by each employee. which inference might the scientists make based on the given information? a.) the number of daily tasks completed by each employee may influence the dependent variable, which is whether the employee receives verbal praise, tangible rewards, or neither. b.) verbal praise and/or tangible rewards may influence the independent variable, which is the number of daily tasks completed by each employee. c.) verbal praise and/or tangible rewards may influence the dependent variable, which is the number of daily tasks completed by each employee. d.) the dependent variables, which are verbal praise and tangible rewards, may influence the number of daily tasks completed by each employee.

The curved part of the figure is the semicircle what is the best approximation for the area of this figure