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If a system of linear equations has at least one solution, then the system is called consistent, otherwise it is called inconsistent. Solve the system of linear equations (1) by using method of elimination as studied earlier Multiplying the first equation by a 2 and the second equation ..

A study that involves no researcher intervention is called __________. => an experimental study or a non involvement study or a quasi-experimental study or an observational study..

The histogram shows the number of hours students spend studying in a day. Find the number of students who study less than 3 hours a day. => 2 or 3 or 4 or None of the above..

Tim and Chris spend the same amount of time studying for exams. If Tim spends 6.2 hours a day studying, then how many hours a day does Chris spend studying? => 6.20 hours or 6.02 hours or 6 hours or 7 hours..

In a survey, 40% of the students interviewed said that they study in the weekends. If 9 students are selected at random, then find the probability that exactly 3 of these students study in the weekends. => 0.16 or 0.33 or 0.251 or 0.40..

Which of the following statement(s) is/are correct? I. Observational study usually occurs in a natural setting. II. A variable that interferes with other variables in the study is called a confounding variable. III. The disadvantage with an experimental study is the Ha..

The line graph shows the hours of study and test scores of 8 students. Suppose the trend for the scores continues. Use the line graph to predict the test score of a student who studied for 27 hours. => about 95 or about 75 or 84 or about 80..

In a class, 50% of the students play basketball, 30% study, and 20% will go to a movie on the weekends. If a sample of 5 students are randomly selected, then find the probability that three play basketball, one studies and one will go to a movie. => 0.15 or 0.6 or 0.054 or 0.024..

After finishing swimming at 4:30 p.m., Paul takes a break of 20 minutes before he starts studying. At what time does he start studying? => 5:30 p.m. or 6:20 p.m. or 5:15 p.m. or 4:50 p.m...

John plans to study, watch TV and play football on a Sunday. In how many ways can he choose and arrange the activities? => 2 or 6 or 3 or 1..