Solve each system using substitution: 7x-2y=1 2y=x-1

Which of the following is not a benefit of improve cardio respiratory fitness

Martin's economics teacher puts a grade of A for an average of 90 or more; of B for 80 or more. Of the four exams of the course, Martin has presented the first with a grade of 82; the second, gets a grade of 75; and the third with a grade of 71.

Out of 80 students, 20 are girls. What is the ratio of girls to the total number of students surveyed

The population of Greenville is currently 50,000 and declines at a rate of 1.2% every year. This models:

The radius of a basketball is about 3.6 times greater than the radius of a tennis ball. How many times greater is the volume of a basketball and a volume of a tennis ball? (Note: The volume of a sphere is V=4/3 (3.14159) r3

What is the mean absolute deviation of this data set? 26, 31, 32, and 39

If you are going 100 mph how far will you go in 1 hr?

What is 171 : 3 in unite rate

There are 20 students on the schools student council. A special homecoming dance committee is to be formed by randomly selecting seven students from student council. How many possible committees can be formed?

If a student is chosen at random, find the probability of getting someone who is a man or a woman. Round your answer to three decimal places. 0.195 0.923 1 0.805