Is it true that the point (1,4) in the standard (x,y) coordinate plane is in at most one of the sets A and B?
(1) Set AH the set of all points {x,y) such that 2x + y< 5.
(2) Set 5is the set of all points (x,y) such that y > 3x+ 2.
A lottery box contains 8,000 tickets, each of which is red or blue or green. The box contains twice as many blue tickets as red tickets. The number of green tickets is 20 more than the number of red and blue tickets combined. Which of the following Is the best approximation to the probability that the first ticket randomly drawn from the box will be blue?
A)
B)
C)
D)
E)
What is the median of the numbers in set A?
(1) n is even.
(2) n is less than 7.
If x ≠ 0, for which of the following sets of numbers is the average (arithmetic mean) equal to the median?
A quantity of solution that is 3% salt by volume was mixed with a quantity of solution that is 9% salt by volume to produce a quantity of solution that is 4% salt by volume. How many liters of the 9% solution were used?
(1) The quantity of 3% solution was 5 times the quantity of 9% solution.
(2) The quantity of 4% solution produced was 150 liters.
The sum of the first n positive integers is given by
.
What is the sum of the first 100 positive odd integers?
A)
B)
C)
D)
E)