Đề thi Olympic Tiếng Anh lớp 11 vòng 12 năm 2013 - 2014

When John exercises, he walks at an average rate of 1.75 miles every half hour. At this rate, how many miles can John walk in 3 hours?

Simplify the expression: (−5x³)(3x⁴)

Which equation represents the function shown in the accompanying graph?

A meteorologist drew the accompanying graph to show the changes in relative humidity during a 24-hour period in New York City. What is the range of this set of data?

The measure of the vertex angle of an isosceles triangle is 75°. What is the measure of one of the base angles of the triangle?

The food area of a small shopping mall is located between three stores. Each of the three stores is a square as shown above. Which is the closest approximation of the length of a wall of Store 3?

The zoomster function z used in space flight engineering is defined as z(q) = 4q + 1/2. If, for some number u, z(u + 1/2) = 1/2, what is the value of u?

The flight paths of two Thunderbird jets are plotted on a Cartesian coordinate plane, and the equations of the jets' flight paths are represented by y = 2x + 3 and y = 0.5x . The best approximation of the intersection of the flight paths is

Which expression is equivalent to the complex fraction ?

Angela's house is 3 miles north and 6 miles east of the center of town. Cathy's house is 2 miles south and 5 miles west of the center of town. What is the shortest distance between the girls' houses? Round the answer to the nearest whole mile.