Đề thi Olympic Tiếng Anh lớp 9 vòng 2 năm 2013 - 2014

A state game warden has been observing deer during a particularly severe winter. She recorded that 14 of the 96 deer she observed throughout the state appeared to be suffering from malnutrition. The state has an estimated deer population of 600,000. Based on her observations, approximately how many deer would she predict are suffering from malnutrition?

In the figure, lines A and B are straight and parallel to each other. Which angles must be congruent to ∠1?

Ms. Patrick wrote the fractions 0.75/1 , 1.5/2 , 3/4 , 9/12 on the board. Then she asked Sabrina to describe the relationship among the numbers. Which statement describes the relationship among the numbers?

The table shows how many pages are left to copy at different times. How many pages are left to copy at the end of 40 seconds?

An economist used the equation y = 0.05x2 + 3.63x + 37.68 to model changes in consumer prices. For a given value of y, which method should be used to solve the equation for x?

Jeremy works at a bookstore. He gets paid $30 per day and $2 for every book he sells. He determines his total daily pay, D, with the equation D = 30 + 2b, where b is the number of books he sells On Monday, Jeremy's total daily pay is $50. On Tuesday, Jeremy's total daily pay will change to $35 per day and $2 for every book he sells. Which statement is true about Jeremy's total daily pay on Tuesday?

Ice cream vendors at the county fair gathered data about the various ages of people and their preferences for different ice cream flavors. The data are summarized in the table. And the circle graph represents the flavor preferences for one of the four age groups. Which age group's preferences are represented in the graph?

Which expression is equivalent to 812/83?

Melanie paddled her kayak for 1.5 hours. She paddled 6 miles. How many miles per hour did Melanie paddle?

A sphere had a 6-inch radius (r). What was the volume of the sphere?