Marie has been hired to paint the walls and ceilings of three rooms.. If a gallon of paint covers between 250 and 300 square feet, what is the best estimate of the number of whole gallon
Trang 1Đề thi Olympic Tiếng Anh lớp 10 vòng 1 năm học 2013 - 2014
Đề số 1
Câu 1 Which of the following is a graph of y ≤ 5x?
E None of them
Câu 2 Personal computers are given a final inspection after being built Three types of
defects are identified: critical, major and minor The chart above shows the results of these inspections Computers with either critical or major defects are deemed unusable and are destroyed What percentage of computers produced are deemed usable?
Trang 2Câu 3 Given that ∠ABC is a right angle, what is the measure of ∠DBE?
Câu 4 Use the map above to answer the question that follows If you average 55 miles
per hour, about how long will it take to drive from Grady to Minden?
A 10 to 20 minutes
B 25 to 35 minutes
C 40 to 50 minutes
D More than 55 minutes
E None of them
Câu 5 Which one of the following objects is most like a geometric plane?
Trang 3A Tabletop B Water glass C Ice cream cone
D Shoe box E None of them
Câu 6 Jake went for a 5-mile run When he started the run, his watch read 10:05 When
he finished the run, it read 10:32 What was his average lap time?
A 27 minutes per mile B 5 minutes, 4 seconds per mile
C 32 minutes per mile D 5 minutes, 24 seconds per mile
E None of them
Câu 7 What is the MEDIAN height of the five office buildings shown in this list?
A 157 feet B About 432 feet C 440 feet
D 517 feet E 368 feet
Câu 8 A king-size water-bed mattress whose dimensions are 7 feet by 6 feet by 6 inches
is filled with water If the weight of a cubic foot of water is 45 pounds, how much will the water in the mattress weigh?
A 607.5 pounds B 945 pounds
C 1,890 pounds D 11,340 pounds
E 22,680 pounds
Câu 9 Marie has been hired to paint the walls and ceilings of three rooms Room 1 is 12
feet by 12 feet, room 2 is 10 feet by 15 feet and room 3 is 10 feet by 12 feet All three rooms are 10 feet high If a gallon of paint covers between 250 and 300 square feet, what
is the best estimate of the number of whole gallons of paint that Marie needs?
Trang 4Câu 10 The graph above shows the amount of rustproof paint required to paint metal
tanks made by Tanks-R-Us About how much paint will be required to paint a 1500-gallon tank?
A 1.5 gallons B 5 gallons
C 10 gallons D 12 gallons
E None of them
Đề thi số 2
Câu 1 Which of these graphs represents a function?
Trang 5E None of them
Câu 2 If a circular pool has a diameter of 20 feet, what is the area of the pool to the
nearest square foot?
A 31 square feet B 1256 square feet
C 63 square feet D 628 square feet
E 314 square feet
Câu 3 In the house plan shown above, figure FEB is similar to figure FDA What is the
length of segment AD?
A 12 feet B 20 feet C 30 feet D 35 feet E 40 feet
Câu 4 What is the area of a circle with d = 8x - 6 ?
A (16x - 12)π
B (28x + 9)π
C (16x2+ 12x + 9)π
D (16x2- 24x + 9)π
E (16x2 + 24x - 9)π
Trang 6Câu 5 Lou would like to exchange 354 British pounds for U.S dollars If 1 U.S dollar is
equal to 0.59 British pounds, how many U.S dollars will Lou receive?
A $145.14 B $208.86 C $600.00 D $863.41 E $900.00
Câu 6 What is the solution of the system of linear equations above?
A (0,15) B (5, 5) C (15, 45) D (10, 25) E (3, 9)
Câu 7 The average high temperatures for a city during the month of October are shown
in the table above What is the mean of the average high temperatures?
Câu 8 What is the equation of the line passing through the points (1, 2) and (3, 4)?
A y = x + 1 B y = x - 1 C x + y = 1
D x + y = 2 E x + y = 3
Câu 9 The measure of an angle in degrees is 3x Which of these represents the measure
of its supplement?
A 3x + 90 B 3x + 180 C 90 - 3x D 180 - 3x E 180 + 3x
Trang 7Câu 10 Peter uses a 12-foot ladder to wash windows at his house What is the distance (x)
from the base of the wall to the bottom of the ladder?
Đề thi số 3
Câu 1 A circle’s center is at (2, –3), and one point on the circle is (3, 5) What is the
length of the circle’s radius?
Câu 2 For what positive values of n is1/n< n?
A 1 and values greater than 1
B only values greater than 1
C only positive values less than 1
Trang 8D all positive values
E None of them
Câu 3 A scientist is researching the amount of water used in 6 towns She organizes her
data as a scatter plot comparing each town’s population and water usage measured in gallons Using the same 6 data points, which graph shows the line of best fit?
E None of them
Câu 4 The chart shows temperature readings taken by a weather balloon as it rose into
the air Based on the data in this chart, which function relates altitude, a, in kilometers, to temperature, T, in degrees Celsius?
A T = –6.5a + 30 B T = 6.5a + 30 C T = a + 1
D T = a – 6.5 E T = 2a – 6
Trang 9Câu 5 The figure shown is a large unpainted cube made of 27 smaller cubes If the entire
surface of the large cube is painted, how many of the small cubes will have paint on exactly two sides?
Câu 6 The table lists the mean price of a gallon of gasoline during each month over one
six-month period Which graph should be used to show the change in the price of a gallon
of gasoline over time?
A line graph B circle graph C box-and-whisker graph
D histogram E None of them
Câu 7 Fun Times Ice-Cream Shop sells a large ice-cream cone for $2.50 and a small
ice-cream cone for $1.75 To make a profit, the store needs to sell $700 worth of ice-cream cones If l is the number of large cones sold and s is the number of small cones sold, which inequality shows the numbers of large and small cones that need to be sold to make a profit?
A 2.50l +1.75s ≥ 700 B 2.50l +1.75s ≤ 700 C 1.75l + 2.50s ≥ 700
D 1.75l + 2.50s ≤ 700 E 1.7l + 1.50s ≤ 70
Trang 10Câu 8 Scientists have discovered that a person’s height is related to the length of the
person’s tibia (shinbone) The graph plots the height and tibia length for ten individuals Based on an estimated line of best fit, which of the following is the best prediction of a man’s height if his tibia is 15 centimeters long?
A 60 centimeters B 140 centimeters C 110 centimeters
D 90 centimeters E 160 centimeters
Câu 9 James hears a classmate say that all trapezoids have congruent base angles Which
figure could James use to show that his classmate’s statement is incorrect?
E None of them
Trang 11Câu 10 What is the solution to the equation 5x + 7x + 14 = 4x – 18
A x = -5 B x = -1 C x = -2 D x = -3 E x = -4