MCAS 2002, 10th Grade Math, Questions 37 to 40
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Question #37
Aircraft design engineers use the formula
to determine the
safe landing speed of aircraft where
V _ safe landing speed in feet per second
L _ gross weight of the aircraft in pounds
C _ coefficient of lift
S _ wing surface area in square feet.
What is the approximate safe landing speed for an aircraft with a gross weight
of 9000 pounds and a wing surface area of 225 square feet, when the coefficient
of lift is 2.8?
A. 4 feet per second
B. 110 feet per second
C. 414 feet per second
D. 22,000 feet per second
Question #38
On January 1, 2000, a car had a value of $15,000. Each year after that, the car’s
value will decrease by 20 percent of the previous year’s value. Which expression
represents the car’s value on January 1, 2003?
A. 15,000(0.8)3
B. 15,000(0.8)4
C. 15,000(0.2)3
D. 15,000(0.2)4
Question #39
Which of the following equations represents a line that is parallel to the line
4x - 2y = 8 and passes through the point (0, -8)?
A. 2x + 7 = -4
B. 2x - y = 8
C. x - 2y = 8
D. x - 2y = 16
Question #40
What is the effect on the circumference of a circle if the circle’s radius is doubled?
A. The circumference is multiplied by 2.
B. The circumference is multiplied by 4.
C. The circumference is multiplied by 8.
D. The circumference stays the same.
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