Which of the following fractions is the largest?
Answer(s): D
Find a common denominator for the fractions. In this case, 80 work for all the fractions.Convert all the fractions: 2/5 = 32/80; 3/8 = 30/80; 7/10 = 56/80; and 13/16 = 65/80.Comparing the fractions, you can see that 13/16 (65/80) is the largest fraction.
If 2 + x 4, what is the value of x?
Answer(s): B
Solve as you would solve for any unknown. 2 + x 4 = 2 + x 2 4 2. Or, x 2. To check your answer, substitute 2 for x.2 + 2 4. True, so the answer is correct.
If a circle has a radius of 12 feet, what's its circumference most nearly?
Answer(s): C
Circumference equals × diameter, and diameter is equal to two times the radius. Or C = × d, and d = 2r. C = × 24.If you round to 3.14, the answer is about 75.36 or about 75 feet.
An aquarium measures 16-inches long × 8-inches deep × 18-inches high.What's its volume?
Answer(s): A
Volume equals length × width × height (V = lwh). 16 × 8 × 18 = 2,304 cubic inches.
Triangle ABC (shown above) is a(n) __________.
In an equilateral triangle, all sides are equal, and all angles are equal.
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