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Which of the following is the best estimate of the number of centimeters (cm) in 10 yards? (Note: 1 yard=3 feet; 1 foot =12 inches; 1 inch =2.54 cm)

A. 720 cm

B. 880 cm

C. 960 cm

D. 914 cm

Answer Explanation:

Therefore, the Correct Answer is D.

More Questions on TEAS 7 Math

  • Q #1: Which of the following is the length of the unknown leg of a right triangle that has one leg length of 5 feet and a hypotenuse of 17 feet? (Round to the nearest tenth.)

    A. 18 feet

    B. 14.4 feet

    C. 9.8 feet

    D. 16.2 feet

    Answer Explanation

    We are asked to find the one of the lengths of a right-angled triangle, we use the Pythagoras theorem to find the unknown length.

    First, we label the triangle as below and let the unknown length be x.

    Then, we apply the Pythagoras theorem to find the value of x as:

    We take square-root on both sides

    The value of the unknown length is 16.2 feet.

  • Q #2: The American with Disabilities Act (ADA) requires that the slope of a wheelchair ramp be no greater than 1:12. Which of the following is the minimum length of a ramp needed to provide access to a door that is 5.2 feet above the sidewalk?

    A. 52 feet

    B. 148 feet

    C. 32.2 feet

    D. 62.4 feet

    Answer Explanation

    In this problem slope represents the change in height above sidewalk to change in length of the ramp.

    From the definition of slope

     

    Letting x to be the minimum length of the ramp, then

    Substituting with the known value of slope

    Cross-multiply to find the value of x

    Thus, the minimum length of the ramp needed is 62.4 feet to access to a door that is 5.2 feet above the sidewalk.

  • Q #3: Which of the following is the best approximation of 4 times the positive cube root of 23?

    A. 12.7

    B. 11.4

    C. 16.2

    D. 96.7

    Answer Explanation