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Which of the following is the length of the unknown leg of a right triangle that has one leg length of 10 feet and a hypotenuse of 24 feet? (Round to the nearest tenth.)

A. 21.8 feet

B. 25 feet

C. 13.6 feet

D. 17.7 feet

Answer Explanation:

Let the unknown length of the x. The resulting triangle is shown below.

We use the Pythagoras theorem as follows to find the unknown value of x as:

 

Thus, the value of unknown side of the triangle is 21.8 feet.

Therefore, the Correct Answer is A.

More Questions on TEAS 7 Math

  • Q #1: Solve for A in the equation below. Diagram:  

    A. A = t(kr+P)

    B. A = (kr+P)/t

    C. A = P-kr/t

    D. A = kr-t/P

    Answer Explanation

    P-At=-kr

    Subtract P on both sides

    P-P-At=-kr-P

    -At=-kr-P

    Divide both sides by -t

    -At/-t=(-kr-P)/-t

    A=(kr+P)/t

  • Q #2: A child has collected 100 pennies, 90 nickels, 50 dimes, and 5 quarters. Which of the following charts accurately organizes the number of coins? Chart 1 Chart 2 Chart 3 Chart 4

    A. Chart 1

    B. Chart 2

    C. Chart 3

    D. Chart 4

    Answer Explanation

    C organizes the collection correctly.

  • Q #3: Which of the following is the appropriate unit of a measure to express the weight of a mobile phone?

    A. Liter

    B. Milliliter

    C. Gram

    D. Milligram

    Answer Explanation

    Here, we are required to find the unit of measuring mass. The SI unit of mass is kilogram but other derived units are grams, milligrams, microgram and more.

    A kilogram is a large quantity for measuring heavier objects but grams can used to measure small and light objects such as the mass of the mobile phone. Therefore, gram is the appropriate unit for measuring weight of a mobile phone.