The American with Disabilities Act (ADA) requires that the slope of a wheelchair ramp be no greater than 1:10. Which of the following is the minimum length of a ramp needed to provide access to a door that is 2.3 feet above the sidewalk?
A. 23 feet
B. 14 feet
C. 32 feet
D. 30 feet
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Math
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Q #1: 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.
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Q #2: Which of the following is the value of x in the equation below? (left|3x-7 ight|-13=2)
A. x = 21/3, x=22/3
B. x = 7/3, x=9/3
C. x = 15/2, x=9/3
D. x = 22/3, x=-8/3
Answer Explanation
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Add 13 to both sides to isolate the absolute value term, resulting in ( left|3x-7 ight|= 15)
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Consider two cases:
- When (+(3x-7)) is positive, solve for x to get (3x = 15 + 7) then (3x=22) (finally x=frac{22}{3})
- When (-(3x-7)) is negative (but the absolute value makes it positive). Solve for x to get (-3x = 15 - 7) then (-3x=8) (finally x=- frac{8}{3})
So, there are two possible solutions: (x=frac{22}{3} or x=- frac{8}{3})
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Q #3: Which of the following is the decimal form of 235.8%?
A. 2358
B. 23.48
C. 0.2358
D. 2.358
Answer Explanation
