HESI A2 Quizlet Math - Nurselytic

Correct Answer: A

Rationale: The correct answer is A: 0.09%.
To convert 0.0009 to a percentage, move the decimal point four places to the right and add a percentage sign.
Therefore, 0.0009 is equal to 0.09%.
Choice B (9%) is incorrect as it represents 0.09 without the decimal point adjustment.
Choice C (0.01%) is incorrect as it represents 0.0009 with one less zero.
Choice D (0.90%) is incorrect as it represents 0.9 not 0.0009.

Correct Answer: C

Rationale: Reducing the rat's speed by 50% means it will take twice as long to finish the maze. Since the original time is 3 minutes, doubling that gives 6 minutes.
Therefore, the total time will be 6 minutes, making the correct answer C.
Choice A (3 minutes) is the original time it takes the rat to finish the maze, not the time with the backpack.
Choice B (4 minutes) is not correct as reducing the speed by 50% would double the original time.
Choice D (1.5 minutes) is incorrect as halving the time is not the effect of reducing the speed by 50%.

Correct Answer: C

Rationale:
To determine the cost of building a fence around the square lawn, first calculate the length of one side by finding the square root of the area: √62500 = 250 meters (length of one side). The perimeter of a square is four times the length of one side, so the perimeter of the lawn is 4 * 250 = 1000 meters.
To find the cost of the fence, multiply the perimeter by the cost per meter: 1000 meters * $5/meter = $5000.
Therefore, the correct answer is $5,000, which corresponds to choice C.
Choice A ($4,000), choice B ($4,500), and choice D ($5,500) are incorrect as they do not accurately calculate the cost based on the given information.

Correct Answer: C

Rationale:
To add mixed numbers, convert them to improper fractions. 7 2/3 = 23/3 and 5 5/12 = 65/12. Adding them results in 233/12. Converting this improper fraction back to a mixed number gives 19 5/12, which simplifies to 13 1/12.
Therefore, the correct answer is 13 1/12.\n
Choice A (11 1/12) is incorrect as it does not represent the correct sum of the given mixed numbers.
Choice B (12 1/4) is incorrect as it is not the result of adding 7 2/3 and 5 5/12.
Choice D (14 1/6) is incorrect as it is not the correct sum of the provided mixed numbers.

Correct Answer: C

Rationale: In Roman numerals, XL represents 40, and IV represents 4. When XL (40) is combined with IV (4), it forms XLIV, which corresponds to the number 44.
Therefore, the correct answer is 44.
Choice A (34) is incorrect as it does not consider the value of XL and IV.
Choice B (54) is incorrect as it miscalculates the value of XL.
Choice D (24) is incorrect as it does not account for the value of XL.