HESI A2
HESI A2 Quizlet Math Questions
Question 1 of 5
The physician orders 60 mg of Augmentin; 80 mg/mL is on hand. How many milliliters will you give?
Correct Answer: C
Rationale: To determine the volume needed, divide the ordered dose by the concentration. 60 mg / 80 mg/mL = 0.75 mL. Choice C is correct as it correctly calculates the volume required. Choice A is incorrect as it is too low. Choice B is incorrect as it's also too low. Choice D is incorrect as it is too high.
Question 2 of 5
A rancher has a herd of different-colored horses in his corral. Ten of the horses are black, six are brown, eight are two-color horses, and three are all white. What percentage of the horses are brown? (Round to the nearest whole number if necessary).
Correct Answer: B
Rationale: To find the percentage of brown horses, we need to calculate the total number of horses first. Total = 10 (black) + 6 (brown) + 8 (two-color) + 3 (white) = 27 horses. Next, calculate the percentage of brown horses: (6 brown horses / 27 total horses) x 100% = 22.22%. Since we need to round to the nearest whole number, the percentage of brown horses is 22%, which is closest to choice B (20%). Therefore, the correct answer is B. Explanation for other choices: A: 15% - Incorrect because the percentage of brown horses is closer to 22%. C: 25% - Incorrect because the percentage of brown horses is not as high as 25%. D: 30% - Incorrect because the percentage of brown horses is lower than 30%.
Question 3 of 5
Which of the following is equivalent to 0.0009?
Correct Answer: A
Rationale: The correct answer is A: 0.09%. To convert 0.0009 to a percentage, you move the decimal point two places to the right. This results in 0.09%, which is equal to 0.0009. Choice B: 9% is incorrect because it represents a value that is 100 times greater than 0.0009. Choice C: 0.01% is incorrect because it represents a value that is 10 times smaller than 0.0009. Choice D: 0.90% is incorrect because it is 10 times greater than 0.0009.
Question 4 of 5
What is the result of adding 7 2/3 and 5 5/12?
Correct Answer: C
Rationale: To add 7 2/3 and 5 5/12, first convert both mixed numbers to improper fractions: 7 2/3 = 23/3 and 5 5/12 = 65/12. Then, add the fractions: 23/3 + 65/12 = 92/12 + 65/12 = 157/12. Finally, convert 157/12 back to a mixed number: 157 ÷ 12 = 13 with a remainder of 1, resulting in 13 1/12. Therefore, the correct answer is C (13 1/12). Choices A, B, and D are incorrect as they do not match the calculated sum of the two mixed numbers.
Question 5 of 5
The formula for calculating ideal body weight (IBW) for men is IBW (kg) = 50 + 2.3 * (height in cm - 150). If a man is 180cm tall, what is his ideal body weight?
Correct Answer: B
Rationale: To calculate the ideal body weight for a man who is 180cm tall: IBW = 50 + 2.3 * (180 - 150) = 50 + 2.3 * 30 = 50 + 69 = 119kg Therefore, the correct answer is B: 71kg. This is because the calculation results in an ideal body weight of 119kg, which corresponds to option B. The other choices (A, C, D) are incorrect as they do not match the calculated value.
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