HESI A2
HESI A2 Math
1. If Andy runs five times as long as Jake, and Jake runs 24.5 miles each week, how many miles does Andy run in a day?
- A. 17.5
- B. 17.7
- C. 16.5
- D. 18.2
Correct answer: A
Rationale: To find how many miles Andy runs in a day, we need to calculate the distance Andy runs in a week. Since Andy runs five times as long as Jake, Andy runs 5 * 24.5 = 122.5 miles per week. To convert this to miles per day, we divide by 7 (days in a week): 122.5 / 7 = 17.5 miles per day. Therefore, the correct answer is A. Choices B, C, and D are incorrect as they do not accurately reflect the calculation based on the given ratio.
2. Where would you expect tap water to fall on the pH scale?
- A. Between 1 and 3
- B. Between 4 and 6
- C. Between 6 and 8
- D. Between 8 and 10
Correct answer: C
Rationale: Tap water typically falls within the pH range of 6 to 8, making it slightly acidic to neutral. Most municipal water systems aim to provide water that is safe for consumption and falls within this pH range. A pH level of 7 is considered neutral, so tap water may vary slightly on either side of this number but typically remains within the 6 to 8 range to ensure it is safe for consumption. Choices A, B, and D are incorrect because tap water is not expected to have a pH as low as 1-3 (highly acidic) or as high as 8-10 (alkaline); it usually falls within the slightly acidic to neutral range, hence falling between 6 and 8 on the pH scale.
3. What does incorrigible mean?
- A. Curable
- B. Incurable
- C. Chronic
- D. Temporary
Correct answer: B
Rationale: The correct answer is B: 'Incurable.' Incorrigible means something or someone that cannot be corrected or cured. It signifies a persistent behavior or trait that is unlikely to change. Choices A, C, and D are incorrect because incorrigible specifically denotes something that is unable to be corrected, not curable, chronic, or temporary.
4. When a child has a stuffy nose, they might find it hard to?
- A. Breathe
- B. Breathing
- C. Breath
- D. Breadth
Correct answer: A
Rationale: The correct answer is 'A: Breathe.' When a child has a stuffy nose, the difficulty they experience is related to the action of breathing. 'Breathing' (choice B) is a gerund and doesn't fit the context of the question. 'Breath' (choice C) is a noun, not the correct verb form. 'Breadth' (choice D) refers to the extent or width of something and is unrelated to the child's difficulty due to a stuffy nose.
5. Which of the following organelles are responsible for producing cell energy?
- A. Mitochondrion and chloroplast
- B. Mitochondrion and nucleus
- C. Chloroplast and nucleus
- D. Chloroplast and lysosome
Correct answer: A
Rationale: The correct answer is A: Mitochondrion and chloroplast. Mitochondria and chloroplasts are the organelles responsible for producing cell energy through cellular respiration and photosynthesis, respectively. Choice B is incorrect because the nucleus is not involved in energy production. Choice C is incorrect as the nucleus is not an organelle that produces energy. Choice D is incorrect as lysosomes function in digesting waste materials, not in energy production.
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